Hi! When I'm trying to append 2 raw h264 streams, after setting FPS for the first stream there is no way to set it for second one, but if I try to mux it, the message still appears and asks me to set FPS. That however would require tons of work because mkvextract doesn't have a MP4 muxer built in, and even though there are libraries that make this easier this is waaaaaaaaaaay more work than I'm willing to spend on such a feature. A possiblity would be to "extract" them into MP4 files instead because MP4 files don't need a fixed frame rate. Such video tracks cannot be put into AVI files without them getting all wrong regarding A/V sync. One problem and the foremost reason why I won't implement this in mkvextract itself is that files without a default duration most often do not have a fixed frame rate. And the fact that you can watch the files means that there are even more ways to demux stuff, just not with mkvextract. Like sneaker_ger said, there are possibilities. ![]() However I hope that you could revise your stance about demuxing because I would feel much more safer if I could later get streams out for possible re-encoding. I've used Matroska to store my TV captures mainly because your GUI is so easy to use and has worked very well.
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