Hi, Thank you for this report---I ran into the same issue, which seems to originate in ffmpeg conversion rather than the Theora codec, per se. I think the problem is that WMV videos can have variable frame rates, whereas most other video codecs use a fixed frame rate. This is not easy to fix.
Also, I suggest checking that the working version has correct a/v sync at random points through the video. Sincerely, George On Sat, August 29, 2009 11:54, Jeff Shippen wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Here is my experience from first attempts at transcoding the WMV file to > ogv on Mac OS X. I am using VLC 1.0.1 for playback. > > > Application: * Firefogg 0.9.9.6 * (the latest version to date) > > I used the three different presets (high quality, low quality, and web). > > _Results_ : > > In all three results, it looked like the video cycled through all the > frames within the first couple seconds. The video then displays the > last frame for the remainder of the 2 minute video. > > The Audio was fine in all three results. > > > > Application: * VLC 1.0.1 * (latest version to date). > > As a previous poster mentioned. VLC has the capability to transcode > files. In mac, click on File > Streaming/Exporting Wizard. Choose the > appropriate settings (theora for video, ogg for audio). My first couple > attempts, using low quality settings, failed. The product was similar > to that of firefogg product, the audio played fine, but the video cycled > through too quickly. > > After failed attempts, I upped the quality for both video and audio, and > then WHALA! It worked! NOTE: VLC requires the output file to be in > ".ogg" extension. Once the ogg file is generated, I manually changed > the extension to ".ogv". > > The following are the successful BITRATE settings I used: > Theora: 192 > Vorbis: 64 > > These settings were a few steps up from those that did not work, and > chosen somewhat at random. > > > Jeff Shippen > -----BEGIN PGP SIGNATURE----- > Version: GnuPG/MacGPG2 v2.0.12 (Darwin) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iQEcBAEBAgAGBQJKmU80AAoJEOojNXcqfMOKfsQH/3fYdqj9ffjGjxN7iXdaUm1I > uWKyMFBa17FxQI/GxUtdohHQV9b+hf09WgvcdMn0BL6UOJaldv3+uN/lJ2y4kyoF > 9M8elY0tr7sWh7EBZRc69iuooH6DMIxfVRpcZXJgvb28I7i2q89CEFZb/X5hE517 > u1SuV91ogkKtUOel2iLiH+oUmfTCR6aCyDmfd0UKNDoInW8RL7xfXPUru3Vd+WVQ > /FrfqXVQ+DByyEQwc5fYcOXlFsTXRzbCexF6UD+ZQhEe14uWl8jAEXQT1qGIWshv > /QYW+gBR/7mc1AwznqGMuPFvvzhPNi1+vLgBu/jxaWjkaJPcmwJSU3o+HBi/zg4= > =PqgO > -----END PGP SIGNATURE----- > >
