build 5666) (dot 3)Ĭonfiguration: –enable-libx264 –enable-gpl –enable-shared This doesn’t matter for an input that only has one stream per stream type (video, audio, subtitle, etc), but adding “-map 0” will ensure that all streams from the (first) input will be copied if your input contains multiple tracks per stream type (such as one video stream and two audio streams).įfmpeg -i MTStest.mp4 -metadata title=”66115-title of clip” -metadata author=”authors name” -metadata description=”some description” -c copy -y /tmp/tmp.mov & ffmpeg -i /tmp/tmp.mov -c copy -y MTStest.mp4Īnd this is the output from the command line:įfmpeg version N-49695-g4e2c636 Copyright (c) 2000-2013 the FFmpeg developersīuilt on 13:15:40 with gcc 4.2.1 (GCC) (Apple Inc. In the case where several streams of the same type rate equally, the lowest numbered stream is chosen. It picks the “best” of each based upon the following criteria for video it is the stream with the highest resolution, for audio the stream with the most channels, for subtitle it’s the first subtitle stream. From the documentation:īy default ffmpeg includes only one stream of each type (video, audio, subtitle) present in the input files and adds them to each output file.

By default ffmpeg will choose to copy only the “best” streams but not automatically choose all streams when using “-c copy”. “ ffmpeg -i original.mp4 -metadata title='my title' -c copy -y /tmp/tmp.mp4 & ffmpeg -i /tmp/tmp.mp4 -c copy -y original.mp4“Ĭonsider adding “-map 0”.

Ffmpeg map empty