I downloaded xiph.org's free theora-encoded movie called "honey", both the large and the small versions. I tried playing the small version on both a g4 450 "OS X" mac and a PIII 800mhz running WinXP. On both platforms I used VLC media player version 0.7.2 Neither one of these platforms could play the movie smoothly from the hard disk drive. There were several moments, that would stretch for many seconds, where the frame rate would fall significantly below 24fps and the audio would slur. I have other avi/mp3 encoded video files that I have played many times on these platforms and I have never seen performance this poor. I thought that one of the advantages of theora was that it was computationally less demanding than avi. Is this wrong? I hope that the quality of your theora players increases or your excellent new format might gain a bad reputation. _______________________________________________ Join Excite! - http://www.excite.com The most personalized portal on the Web!
Guy wrote:> I downloaded xiph.org's free theora-encoded movie called "honey", both the large and the small versions. I tried playing the small version on both a g4 450 "OS X" mac and a PIII 800mhz running WinXP. On both platforms I used VLC media player version 0.7.2 > > Neither one of these platforms could play the movie smoothly from the hard disk drive. There were several moments, that would stretch for many seconds, where the frame rate would fall significantly below 24fps and the audio would slur. > > I have other avi/mp3 encoded video files that I have played many times on these platforms and I have never seen performance this poor. I thought that one of the advantages of theora was that it was computationally less demanding than avi. Is this wrong? I hope that the quality of your theora players increases or your excellent new format might gain a bad reputation.Thanks for checking the videos out. Yes, we are aware of the poor performance of the decoder on large frame size films. The decoder has not been optimized yet, as we were focusing on completeness and correctness. Optimization will come eventually. --- Stan Seibert
<40D8341B.5040008@mailsnare.net> Message-ID: <40D87DB2.8020403@gmx.de> Stan Seibert schrieb:> Guy wrote: > [...] > Thanks for checking the videos out. Yes, we are aware of the poor > performance of the decoder on large frame size films. The decoder has > not been optimized yet, as we were focusing on completeness and > correctness. Optimization will come eventually. > > --- > Stan Seibert > _______________________________________________ > Theora mailing list > Theora@xiph.org > http://lists.xiph.org/mailman/listinfo/theora > >Hello, I just checked out, if your streams can be played back with xine. I saw you haven't cropped the black borders of honey. In my encodingtests cropping black borders so that there are no more black lines/rows increased quality of the encode a bit. BTW xine played the files. I was surprised to find a gentoo ebuild for theora :-) Works out of the box. Cheers Andreas Heinchen