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feat(manifests): extend merge_segments rolling merge to HLS and ISM

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RollingMerge takes the segment path and an append hook. ISM synthesises the init from segment 0 and converts PIFF per fragment; HLS qualifies only with one init, one key and no discontinuity. Both parsers check the merge reached every segment, and resume is decided per track.
This commit is contained in:
imSp4rky
2026-09-21 20:53:37 -06:00
parent 79d109d548
commit 6e681af513
8 changed files with 477 additions and 86 deletions
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docs/reference/configuration/download.md
+5 -3
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@@ -135,7 +135,7 @@ continue_downloads: true
- **Type:** `bool`  ·  **Default:** `false`
Appends each DASH segment to the output file as soon as it and every segment before it have
Appends each segment to the output file as soon as it and every segment before it have
arrived, instead of joining all the segment files after the last one lands. The join runs
during the download, so the "Merging" step after the last segment goes away. The output file
is the same either way.
@@ -151,8 +151,10 @@ the read usually comes from the page cache. On a hard disk, the append to one fi
workers write many segment files can still make the head seek. If a download gets slower with
the option on, turn it off.
This applies to DASH video and audio tracks only. Subtitle tracks, HLS tracks and ISM
tracks keep the merge after the download.
This applies to video and audio tracks from DASH, ISM, and HLS. An HLS track qualifies
only when every segment shares one init segment and one `EXT-X-KEY`, with no
`EXT-X-DISCONTINUITY`, and the DRM is Widevine, PlayReady, or none. AES-128 tracks, tracks
with content key rotation or discontinuities, and subtitle tracks keep the merge after the download.
!!! note "No resume"