On Tue, 2006-03-28 at 23:01 +0200, Hans Verkuil wrote: > On Tuesday 28 March 2006 22:49, Vladimir Ivashchenko wrote: > > Hi, > > > > It seems that even though I set bitrate_mode to 1 (CBR) the content > > is still not CBR. If I check it with various tools (such as tcscan) > > they show different peak and average bitrates. > > > > Any ideas? > > I've seen that before. CBR may not work or only poorly. Could you try > with some different stream_type values? I've always wondered if it > might work with a specific stream type. Another point to look at is the > bitrate values. Try to experiment with different peak values for > example.
I went through all stream_type values. The only value where CBR worked is 2 (MPEG1) and 11 (VCD). In case of MPEG1, it was encoding at the bitrate I specified (3 mbps), in case of VCD it switched to 1+ mbps. However for my application I need to have CBR in MPEG2. Reason being is that I record this stream into Kasenna VOD server and for it to work properly stream should be CBR, and MPEG1 the quality is noticeably lower. -- Best Regards, Vladimir Ivashchenko Chief Technology Officer Thunderworx Cyprus - www.thunderworx.com _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
