Or change the loglevel to only show errors: "-loglevel error -stats". You might be able to get rid of the warning messages by adding "-fflags +genpts" before the input file. Spitting out lots of warning messages can slow the process down. Though for such a short video the remux should have been near instantaneous. Some players can't handle some codecs in some containers - so you might have problems with playback.
The video and audio were not re-encoded and lost no quality. The existing video and audio were remuxed into a new container (MPG to MP4). MediaInfo says both input.mpg and output.mp4 are variable bitrate it states that the bitrate for input.mpg is 5,995 kb/s whereas the bitrate for output.mp4 is 6,022 kb/s both are 720x480 both are 29.97 fps both use a lossy compression mode.ĭid the command produce a lossless copy of the desired excerpt? Note the: "-c:v copy -c:a copy". Code: ffmpeg -i input.mpg -ss 00:00:39 -to 00:01:29 -c:v copy -c:a copy output.mp4 It produced the desired output clip, but the process was slow and accompanied by many messages.
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