[FFmpeg-devel] CBR Bitrate control in MPEG-2 video encoder

Sven Brandau wasisnlos
Tue May 25 22:40:29 CEST 2010


I've tried to encode a very unpredictable and varying video to MPEG-2 
video in CBR. It seems that the encoder can't regulate the bitrate so 
there are spikes where the scenes changes very fast. I would expect that 
the encoder is able to control all parameters, e.g. quantizer, to fit 
the bitrate without such spikes but a very low video quality on such 
scene changes.

I've set these parameters: bitrate, max/min bitrate, vbv buffer

Any suggestions?

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