dressger.blogg.se - Ffmpeg cut video start end

The first one is good in itself, more than that - it is faster, but sometimes creates output files with certain flaws. There are two ways how to split video files by ffmpeg.

You can use these two methods which work for Windows and Linux. For high quality video and audio, read the x264 Encoding Guide and the AAC Encoding Guide, respectively.įor example: ffmpeg -ss -i in.mp4 -t -c:v libx264 -c:a aac -strict experimental -b:a 128k out.mp4 If you leave out the -c copy option, ffmpeg will automatically re-encode the output video and audio according to the format you chose. This won't harm the quality and make the command run within seconds.įor more info, see How to cut a video, with re-encoding

-c copy copies the first video, audio, and subtitle bitstream from the input to the output file without re-encoding them.

For example, if you cut with -ss 3 -i in.mp4 -to 5, the output will be five seconds long. Note that if you've used -ss, you have to subtract this from the -to timestamp.

Instead of -t, you can also use -to, which specifies the end time (needs -copyts if -ss is before -i, for faster seeking).

-t specifies the duration of the clip (same format).Use this to cut video from to : ffmpeg -ss -i in.mp4 -to -c copy -copyts out.mp4 Use this to cut video from for : ffmpeg -ss -i in.mp4 -t -c copy out.mp4 Packaged versions from various distributions are often outdated and do not behave as expected. Make sure you download a recent version of ffmpeg, and don't use the one that comes with your distribution (e.g.