ffmpeg command line for compressing DV to MPEG1

["Herman Robak" <herman@skolelinux.no>]

ffmpeg -i dv-video.avi -s 384x288 -vcodec mpeg1video -b 300 -g 48 -ac 1 -ab 64 -ar 32000 364kbs-video.mpeg

-s : Scale to this size (scale to exactly half height, and get deinterlaceing for free)
-vcodec : Video codec.  mpeg1video implies mp2 sound.
-b : Video bitrate.  300 kb/s is enough where there is little movement.
-g : Distance between keyframes.  With little movement, fewer keyframes are good.
-ac : Number of channels.  We are only recording one channel.
-ab : Audio bitrate in kb/s.  64 kbits is OK for one-channel speech.
-ar : The audio sample rate.  Lower sample rate reduces compression artifacts.

--
Herman Robak


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