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Stretch or shrink audio tracks · Wiki · Moritz Bunkus ...
https://gitlab.com/mbunkus/mkvtoolnix/-/wikis/Stretch-or-shrink-audio-tracks#:~:text=Use%20mkvmerge%27s%20--sync%20option%20or%20MKVToolNix%20GUI%27s%20corresponding,or%20the%20equivalent%20movie_length%20%2F%20%28movie_length%20-%20audio_too_short%29.
Audio and video out of sync when using mkvmerge - Super User
https://superuser.com/questions/316924/audio-and-video-out-of-sync-when-using-mkvmerge
Here is a simple workflow: Find out how much out of sync it is with VLC player by using j and k buttons. Download mkvtoolnix and click on add file. Add your video file. When added, click on the audio file and now you can add your delay. Simply put, use - or + and which ever you delay worked out with vlc. Press mux now.
How to Merge MKV and Sync Video, Audio and Subtitle ...
https://www.reneelab.com/mkv-merge.html
Then the B video you want to combine with A video can not get the audio track with other language like Japanese or English subtitle. Step 1: Launch Renee Video Editor Pro and choose “ Video Toolbox ”. Step 2: Click “ Add Files ”. Click the “ T ” button on the right side and select the subtitle for MKV videos manually.
mkvmerge -- Merge multimedia streams into a Matroska file
https://mkvtoolnix.download/doc/mkvmerge.html
After a couple of minutes you can join video and audio: $ mkvmerge -o MyMovie-with-sound.mkv MyMovie.avi MyMovie.ogg. If your AVI already contains an audio track then it will be copied as well (if mkvmerge (1) supports the audio format). To avoid that simply do
audio - How to force A/V sync using mkvmerge and …
https://stackoverflow.com/questions/43359375/how-to-force-a-v-sync-using-mkvmerge-and-external-time-codes
I'm working on a project where video and audio are algorithmic interpretations of an MKV source file where I use ffmpeg -ss and -t to extract a particular region of audio and video to separate files. I use scene changes in the video in the audio process (i.e. the audio changes on video scene change), so sync is crucial.
How To Sync Your MKV Movie Using MKVToolNix - …
https://www.youtube.com/watch?v=FKGTTjhRcYo
This will show to you how to adjust or sync your mkv file (video and audio).Download MKVToolNix @ http://www.bunkus.org/videotools/mkvtoolnix/downloads.html
how to sync audio w/ mkvtoolnix? : mkvtoolnix
https://www.reddit.com/r/mkvtoolnix/comments/kzzw1k/how_to_sync_audio_w_mkvtoolnix/
Defaults: no manual sync correction (which is the same as d = 0 and o/p = 1.0). This option can be used multiple times for an input file applying to several tracks by selecting different track IDs each time. e.g. mkvmerge --identify input.mkv Track ID 0: video (MPEG-4p10/AVC/H.264) Track ID 1: audio (AAC) mkvmerge -o output.mkv -y 1:-500 input.mkv
Demuxing with MKVMerge then Remuxing with MKVToolnix ...
https://forum.videohelp.com/threads/399397-Demuxing-with-MKVMerge-then-Remuxing-with-MKVToolnix-Audio-is-out-of-sync
I've downloaded some YouTube videos as MKVs with YouTube-DL. Some are AVC and some are VP9. When I demux a VP9 video with MKVExtract then remux the video and audio files (original untouched AAC or converted to WAV) then the resulting video has VERY out of sync audio. MediaInfo doesn't report an audio delay on the source or the remux. This seems to only …
Help - Sync separate audio track with mkv file - Original ...
https://originaltrilogy.com/topic/Help-Sync-separate-audio-track-with-mkv-file/id/76289
This sounds like a very simple task but I can’t make it work. I’ve been using MKVToolNix-Gui to mux audio and video but the audio won’t sync. Audio file is a foreign track that contains the french dub of the film that I would like to include in the mkv file. Audio was extracted from an avi file (Dvdrip).
MKV Muxing Audio Out-of-Sync with Video | AfterDawn ...
https://forums.afterdawn.com/threads/mkv-muxing-audio-out-of-sync-with-video.647487/
Using a program called "mkvmerge GUI," I was able to do this. But, the audio is out-of-sync (perhaps progressively) with the video. Now, the audio seems to start off fine at the very beginning, so I don't think it's an audio delay issue.
Stretch or shrink audio tracks · Wiki · Moritz Bunkus ...
https://gitlab.com/mbunkus/mkvtoolnix/-/wikis/Stretch-or-shrink-audio-tracks
Use mkvmerge's --sync option or MKVToolNix GUI's corresponding controls delay and stretch by. For example, if your movie is 2h long and your audio track with the track ID 1 is too short by 30s, you can stretch it by the factor movie_length / audio_length or the equivalent movie_length / (movie_length - audio_too_short).
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