Mkv Index ^new^ Jun 2026

: Tools like Everything or Synology Media Server can index the tags (Director, Actors) inside your MKV for easier searching.

| Sub-element | Description | Data Type | |-------------|-------------|------------| | CueTime | Timestamp (in nanoseconds) of the seek target. | Unsigned integer | | CueTrackPositions | One or more positions for different tracks at the same timestamp. | Container | | - CueTrack | Track number (e.g., video track 1). | Unsigned integer | | - CueClusterPosition | Absolute byte offset of the Cluster containing this keyframe, relative to the Segment start. | Unsigned integer | | - CueBlockNumber | (Optional) Specific block inside the cluster (default 1). | Unsigned integer | | - CueCodecState | (Optional) Position of the Codec Private data (e.g., SPS/PPS). | Unsigned integer | mkv index

This is the proper fix. Remuxing rewrites the file structure and generates a fresh index. Using ffmpeg: : Tools like Everything or Synology Media Server

The default "one size fits all" index isn’t always optimal. Depending on your goal, you should adjust cue density. | Container | | - CueTrack | Track number (e

New tools like av1an (for AV1 encoding) now include --mkvmerge-cues flags to ensure dense indexing specifically for these complex codecs.