feat(gateway): split video recording into silence-based segments like voice
Video (camera + screen share) DAVE stream-watch now produces per-burst MP4 segments instead of one long .h264 per watch: - Detects VIDEO_SILENCE_MS (4000ms) of no H264 packets → closes the current segment, muxes to MP4, registers in voice_recordings + uploads to TeleUploader, then reopens for the next burst (mirrors voice AfterSilence). - Per-watch segment counter + per-segment depacketizer reset + closing guard + write-error swallow so races (silence close vs in-flight UDP packet) never corrupt files or crash the gateway. - Frontend: recordings deck renders a native <video> player for MP4 rows (detected by filename), keeps single-playback registry across audio+video.
This commit is contained in:
asepharyana
asepharyana
@@ -0,0 +1,33 @@
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# Video Recording Splitting — Like Voice Recording
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## Goal
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Camera + screen share (stream watch) recording should split into per-burst
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segments just like voice recording does — each time a streamer pauses/stops
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and resumes, a new MP4 segment is created and registered in the DB + uploaded.
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## Voice Recording Model (to replicate)
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1. `receiver.speaking.start` → new OGG segment per burst
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2. AfterSilence (4000ms) → stream "end" → segment finalized + uploaded
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3. Each segment → DB insert → OGG→MP3 transcode → upload → update DB
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4. File stored as `<userId>/<startTime>.ogg` + `.json`
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## Video Recording Splitting
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1. DAVE video RTP → depacketize H264 → write to current segment .h264
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2. Silence detection: no H264 packets for 4000ms → close segment → flush →
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mux to MP4 → insert DB record → upload → start new segment on next packet
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3. Each segment: `<userId>/video-<channelId>-<startTime>.h264` → `.mp4`
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4. DB: reuse `voice_recordings` table (filename indicates video, e.g. `video-XXX-1234.mp4`)
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5. Upload: MP4 to TeleUploader (no transcode needed — MP4 plays everywhere)
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## Files Modified
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- `services/discord-gateway/src/modules/voice-recording/streamWatchReceiver.ts`
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— Main change: silence-based splitting + DB registration + upload
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## Constants
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- `VIDEO_SILENCE_MS = 4000` (matches voice AfterSilence)
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- `VIDEO_MIN_SEGMENT_MS = 1000` (skip segments <1s — avoid noise)
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## Verification
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- `pnpm typecheck` in `services/discord-gateway`
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- `pnpm build` (dist/ is the deployed artifact)
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- Push → CI deploy → live test with a streamer
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@@ -29,6 +29,7 @@ import {
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promises as fsPromises,
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type WriteStream,
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} from "node:fs";
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import { stat } from "node:fs/promises";
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import path from "node:path";
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import {
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getVoiceConnection,
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@@ -50,6 +51,19 @@ const HEADER_EXTENSION_BYTE = Buffer.from([190, 222]); // 0xBE 0xDE
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/** Opus RTP payload type (120). Video arrives on non-opus payload types. */
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const RTP_OPUS_PAYLOAD_TYPE = 120;
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/**
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* Video silence threshold — matches voice recording AfterSilence (4000ms).
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* When no H264 video RTP packets arrive for this long, the current segment
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* is closed and muxed to MP4 (like voice's "end of burst"). A new segment
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* opens when packets resume.
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*/
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const VIDEO_SILENCE_MS = 4000;
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/**
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* Minimum segment duration — skip registering segments shorter than this
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* (avoids creating tiny MP4 files from brief camera flashes).
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*/
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const VIDEO_MIN_SEGMENT_MS = 1000;
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/** A watched user's live DAVE stream connection + file state. */
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interface WatchState {
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uid: string;
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@@ -62,6 +76,12 @@ interface WatchState {
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bytesWritten: number;
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lastPacketAt: number;
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startedAt: number;
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/** Timestamp of the current segment's first packet (for silence detection). */
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segmentStartAt: number;
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/** Per-watch segment counter — makes each segment's filename unique. */
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segmentSeq: number;
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/** True while a segment close is in-flight (rejects new packet writes). */
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closing: boolean;
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_diag?: { video: number; maxLen: number; pts: Set<number> };
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_diagNext?: number;
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}
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@@ -77,6 +97,37 @@ export function setStreamWatchRecordingsDir(dir: string): void {
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_recordingsDir = dir;
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}
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/**
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* Silence detection interval — runs every 2s and checks each active watch for
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* VIDEO_SILENCE_MS of inactivity (no H264 packets). On silence, the current
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* segment is closed, muxed to MP4, registered in the DB, and uploaded.
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* Matches voice recording's AfterSilence behavior.
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*/
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const _silenceInterval = setInterval(() => {
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const now = Date.now();
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for (const [watchKey, watch] of watches) {
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if (!watch.out || !watch.segmentStartAt) continue;
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const silenceDuration = now - watch.lastPacketAt;
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if (silenceDuration < VIDEO_SILENCE_MS) continue;
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const segmentDuration = now - watch.segmentStartAt;
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logger.info(
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{
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userId: watch.uid,
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watchKey,
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segmentDurationMs: segmentDuration,
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bytes: watch.bytesWritten,
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},
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`Video silence detected (${silenceDuration}ms) — closing segment`,
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);
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// Fire-and-forget: close + finalize the segment.
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void closeCurrentSegment(watch, watchKey);
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}
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}, 2_000);
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// Prevent the interval from keeping the process alive.
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if (_silenceInterval.unref) _silenceInterval.unref();
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/** Test-only reset. */
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export function __resetStreamWatchState(): void {
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for (const [, w] of watches) closeWatch(w);
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@@ -330,6 +381,9 @@ function connectWatch(
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bytesWritten: 0,
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lastPacketAt: Date.now(),
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startedAt: Date.now(),
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segmentStartAt: 0,
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segmentSeq: 0,
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closing: false,
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});
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}
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@@ -530,6 +584,8 @@ function handleUdpMessage(
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void openOutput(watchKey, watch, decrypted);
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return;
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}
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// Reject writes while a segment close is in-flight (silence detected).
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if (watch.closing) return;
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watch.lastPacketAt = Date.now();
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let nals: Buffer[];
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try {
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@@ -553,18 +609,203 @@ async function openOutput(
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if (watch.out) return;
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const dir = path.join(_recordingsDir, watch.uid);
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await fsPromises.mkdir(dir, { recursive: true });
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// Filename includes the per-watch segment counter so a new segment after
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// silence never collides with the (possibly still in-flight) previous one.
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const seq = watch.segmentSeq++;
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const filePath = path.join(
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dir,
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`video-${watch.channelId}-${watch.startedAt}.h264`,
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`video-${watch.channelId}-${watch.startedAt}-${seq}.h264`,
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);
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watch.filePath = filePath;
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watch.out = createWriteStream(filePath);
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// Swallow EPIPE / ERR_STREAM_WRITE_AFTER_END on the segment file when a
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// close races an in-flight UDP write — an unhandled stream 'error' here
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// would crash the gateway (same class as the media EPIPE incidents).
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watch.out.on("error", () => {});
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watch.segmentStartAt = Date.now();
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logger.info(
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{ userId: watch.uid, path: filePath },
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"Video burst opened (DAVE video RTP received)",
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"Video segment opened (DAVE video RTP received)",
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);
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}
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/**
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* Close the current segment's write stream, mux the H264 to MP4, and
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* register the recording in the DB + upload. After this, the watch is
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* ready for a new segment (silence ended → packets resume).
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* Mirrors voice recording's finalizeSegment + uploadRecordingSegment flow.
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*/
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async function closeCurrentSegment(
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watch: WatchState,
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watchKey: string,
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): Promise<void> {
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if (!watch.out || watch.out.destroyed || watch.closing) return;
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// Mark closing FIRST (synchronously) so the UDP handler stops writing.
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watch.closing = true;
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const filePath = watch.filePath;
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const segmentStart = watch.segmentStartAt;
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const bytes = watch.bytesWritten;
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// Flush the write stream to disk.
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const flushed = new Promise<void>((resolve) => {
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if (!watch.out || watch.out.destroyed) {
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resolve();
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return;
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}
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watch.out.once("finish", () => resolve());
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watch.out.end();
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});
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await flushed;
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// Reset watch state for the next segment.
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watch.out = undefined as unknown as WriteStream;
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watch.filePath = "";
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watch.bytesWritten = 0;
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watch.segmentStartAt = 0;
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watch.closing = false;
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// Reset the depacketizer so a partial FU-A fragment from this segment
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// doesn't bleed into the next segment (it only writes complete NALs).
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watch.depacketizer.reset();
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if (!filePath) return;
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// Discard very short segments (<1s) — avoids creating tiny MP4 files.
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const durationMs = Date.now() - segmentStart;
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if (durationMs < VIDEO_MIN_SEGMENT_MS) {
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logger.debug(
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{ userId: watch.uid, durationMs },
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"Video segment too short, discarding",
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);
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fsPromises.unlink(filePath).catch(() => {});
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return;
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}
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// Mux H264 to MP4 and register in DB + upload.
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try {
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const mp4 = await muxToMp4(filePath);
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await finalizeVideoSegment({
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mp4Path: mp4,
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userId: watch.uid,
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guildId: watch.guildId,
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channelId: watch.channelId,
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startTime: segmentStart,
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durationMs,
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bytes,
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});
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logger.info(
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{ userId: watch.uid, mp4, durationMs, bytes },
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"Video segment finalized + uploaded",
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);
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} catch (err) {
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logger.warn(
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{
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userId: watch.uid,
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err: err instanceof Error ? err.message : String(err),
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},
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"Video segment finalize failed (raw .h264 kept)",
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);
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}
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}
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/**
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* Register a completed video MP4 segment in the DB and upload it.
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* Reuses the voice_recordings table (filename indicates video).
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*/
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async function finalizeVideoSegment(input: {
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mp4Path: string;
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userId: string;
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guildId: string;
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channelId: string;
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startTime: number;
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durationMs: number;
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bytes: number;
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}): Promise<void> {
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const { mp4Path, userId, guildId, channelId, startTime, durationMs, bytes } =
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input;
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const segmentId = `video-${userId}-${startTime}`;
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const fileName = path.basename(mp4Path);
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try {
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// Get file size and register in DB.
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const fileStats = await stat(mp4Path);
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const { insertVoiceRecording } = await import(
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"../../shared/database/voiceRecordingRepo.js"
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);
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await insertVoiceRecording({
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id: segmentId,
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user_id: userId,
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username: userId, // Will be enriched by frontend from user_profiles
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avatar_url: null,
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guild_id: guildId,
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channel_id: channelId,
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channel_name: null,
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filename: fileName,
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size_bytes: fileStats.size,
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upload_status: "pending",
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created_at: Date.now(),
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});
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// Upload MP4 to TeleUploader.
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const { uploadToTele } = await import("../../shared/uploader.js");
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const { config } = await import("../../shared/config/config.js");
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const fileBuffer = await fsPromises.readFile(mp4Path);
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const uploadResult = await uploadToTele({
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buffer: fileBuffer,
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filename: fileName,
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contentType: "video/mp4",
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uploadUrl: config.TELE_UPLOAD_URL,
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retries: 3,
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});
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// Update DB with upload URL.
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const { updateVoiceRecordingAsUploaded } = await import(
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"../../shared/database/voiceRecordingRepo.js"
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);
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await updateVoiceRecordingAsUploaded(
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segmentId,
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uploadResult.url,
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Date.now(),
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);
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logger.info(
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{ segmentId, url: uploadResult.url, durationMs, bytes },
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"Video segment uploaded successfully",
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);
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// Broadcast via EventBroadcaster.
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const { _eventBroadcaster } = await import("./recorder.js");
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if (_eventBroadcaster) {
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_eventBroadcaster
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.voiceRecordingUploaded({
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id: segmentId,
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user_id: userId,
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username: userId,
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avatar_url: null,
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guild_id: guildId,
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channel_id: channelId,
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channel_name: null,
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filename: fileName,
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size_bytes: fileStats.size,
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download_url: uploadResult.url,
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upload_status: "uploaded",
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created_at: Date.now(),
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uploaded_at: Date.now(),
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})
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.catch(() => {});
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}
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} catch (err) {
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const errorMsg = err instanceof Error ? err.message : String(err);
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logger.error(
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{ segmentId, error: errorMsg },
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"Failed to upload video segment",
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);
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// Mark as failed in DB (best-effort).
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const { updateVoiceRecordingAsFailed } = await import(
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"../../shared/database/voiceRecordingRepo.js"
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);
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await updateVoiceRecordingAsFailed(segmentId, errorMsg).catch(() => {});
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}
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}
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function closeWatch(watch: WatchState): void {
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if (!watch) return;
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try {
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@@ -572,28 +813,9 @@ function closeWatch(watch: WatchState): void {
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} catch {
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/* ignore */
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}
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// Finalize any open segment (mux to MP4 + DB + upload).
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if (watch.out && !watch.out.destroyed) {
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const flushed = new Promise<void>((resolve) => {
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watch.out.once("finish", () => resolve());
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watch.out.end();
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});
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void flushed
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.then(() => muxToMp4(watch.filePath))
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.then((mp4) =>
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logger.info(
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{ userId: watch.uid, mp4, bytes: watch.bytesWritten },
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"Video muxed to mp4",
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),
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)
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.catch((err) =>
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logger.warn(
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{
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userId: watch.uid,
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err: err instanceof Error ? err.message : String(err),
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},
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"Video mux failed (raw .h264 kept)",
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),
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);
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void closeCurrentSegment(watch, `${watch.guildId}:${watch.uid}`);
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}
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}
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@@ -55,6 +55,7 @@ import type {
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SpeakerSummary,
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VoiceRecording,
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} from "@/lib/types";
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import { isVideoRecording } from "@/lib/types/recording";
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import { useWebSocket } from "@/lib/ws/context";
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const ALL = "__all__";
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@@ -557,7 +558,10 @@ export function RecordingsView({
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{r.download_url ? (
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<RecordingAudioPlayer
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src={r.download_url}
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label={`Voice recording by ${r.username}`}
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label={`${
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isVideoRecording(r) ? "Video" : "Voice"
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} recording by ${r.username}`}
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video={isVideoRecording(r)}
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onPlayStateChange={(active) =>
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setPlayingId((prev) => {
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if (active) return r.id;
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@@ -21,9 +21,45 @@ function formatTime(sec: number): string {
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return `${m}:${s.toString().padStart(2, "0")}`;
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}
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/** Shared event wiring for a video element (kept small to avoid dup logic). */
|
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function wireVideoEvents(
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el: HTMLVideoElement,
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onLoadedMeta: () => void,
|
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onTime: () => void,
|
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onEnd: () => void,
|
||||
onPause: () => void,
|
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onPlaying: () => void,
|
||||
): void {
|
||||
el.addEventListener("loadedmetadata", onLoadedMeta);
|
||||
el.addEventListener("durationchange", onLoadedMeta);
|
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el.addEventListener("timeupdate", onTime);
|
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el.addEventListener("ended", onEnd);
|
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el.addEventListener("pause", onPause);
|
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el.addEventListener("playing", onPlaying);
|
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}
|
||||
|
||||
/** Remove the listeners added by {@link wireVideoEvents}. */
|
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function unwireVideoEvents(
|
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el: HTMLVideoElement,
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onLoadedMeta: () => void,
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onTime: () => void,
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onEnd: () => void,
|
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onPause: () => void,
|
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onPlaying: () => void,
|
||||
): void {
|
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el.removeEventListener("loadedmetadata", onLoadedMeta);
|
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el.removeEventListener("durationchange", onLoadedMeta);
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||||
el.removeEventListener("timeupdate", onTime);
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el.removeEventListener("ended", onEnd);
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el.removeEventListener("pause", onPause);
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||||
el.removeEventListener("playing", onPlaying);
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||||
}
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||||
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interface Props {
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src: string;
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||||
label?: string;
|
||||
/** True when the recording is video (camera/screen-share MP4). */
|
||||
video?: boolean;
|
||||
/** Lifted state: parent highlights the card that owns the active player. */
|
||||
onPlayStateChange?: (playing: boolean) => void;
|
||||
className?: string;
|
||||
@@ -34,20 +70,28 @@ interface Props {
|
||||
* play/pause with buffering spinner, click-to-seek progress bar, time label,
|
||||
* animated equalizer bars while playing, and single-playback enforcement
|
||||
* (starting one clip pauses all others).
|
||||
*
|
||||
* For `video` recordings it renders a native `<video controls>` instead —
|
||||
* video needs the browser's own scrubbing/fullscreen UI — but still honors
|
||||
* the single-playback registry and lifts play state to the parent card.
|
||||
*/
|
||||
export function RecordingAudioPlayer({
|
||||
src,
|
||||
label = "Voice recording",
|
||||
video = false,
|
||||
onPlayStateChange,
|
||||
className,
|
||||
}: Props) {
|
||||
const videoRef = useRef<HTMLVideoElement | null>(null);
|
||||
const audioRef = useRef<HTMLAudioElement | null>(null);
|
||||
const [playing, setPlaying] = useState(false);
|
||||
const [buffering, setBuffering] = useState(false);
|
||||
const [current, setCurrent] = useState(0);
|
||||
const [duration, setDuration] = useState(0);
|
||||
|
||||
// Audio: hide an HTMLAudioElement and drive it with the custom scrubber.
|
||||
useEffect(() => {
|
||||
if (video) return;
|
||||
const audio = new Audio();
|
||||
audio.preload = "metadata";
|
||||
audio.src = src;
|
||||
@@ -107,37 +151,100 @@ export function RecordingAudioPlayer({
|
||||
audio.src = "";
|
||||
audioRef.current = null;
|
||||
};
|
||||
}, [src]);
|
||||
}, [src, video]);
|
||||
|
||||
// Video: wire the rendered <video controls> for single-playback + lifted state.
|
||||
useEffect(() => {
|
||||
if (!video) return;
|
||||
const el = videoRef.current;
|
||||
if (!el) return;
|
||||
|
||||
const onLoadedMeta = () => setDuration(el.duration || 0);
|
||||
const onTime = () => setCurrent(el.currentTime);
|
||||
const onEnd = () => {
|
||||
setPlaying(false);
|
||||
setCurrent(0);
|
||||
};
|
||||
const onPause = () => setPlaying(false);
|
||||
const onPlaying = () => setPlaying(true);
|
||||
wireVideoEvents(el, onLoadedMeta, onTime, onEnd, onPause, onPlaying);
|
||||
|
||||
// Single playback: pausing any other video/audio that starts.
|
||||
const pauseThis = () => el.pause();
|
||||
let unregister: (() => void) | null = null;
|
||||
const onPlayEvt = () => {
|
||||
for (const other of activePlayers) {
|
||||
if (other !== pauseThis) other();
|
||||
}
|
||||
unregister?.();
|
||||
unregister = registerPlayer(pauseThis);
|
||||
};
|
||||
el.addEventListener("play", onPlayEvt);
|
||||
|
||||
return () => {
|
||||
unregister?.();
|
||||
unwireVideoEvents(el, onLoadedMeta, onTime, onEnd, onPause, onPlaying);
|
||||
el.removeEventListener("play", onPlayEvt);
|
||||
};
|
||||
}, [video]);
|
||||
|
||||
useEffect(() => {
|
||||
onPlayStateChange?.(playing || buffering);
|
||||
}, [playing, buffering, onPlayStateChange]);
|
||||
|
||||
const toggle = useCallback(() => {
|
||||
const audio = audioRef.current;
|
||||
if (!audio) return;
|
||||
if (audio.paused) {
|
||||
const el = video ? videoRef.current : audioRef.current;
|
||||
if (!el) return;
|
||||
if (el.paused) {
|
||||
setBuffering(true);
|
||||
void audio.play().catch(() => setBuffering(false));
|
||||
void el.play().catch(() => setBuffering(false));
|
||||
} else {
|
||||
audio.pause();
|
||||
el.pause();
|
||||
}
|
||||
}, []);
|
||||
}, [video]);
|
||||
|
||||
const seek = useCallback((e: React.MouseEvent<HTMLDivElement>) => {
|
||||
const audio = audioRef.current;
|
||||
if (!audio || !Number.isFinite(audio.duration)) return;
|
||||
const rect = e.currentTarget.getBoundingClientRect();
|
||||
const ratio = Math.min(
|
||||
1,
|
||||
Math.max(0, (e.clientX - rect.left) / rect.width),
|
||||
);
|
||||
audio.currentTime = ratio * audio.duration;
|
||||
setCurrent(audio.currentTime);
|
||||
}, []);
|
||||
const seek = useCallback(
|
||||
(e: React.MouseEvent<HTMLDivElement>) => {
|
||||
const el = video ? videoRef.current : audioRef.current;
|
||||
if (!el || !Number.isFinite(el.duration)) return;
|
||||
const rect = e.currentTarget.getBoundingClientRect();
|
||||
const ratio = Math.min(
|
||||
1,
|
||||
Math.max(0, (e.clientX - rect.left) / rect.width),
|
||||
);
|
||||
el.currentTime = ratio * el.duration;
|
||||
setCurrent(el.currentTime);
|
||||
},
|
||||
[video],
|
||||
);
|
||||
|
||||
const pct = duration > 0 ? (current / duration) * 100 : 0;
|
||||
|
||||
if (video) {
|
||||
return (
|
||||
<div
|
||||
className={cn(
|
||||
"rounded-[8px] border bg-surface-2 p-1.5 transition-colors",
|
||||
playing
|
||||
? "border-signal/40 shadow-[0_0_24px_-10px_var(--color-signal-glow)]"
|
||||
: "border-hairline",
|
||||
className,
|
||||
)}
|
||||
role="group"
|
||||
aria-label={label}
|
||||
>
|
||||
<video
|
||||
ref={videoRef}
|
||||
src={src}
|
||||
controls
|
||||
playsInline
|
||||
preload="metadata"
|
||||
className="aspect-video w-full rounded-[5px] bg-black object-contain"
|
||||
/>
|
||||
</div>
|
||||
);
|
||||
}
|
||||
|
||||
return (
|
||||
<div
|
||||
className={cn(
|
||||
@@ -183,15 +290,12 @@ export function RecordingAudioPlayer({
|
||||
tabIndex={0}
|
||||
onClick={seek}
|
||||
onKeyDown={(e) => {
|
||||
const audio = audioRef.current;
|
||||
if (!audio || !Number.isFinite(audio.duration)) return;
|
||||
const el = video ? videoRef.current : audioRef.current;
|
||||
if (!el || !Number.isFinite(el.duration)) return;
|
||||
if (e.key === "ArrowRight")
|
||||
audio.currentTime = Math.min(
|
||||
audio.duration,
|
||||
audio.currentTime + 5,
|
||||
);
|
||||
el.currentTime = Math.min(el.duration, el.currentTime + 5);
|
||||
if (e.key === "ArrowLeft")
|
||||
audio.currentTime = Math.max(0, audio.currentTime - 5);
|
||||
el.currentTime = Math.max(0, el.currentTime - 5);
|
||||
}}
|
||||
className="group relative h-4 cursor-pointer"
|
||||
>
|
||||
|
||||
@@ -16,6 +16,11 @@ export interface VoiceRecording {
|
||||
transcription?: string | null;
|
||||
}
|
||||
|
||||
/** True when the recording file is video (camera/screen-share MP4). */
|
||||
export function isVideoRecording(r: Pick<VoiceRecording, "filename">): boolean {
|
||||
return /\.(mp4|webm|mov|h264)$/i.test(r.filename);
|
||||
}
|
||||
|
||||
export interface PaginatedRecordings {
|
||||
items: VoiceRecording[];
|
||||
nextCursor: string | null;
|
||||
|
||||
Reference in New Issue
Block a user