To duplicate a non-audio/video data stream from the input MP4 file using FFmpeg, you can use the -map
option to specify the input stream and the -codec copy
option to copy the stream without any re-encoding.
For example, if you want to duplicate stream 1 from the input file input.mp4
, you can use the following command:
ffmpeg -i input.mp4 -map 0:1 -codec copy output.mp4
This command will copy stream 1 from the input file and save it to output.mp4
without any re-encoding.
Note that the -map
option specifies the input stream using the format input_file:stream_specifier
, where the input_file
is the input file and the stream_specifier
specifies which stream to use. The stream specifier can be a number (such as 1
for stream 1), a name (such as subtitle
), or a type (such as v
for video or a
for audio).
Asked: 2022-12-03 11:00:00 +0000
Seen: 10 times
Last updated: Sep 06 '21