On 09/04/2014 12:33 PM, SF wrote: > Clearly, the following options : > > -b:v 2300k -maxrate 2500k -bufsize 2500k -muxrate 2500k > > are consuming more than twice CPU power than > -maxrate 2500k -bufsize 2500k -muxrate 2500k
What is the resulting bitrate in the second case? Much smaller? Another explanation could be that if you ask for a very specific bitrate the encoding process has to encode a frame, then retry a few times with stronger/weaker quantization to match the bitrate target. I suppose the code does not really encode, just estimate used bits, but I would not be surprised if estimation would be almost as slow as actual encoding. I'm not familiar with code internals, so I could be wrong. -- Roberto Ragusa mail at robertoragusa.it _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
