ffmpeg at half speed ... sort of.
steve at sohara.org
Mon Feb 7 02:04:13 PST 2005
On Sun, 6 Feb 2005 22:28:41 -0500
Paul Chvostek <paul+fbsd at it.ca> wrote:
> This is weird. When I encode with ffmpeg, the resultant file appears to
> play back at about half the expected framerate, with the wrong bitrate.
> I encode with ffmpeg:
> encode$ ffmpeg -y -an -vd /dev/bktr0 -s 160-120 -tvstd ntsc \
> -vcodec mpeg4 -b 50 -f avi -t 15 -r 29.97 test.avi
-b 50 is a video bandwidth of 50 Kbit/s which is rather low, try
leaving it out (to get the default 200 Kbit/s) or setting it higher. It
may well be that ffmpeg isn't achieving as much compression as you had
been hoping for.
Also what sort of CPU are you using ?
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