Mkv Index Access

| Container | Index mechanism | Index location | Mandatory? | |------------|----------------|----------------|-------------| | | Cues (separate element) | Within Segment, usually near end | No, but recommended | | MP4/MOV | stco / co64 (chunk offset table) + stts (time-to-sample) | Within moov atom | Yes, for reliable seeking | | AVI | idx1 chunk | At end of file (or rec list) | No (AVI v1.0), Yes (OpenDML) | | WebM | Same as MKV Cues | Within Segment | Required for WebM compliance |

mkvmerge --clusters-in-meta-seek -o web_stream.mkv source.mkv mkv index

MP4Box -add input.mkv -new output.mp4 -hint | Container | Index mechanism | Index location | Mandatory

: To pull a specific subtitle or audio track out of an MKV file using its index number: mkvextract tracks "video.mkv" 2:"subtitle.srt" (where 2 is the track index). usually near end | No

If an MKV has no index or a corrupted index: