Questions tagged [mkv]

The Matroska Multimedia container is a free and open media file format. It is also a container format which means it can contain all sorts of audio, video, textual and graphical file information inside of it. You can have multiple number of audio, video, textual and graphical streams co-existing in the same file without an issue. It uses something called an Extensible Binary Meta Language which is supposed to be equivalent to XML.

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Extract file thumbnail from mp4 file

I'm currently converting a few mp4 file to mkv. In the process they lose their file thumbnails and I wanted to keep them. So I'm searching for a way to extract the custom thumbnails from the mp4 files ...
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574 views

Is it feasible to create a true multi-language video file with visual localization?

I'm of Russian descent, but I've been living in Germany for the better part of my life now, which means that I deal with both German and Russian media on a regular basis. Most video stuff I have will ...
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What's wrong with VLC seeking and/or MKV created by ffmpeg?

I have creeated a video using FFmpeg. It is a result of putting 4 videos together, tiled, using -filter_complex with overlays. Following the how-to here, I have it created as MKV. When playing this ...
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266 views

Burn .mkv to a .dvd for playback on DVD player while retaining multiple tracks?

If I use a program like ASVtoDVD or ConvertXToDVD to convert a .mkv to a .dvd, and the .mkv has multiple audio tracks/subtitle, will the produced .dvd only have one of those, or will it retain more or ...
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How can I merge five mkv files I've created in OBS Studio?

I used OBS Studio to create five recordings. Now I need to submit them as just one file on YouTube, so my five .mkv files has to be merged into just one file. Can it be done in OBS Studio, if so ...
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5 views

How do I view the contents of a subtitle track as well as change its language meta data in a MKV?

I have a bunch of MKVs with several subtitle tracks in each. Most of these subtitles tracks either have no language designation at all or the wrong, random, language settings, making everything very ...
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25 views

No sound on Windows Media Player after removing unneeded audio streams with ffmpeg

In some .mkv files with multiple different audio streams I removed all the ones I don't need with ffmpeg and only kept the desired audio stream along with the video and possibly subtitles. The result ...
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19 views

How do i view the size of a stream (audio or video) in a mkv file?

I've been playing around with transcoding my movies to x265 lately, but i haven't found a way to view which size the video stream has compared to the audio stream. I want to make some tests how ...
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47 views

checking errors in video files with FFMPEG

I have a collection of movies in mkv format which i keep in an external harddisk.Sometimes I loan the harddisk to my friends.One day my friend told me,he couldn't play an entire movie,it was crashing ...
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help trying to sync audio to a video

am trying to add the audio file that was extracted with Pazera Free Audio Extractor from the mkv files of source #1 to a video source #2 but i cant get it to sync. does anybody here know how to fix ...
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38 views

Discarding potentially broken or useless index. How to fix it?

I have a video/media file which while under mpv or vlc gives the above error. It plays the video but very slowly. Is there a way to correct the error. This is what mediainfo says about the file - ...
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1answer
136 views

How to convert part of mkv file to mp4 for premiere pro?

I tried changing the extension name of a mkv file to avi before importing but it doesn't work. I can use VLC to convert the entire video to mp4 but it would take 3-4 hours (it's 7GB). Is it possible ...
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Mjpeg in video containers use case

From time to time i'm converting mkv to mp4 using ffmpeg in order to save disk space. Currently i noticed that in some files multiple mjpeg streams where also included. Some of them were named cover....
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Reencode MKV (from DVD - Mpeg2) to h264

I have some old DVD that I already converted using MakeMKV, they seems to have the original mpeg stream, so I want to do this: Reencode the video stream to the more recommended settings for old-DVD ...
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1answer
385 views

How to make ffmpeg to generate NUMBER_OF_BYTES tag for every stream in file output?

Can ffmpeg count size of stream in bytes? I want to write NUMBER_OF_BYTES tag for every stream in file output on the fly. Like MKVToolNix does. Input #0, matroska,webm, from 'm:\S01E18.mkv': ...
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252 views

MKVToolNix Splitting and Joining Stutter

I've been trying to split a tv show episode into two seperate parts, but whenever I try to rejoin the split files, I get a pixelation look on the merge locations. I've been using MKVToolNix to try ...
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How to combine two audio tracks into one from MKV container file

I record MKV files using OBS Studio (Open Broadcaster). I record the mic on a separate track from the desktop audio, so that I can record game footage that doesn't include voice in it and also have ...