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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
Audio is 48khz, using 512 sample blocks. Video is 23.976fps (I also tried 24). I store the frame onset of sceneChanges in a file in terms of cumulative blocks: blocksPerFrame = (48000 / 512) / 23.976 sceneOnsetBlock = …
mkvmerge: Merge multimedia streams into a …
https://www.systutorials.com/docs/linux/man/1-mkvmerge/
Normally mkvmerge (1) will use a value of 1000000 which means that timecodes and durations will have a precision of 1ms. For files that will not contain a video track but at least one audio track mkvmerge (1) will automatically chose a timecode scale factor so that all timecodes and durations have a precision of one audio sample.
Add multiple timecodes to single audio file (.mkv ...
https://stackoverflow.com/questions/62225801/add-multiple-timecodes-to-single-audio-file-mkv-resulting-from-concatenatin
1. ffmpeg -f concat -i mylist.txt -c copy output.mkv 2. mkvmerge -o output.mkv 1.mkv + 2.mkv with mylist.txt containing: file '1.mkv' file '2.mkv' But the final file output.mkv resulting from such a concatenation has lost timecodes in case 1. In case 2, there is only one time code that has been preserved (from input 2.mkv) at the end.
Mkvmerge timecode file - matroska-devel.matroska.narkive.com
https://matroska-devel.matroska.narkive.com/CAsTSflq/mkvmerge-timecode-file
Yes. Internally each packet (= frame) has a timecode, a bref and a fref parameter. Those are not changed by the timecode files. There is also a _third_ value, assigned_timecode. This one is changed by the timecode file. When the code wants to know which timecodes to hand over to libmatroska it does this: (pseudo-codish) timecode = packet->assigned_timecode
mkvmerge split an mkv into two parts at duration or ...
https://forum.doom9.org/showthread.php?t=173537
If you just want to split the MKV into two parts, select "split after duration" as the splitting method and type 01:14:00 in the field below. Set the maximum number of files to 2. That'll output two files such as video-001.mkv and video-002.mkv. The split will happen at the first keyframe after 01:14:00, so if the file is split a little later than you'd prefer, try something like …
mkvmerge -- Merge multimedia streams into a Matroska file
https://mkvtoolnix.download/doc/mkvmerge.html
The maximum number of blocks is 65535. If the number d is postfixed with ' ms ' then mkvmerge (1) puts at most d milliseconds of data into each cluster. The minimum for d is ' 100ms ', and the maximum is ' 32000ms '. mkvmerge (1) defaults to putting at most 65535 data blocks and 5000ms of data into a cluster.
How do I get the MKV timecodes file ? - Doom9's Forum
https://forum.doom9.org/showthread.php?t=160926
Join Date: May 2010. Posts: 72. How do I get the MKV timecodes file ? In a previous post where I had an audio/video sync issue, someone advised me to provide a timecodes file to MKVMerge. I searched in the MKVMerge help pages but did not find where this timecodes file was generated.
Mkvtoolnix edit by timecodes causes audio and video to ...
https://forum.videohelp.com/threads/396263-Mkvtoolnix-edit-by-timecodes-causes-audio-and-video-to-lose-sync
Mkvtoolnix edit by timecodes causes audio and video to lose sync. ***Btw Please don't tell me to just use staxrip or handbrake. Neither supports subtitle segmenting which toolnix can do. And VERY LITTLE TO NONE video skills. Furthermore, IT groups don't object since toolnix is standalone doesn't mess with system.
How to Prevent MKVMerge adding a delay? - VideoHelp Forum
https://forum.videohelp.com/threads/367447-How-to-Prevent-MKVMerge-adding-a-delay
MKVs store frames in DECODING ORDER rather than DISPLAY ORDER so in the file they're ordered IBB. But the time-code of the I-frame is 00:00:00.080 and since MediaInfo only looks at the time-code of the first frame to determine stream "delay" it's incorrectly assuming there is an 80ms delay in the video stream. The audio stream delay is called "delay relative to …
mkvmerge(1) - Linux man page
https://linux.die.net/man/1/mkvmerge
Normally mkvmerge(1) will use a value of 1000000 which means that timecodes and durations will have a precision of 1ms. For files that will not contain a video track but at least one audio track mkvmerge(1) will automatically chose a timecode scale factor so that all timecodes and durations have a precision of one audio sample. This causes bigger overhead but allows …
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