Linux - Ffmpeg command convert flv files to 3gp files, Converting all video files to 3gp files
Ffmpeg command convert flv files to 3gp filesConverting video file (.flv, .avi etc.) to .3gp
ffmpeg -i input.avi -s qcif -vcodec h263 -r 20 -b 180k -acodec libfaac -ab 64k -ac 2 -ar 22050 output.3gp
-i = input file name -s = set frame size, qcif=176x144 -vcodec = force video codec -r = frame-rate [default = 25] -b = bit-rate [200 kb/s] -acodec = force audio codec -ab = audio bitrate in bits/s [64k] -ac = no. of audio channels  -ar = audio sampling frequency [44100 Hz] optional: -sameq = use same video quality as source (implies VBR) -f = force format -y = overwrite output files
The above command will convert the given input.avi file to .3gp file. This command is very much helpful in converting the video files for mobile device.
The topic on Linux - Ffmpeg command convert flv files to 3gp files is posted by - Math
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