After further review, it appears that the problem ceneters around interlaced video. From the logging, the Top field is processed twice (lines 3 & 4) and this seems to cause problems when the Bottom field finally arrives (line 8). Does this make since? Should/could this cause video quality problems?
[4064] slice:1 T mb:0 P fix pps:0 frame:8 poc:65552/2147483647/65552 ref:1/1 qp:24 loop:1:0:0 weight:0 [4064] slice:1 B mb:0 P fix pps:0 frame:8 poc:65552/65553/65552 ref:1/1 qp:24 loop:1:0:0 weight:0 [4064] slice:1 T mb:0 P fix pps:0 frame:9 poc:65554/2147483647/65554 ref:1/1 qp:24 loop:1:0:0 weight:0 [4064] slice:1 T mb:0 P fix pps:0 frame:9 poc:65554/2147483647/65554 ref:1/1 qp:24 loop:1:0:0 weight:0 [4064] mmco: unref short failure [4064] mmco: unref short failure [4064] illegal short term buffer state detected [4064] slice:1 B mb:0 P fix pps:0 frame:9 poc:65554/65555/65554 ref:1/1 qp:24 loop:1:0:0 weight:0 David David R Robison Open Roads Consulting, Inc. 103 Watson Road, Chesapeake, VA 23320 phone: (757) 546-3401 e-mail: [email protected] web: http://openroadsconsulting.com blog: http://therobe.blogspot.com book: http://www.xulonpress.com/bookstore/bookdetail.php?PB_ISBN=9781597816526 On 12/7/2012 10:41 AM, David R Robison wrote: > Hmm... So I cannot reproduce it with ffplay. I am using ffmpeg though > the ffdshow DirectShow filters. It does appear to be some kind of > buffering issue as if I buffer 500ms of video it plays fine, otherwise I > get video quality issues. Maybe I need to discuss this with the ffdshow > folks. David > > David R Robison > Open Roads Consulting, Inc. > 103 Watson Road, Chesapeake, VA 23320 > phone: (757) 546-3401 > e-mail: [email protected] > web: http://openroadsconsulting.com > blog: http://therobe.blogspot.com > book: http://www.xulonpress.com/bookstore/bookdetail.php?PB_ISBN=9781597816526 > > On 12/6/2012 6:37 PM, Carl Eugen Hoyos wrote: >> David R Robison <drrobison@...> writes: >> >>> I am having a problem with poor quality of H.264 video. >> Can you reproduce the poor quality with ffmpeg (the application)? >> If yes, please provide command line together with complete, uncut >> console output. >> >> Carl Eugen >> >> _______________________________________________ >> Libav-user mailing list >> [email protected] >> http://ffmpeg.org/mailman/listinfo/libav-user > > > This email communication (including any attachments) may contain confidential > and/or privileged material intended solely for the individual or entity to > which it is addressed. > If you are not the intended recipient, please delete this email immediately. > > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user This email communication (including any attachments) may contain confidential and/or privileged material intended solely for the individual or entity to which it is addressed. If you are not the intended recipient, please delete this email immediately. _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
