| Index Type | CuePoints per minute | File size overhead | Seek accuracy | Use case | |------------|----------------------|--------------------|---------------|-----------| | (every keyframe) | 60–300 | ~2–5% | Frame-accurate | Editing, scrubbing | | Sparse (every 2-10s) | 6–30 | ~0.5–1% | Near video | Streaming, general playback | | None | 0 | 0% | Only linear scan | Archival, sequential playback |
# Using MKVToolNix (preserves all tracks) mkvmerge -o output.mkv --cues 0:all input.mkv
: Select a track (video, audio, or subtitle) and change its "Track name" or "Language" in the Properties pane on the right. Add Chapters : Go to the tab to define split points or use the Chapter Editor file containing timecodes. Start Muxing
These servers often generate their own indexes (BIF files) for thumbnails. However, an internal MKV index speeds up initial analysis. Use moderate cues (every 2 seconds) to balance seek speed and metadata overhead. mkv index
Good news: You can regenerate or repair the MKV index without re-encoding the video (lossless operation). The video and audio streams remain untouched.
Files can suffer from "broken or missing index" errors due to interrupted downloads, software crashes during recording (like OBS), or poor muxing. Symptoms include:
In the Matroska specification, the index is officially called the element. Understanding how the MKV index works is crucial for video editors, streaming developers, and anyone dealing with corrupted files or massive 4K/8K video renders. | Index Type | CuePoints per minute |
Do you prefer a or a command-line tool for fixing files?
Dedicated, self-hosted media setups using platforms like Plex or Jellyfin are a popular way to stream your own legally acquired MKV collections across all your devices.
: The video takes several seconds to resume after you skip ahead. However, an internal MKV index speeds up initial analysis
The Matroska container organizes data into nested structures called Elements. The MKV index relies primarily on two specific elements located at the structural level of the file:
|+ Seek head |+ Cues | + Cue point | | + Cue time: 100.000ms | | + Cue track positions
When put together, a search query often looks like this: intitle:"index.of" (mkv|mp4) -inurl:(html|htm|php)