Without a proper index, you cannot "seek" (jump to a specific time) in a video player.
This is the proper fix. Remuxing rewrites the file structure and generates a fresh index. Using ffmpeg:
The popular ffmpeg tool offers a reserve_index_space option to place the index at the beginning of the file. A safe space allocation is about if you choose this method. mkv index
This is the official name for the MKV index. It consists of a list of specific timestamps paired with the exact byte position of the Cluster containing that keyframe.
When a player seeks to 5.2 seconds, it:
By default, MKV muxers write the index (Cues) at the . If the index is missing or located at the end of an incomplete download, the player cannot map the timeline. Consequently, the MKV index missing results in the player struggling to read the file, causing the seek bar to be unresponsive.
You have two main options:
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
| 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 | Without a proper index, you cannot "seek" (jump