However, when I use this, depending on the time, either the first 5 seconds or last 5 seconds of video are blank. I was using this command, as I'd done with previous videos: ffmpeg -i source.mp4 -ss 00:00:10 -t 00:00:30 -c copy -y output.mp4. If you explain what you are actually trying to achieve we can give a more accurate answer. I'm using ffmpeg to cut sections out of a video. The result is often overly complicated with a suboptimal output when the actual solution is usually much simpler. json file next to your file ffprobe -v quiet -print. Now inspect a file using ffprobe (comes bundled with ffmpeg) This redirects the ffprobe help to a file ffprobe -h > ffprobehelp.txt This creates a report next to your file ffprobe -report SOMEFILE.mp4 This creates your report as. Trying to copy settings is almost always an example of the XY problem.įor example, a user may want to copy settings to get a video to play on a particular device. sudo port install ffmpeg +gpl +lame +x264 +xvid. I am the author but I don't recommend doing this. See example at ffmpeg: transcode using same codec and params as input. Also do not mix options which belong to different files. Perhaps that will achieve what you are trying to do. Do not mix input and output files first specify all input files, then all output files. Stream copyīut you can stream copy (re-mux) instead of encode which is like a copy and paste: ffmpeg -i input.mkv -map 0 -c copy output.mkv But it has no such feature to automatically copy all of the encoding settings from the input to the output.

When encoding ffmpeg will automatically attempt to copy some settings (width, height, frame rate, sample rate, channel layout, pixel format, etc).

Ffmpeg copy protion of file