Ivan Popov
2005-Mar-30 11:02 UTC
[Theora-dev] ffmpeg2theora with mmx patches is available on konvalo.org
Hello, ffmpeg2theora (with encoder mmx patches) is available on konvalo.org. You can run it on Linux (2.6.x), FreeBSD (5.x) and NetBSD (2.x) on Intel x86. ffmpeg2theora may be considered the recommended Theora encoder. The author of the program is Jan Gerber @ v2v.cc Those of you who already use Konvalo.org do not need to do anything, the program is in your PATH. Otherwise see http://www.konvalo.org/?pagename=Main.Software ------------------------------------------------------------- On Wed, Mar 30, 2005 at 10:46:04AM +0200, Ivan Popov wrote:> In contrast, ffmpeg2theora converts the image to square pixels before > encoding to theora. That is a more straightforward approach,The above is no longer correct. It has improved a lot since version 0.10 which I tested. Sorry for the stale information. The current version (0.13) of ffmpeg2theora is capable of maintaining the pixel aspect ratio properly. You supply the picture aspect and it recalculates it to the pixel aspect ratio. It contains also all of the frequently used functions needed by an encoder, so you would prefer it to the theora-encoder script unless you need sophisticated video filtering. Another reason to try theora-encoder might be if your source data is in some exotic format which ffmpeg2theora would not accept. Noise filtering seems to be on the TODO list, so we can hope it will be soon incorporated into ffmpeg2theora. Enjoy, -- Ivan
Ivan Popov
2005-Apr-07 20:52 UTC
[Theora] ffmpeg2theora with mmx patches is available on konvalo.org
On Wed, Mar 30, 2005 at 09:02:25PM +0200, Ivan Popov wrote:> It contains also all of the frequently used functions needed by an encoder, > so you would prefer it to the theora-encoder script unless you need > sophisticated video filtering.Looking at movies from Prelinger Archives, many of them are telecined and interlaced. ffmpeg2theora does not seem to do detelecining, nor can mplayer do that (so it is impossible to supply the filtering args to theora-encoder). Good results at recoding to Theora can be achieved by consequent application of mencoder -vf filmdint -fps 29.97 -ofps 23.976 \ [possibly more filtering] \ -ovc lavc -lavcopts vbitrate=<a-high-bitrate> \ [-ovc copy does not produce a valid result] \ -o intermediate.avi \ ... theora-encoder ... intermediate.avi (ffmpeg2theora seems to have problems accepting the intermediate avi file as input, the resulting sound is broken) Do not forget -s and -S pixel aspect ratio options, very often pixels are not suare. Cheers, -- Ivan
pat cito
2005-Apr-14 14:37 UTC
[Theora] ffmpeg2theora with mmx patches is available on konvalo.org
I like konvalo.org coda client and I use it a lot on my computer at home. Unfortunately I'm sometimes forced to use other machines where I don't have permission to install the coda client. Is there a way to get those cool theora software on a konvalo FTP pub or something? Thanx in advance Pat --- Ivan Popov <pin@konvalo.org> wrote:> Hello, > > ffmpeg2theora (with encoder mmx patches) is > available on konvalo.org. > You can run it on Linux (2.6.x), FreeBSD (5.x) and > NetBSD (2.x) on Intel x86. > > ffmpeg2theora may be considered the recommended > Theora encoder. > The author of the program is Jan Gerber @ v2v.cc > > Those of you who already use Konvalo.org do not need > to do anything, > the program is in your PATH. Otherwise see > http://www.konvalo.org/?pagename=Main.Software__________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/
Jack Moffitt
2005-Apr-14 16:02 UTC
[Theora-dev] Re: [Theora] ffmpeg2theora with mmx patches is available on konvalo.org
> ffmpeg2theora (with encoder mmx patches) is available on konvalo.org. > You can run it on Linux (2.6.x), FreeBSD (5.x) and NetBSD (2.x) on Intel x86. > > ffmpeg2theora may be considered the recommended Theora encoder. > The author of the program is Jan Gerber @ v2v.ccRunning only on x86? Hardly. Make it work everywhere, then maybe it will be "considered the recommended encoder" :) jack.