* Fix WebVTT-in-MP4 output by starting the aux writer
The ISOBMFF muxer advertises WebVTT as a supported subtitle codec and maps
it to the wvtt sample entry, but IsobmffMuxer.start() never calls
auxWriter.start(). The aux writer builds subtitle sample boxes in memory, so
the first box write for any subtitle track hits its started === false assert
and muxing fails.
Start the aux writer alongside the main writer so WebVTT subtitle tracks can
be written to MP4/MOV.
* Move code around, add simple WebVTT muxing test
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Co-authored-by: hikari <[email protected]>
Co-authored-by: Vanilagy <[email protected]>
* Support QuickTime nclc color information
* Tighten QuickTime nclc color test fixture
* Make QuickTime muxer write nclc color box
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Co-authored-by: Vanilagy <[email protected]>
* fix: ensure at least one track per type is enabled for Apple ecosystem compatibility
* Add ensureOneEnabledTrack() to ISOBMFF muxer
* Add test case
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Co-authored-by: Vanilagy <[email protected]>
Sibling case to #308: when a fragmented MP4 segment begins with a sidx
box (no ftyp/styp/moof at the file root), Mp4InputFormat._canReadInput
returned false, causing Input.getTracks() to throw
UnsupportedInputFormatError.
This shape is standard in CMAF when the DASH on-demand profile is used
or when HLS playlists are derived from one (Vimeo's vod-adaptive-ak CDN,
for example). The segment is still a valid ISOBMFF fragment — the sidx
just sits before the moof.
Adds 'sidx' alongside the existing 'moof' check so the format probe
accepts these segments, and a focused regression test that fails on
the previous behaviour.
* fix: release targets from Output._targets on finalize
Long-running HLS transcodes leak memory. Every finalized BufferTarget
stays in _targets until the outer Output closes, pinning its buffer.
Writer.finalize() already does this cleanup for writer-based flows;
extend it to buffer-finalize paths via the public 'finalized' event.
* fix: ReadOrchestrator LRU eviction picks only drained workers
assert(pendingSlices.length === 0) fires under heavy concurrent reads
(e.g. multi-rendition HLS decode from BlobSource). LRU filter only
checked !running; workers with queued slices could be evicted.
Add pendingSlices.length === 0 to the filter.
* fix: export AppendOnlyStreamTarget from index
Missing from the re-export; public docs import it by name.
* fix: join HLS init segment path with root + playlist path
Init path went through _getTarget bare; segments got joined with rootPath + playlist.path. Playlist-relative URI then can't resolve when the playlist lives in a subdirectory.
* Fix targets not being cleaned up, fix paused workers with remaining pending slices, modify doc block, fixed isRoot not being changed on proxied requests
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Co-authored-by: Vanilagy <[email protected]>
Vanilagy