[FFmpeg-user] FFMPEG constant bitrate with libvpx on FreeBSD 9

Manas Bhatnagar b.manas.88 at gmail.com
Tue Feb 4 02:23:07 CET 2014

Hello. I am running ffmpeg version 2.1.1. I am trying to convert a h264,ac3
.mkv to a vp8,ogg .webm file with constant bitrate. the command I am using
is "ffmpeg -i video.mkv -c:v libvpx -b:v 450k -minrate 450k -maxrate 450k
-c:a libvorbis -b:a 48k -ac 2 video.webm". the output video file that is
produced always has a very high bitrate (1000+kbps). I would like some help
with making ffmpeg produce a constant bitrate file. the source file has a
size of 1280x714 and I am not altering that.

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