Video encode with CBR (constant bitrate)

Hi,


I'm currently working on video encoding. Is there any possible to encode the video with constant birate?

Because, I read the document of Video Tool Box, and it has only `kVTCompressionPropertyKey_AverageBitRate` property I can set. In AVAssetWriterInput also has `AVVideoAverageBitRateKey` only. If there is something I missed, please tell me.


Thanks

chihyen