If you have MP4 files and you have only copied the codecs, these will probably be choppy and out of sync.Otherwise, you can go directly to the fourth. Generally, it works with some of them, but if your video is encoded in h.264 and AAC 5 In the second case, I make a simple copy of the audio and video codecs. I can only put some suggestions like this 3įfmpeg -i originalVideo.mp4 -ss 01:34:50 -to 02:22:50 -c:v libx264 -preset ultrafast -qp 0 -c:a libmp3lame -b:a 160k -ac 2 -ar 44100 newStream1.mp4Īnother solution that save time and storage resources is 4įfmpeg -i originalVideo.mp4 -ss 01:34:50 -to 02:22:50 -codec:v copy -codec:a copy newStream1.mp4 The choice of the best encoding process is complicated and strictly connected to the user's needs.
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