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replay temp files instead of building from the rolling buffer

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legop3
2026-07-11 12:16:47 -04:00
parent 10a586e5d0
commit e02b7a2eb7
1 changed files with 37 additions and 2 deletions
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server/src/services/replayEngineV2/replayBuilder.js
+37 -2
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@@ -75,6 +75,33 @@ function createReplayBuilder({ execFileAsync, fsp, ensureDir, renderSidebarVideo
await execFileAsync(FFMPEG_BIN, ['-y','-hide_banner','-loglevel','error','-f','concat','-safe','0','-i',listPath,'-c','copy',outPath]);
}
async function pinSegmentFiles(entries, tmpDir, prefix) {
/*
Replay segment files live in a rolling buffer, so cleanup can unlink one
while a slower replay build is still working. Pinning selected files into
the per-build temp directory gives ffmpeg stable paths for the whole build.
A hard link is preferred because it is cheap and keeps the inode alive even
when cleanup removes the original directory entry; copyFile is the fallback
for filesystems that do not support linking across the involved paths.
*/
const pinned = [];
for (let i = 0; i < entries.length; i += 1) {
const entry = entries[i];
const pinnedPath = path.join(tmpDir, `${prefix}-${String(i).padStart(4, '0')}.mp4`);
try {
await fsp.link(entry.filePath, pinnedPath);
} catch (linkErr) {
try {
await fsp.copyFile(entry.filePath, pinnedPath);
} catch (copyErr) {
continue;
}
}
pinned.push({ ...entry, filePath: pinnedPath });
}
return pinned;
}
async function probeMaxFrameSize(paths) {
let maxWidth = 0, maxHeight = 0;
for (const filePath of paths) {
@@ -108,7 +135,11 @@ function createReplayBuilder({ execFileAsync, fsp, ensureDir, renderSidebarVideo
for (let i = 0; i < sources.length; i += 1) {
const source = sources[i];
const sourceId = String(source.id);
const videoEntries = overlapping(getVideoEntriesForSource({ type: String(source.type), id: sourceId }), tStart, tEnd);
const videoEntries = await pinSegmentFiles(
overlapping(getVideoEntriesForSource({ type: String(source.type), id: sourceId }), tStart, tEnd),
tmpDir,
`video-${i}-seg`,
);
if (!videoEntries.length) { missingSources.push({ ...source, reason: 'no video coverage in replay window' }); continue; }
const videoConcat = path.join(tmpDir, `video-${i}.mp4`);
@@ -122,7 +153,11 @@ function createReplayBuilder({ execFileAsync, fsp, ensureDir, renderSidebarVideo
normalizedVideos.push({ path: videoTrimmed, source });
usedSources.push(source);
const audioEntries = overlapping(getAudioEntriesForSource(source), tStart, tEnd);
const audioEntries = await pinSegmentFiles(
overlapping(getAudioEntriesForSource(source), tStart, tEnd),
tmpDir,
`audio-${i}-seg`,
);
if (audioEntries.length) {
/*
Audio workers are separate from selected video sources, even for PTZ