[FFmpeg-user] how to set ffmpeg copy MJPEG stream to output file without decode? just unchanged psss to output file

[Soho Soho123]

dears ,

We use the option below for passing MJPEG stream to output. But it
seems slow to grab video data .
ffmpeg -f video4linux2 -vcodec mjpeg -r 30 -s 640x480 -i /dev/video0
-r 30 -vcodec copy http://localhost:8090/feed1.ffm
Does any one konw how to set :
ffmpeg transcode mjpeg stream data without decode, just unchaged pass
to output file ?


Thanks!

Soho