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15th August 2008, 22:23 | #2 | Link | |
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Quote:
http://xiphmont.livejournal.com/3536...d=57635#t57635 Still, impressive gains. As always, the quality of the implementation is much more important that the codec standard itself. |
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18th September 2008, 11:48 | #3 | Link |
German doom9/Gleitz SuMo
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Which are, by the way, rather current and complete implementations? I would like to test Theora myself - which implementation should I prefer? I found for Win32:
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18th September 2008, 12:07 | #4 | Link |
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ffdshow still uses an old version of libtheora (1.0b3 from the top of my head). So I would not recommend that one.
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18th September 2008, 17:33 | #5 | Link |
German doom9/Gleitz SuMo
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Library 1.0b3 is still the most recent, according to http://theora.org/news/ ... But ffdshow has no detailed 2-pass control enabled for Theora.
I'm fine with CLI encoders. Just hope that there is a way to serve AVS to ffmpeg2theora. |
18th September 2008, 17:39 | #6 | Link |
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avs2yuv?
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18th September 2008, 18:15 | #7 | Link |
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Then I mixed up versions. ffdshow uses an old version from 2006. I tried updating it to latest SVN a while ago, compiled fine and all, but playback was a unstable with it. I suspect some changes are needed at the ffdshow side, due to some API changes in the library.
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19th September 2008, 09:19 | #8 | Link |
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@ Sharktooth:
avs2yuv sounds useful, unfortunately I seem to miss some details about the usage... Code:
avs2yuv.exe -raw $.avs -o - | ffmpeg2theora.exe -f raw -o $.ogv - $.avs: 720x576, 25 fps, 520 frames File `pipe:' does not exist or has an unknown data format. Output error: wrote only 590400 of 622080 bytes --------------------------- avs2yuv.exe - Fehler in Anwendung --------------------------- Die Anweisung in "0x00ac98f4" verweist auf Speicher in "0x00a97318". Der Vorgang "read" konnte nicht auf dem Speicher durchgeführt werden. Klicken Sie auf "OK", um das Programm zu beenden. --------------------------- OK --------------------------- |
22nd September 2008, 10:15 | #9 | Link |
German doom9/Gleitz SuMo
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P.S.: "raw" may be the wrong mode, ffmpeg2theora would not know the dimensions then. Unfortunately, there is no help of available input formats ("ffmpeg2theora -f help" would be useful); so I could only assume that the little hint from avs2yuv would lead me somewhere: "Output format is yuv4mpeg, as used by MPlayer and mjpegtools". So I tried:
Code:
avs2yuv.exe $.avs -o - | ffmpeg2theora.exe -f yuv4mpeg -o $.ogv - $.avs: 720x576, 25 fps, 520 frames File `pipe:' does not exist or has an unknown data format. Output error: wrote only 590400 of 622080 bytes --------------------------- avs2yuv.exe - Fehler in Anwendung --------------------------- Die Anweisung in "0x00ac98f4" verweist auf Speicher in "0x00a972f8". Der Vorgang "read" konnte nicht auf dem Speicher durchgeführt werden. Klicken Sie auf "OK", um das Programm zu beenden. --------------------------- OK --------------------------- __ Now I tried with temporary file: Code:
avs2yuv.exe $.avs -o $.y4m Now using this temporary file: Code:
ffmpeg2theora.exe -f yuv4mpeg -o $.ogv $.y4m Input #0, yuv4mpegpipe, from '$.y4m': Duration: N/A, bitrate: N/A Stream #0.0: Video: rawvideo, yuv420p, 720x576, 25.00 fps(r) Resize: 720x576 0:00:20.80 audio: 0kbps video: 2239kbps, time remaining: 00:00:00 The created Theora video looked fine. Last edited by LigH; 22nd September 2008 at 10:24. |
22nd September 2008, 18:54 | #10 | Link |
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there is also a "reference encoder" binary for windows available, once compiling the official source itself, called encoder_example.exe
it takes avs2yuv output piped as input
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11th October 2008, 17:56 | #12 | Link |
German doom9/Gleitz SuMo
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Great! (BTW: "Tusnelda" is a stereotype forename for a "house dragon" kind of woman, in Germany...)
Unfortunately, no reply from celtic_druid until today. Did someone scare him off? Last edited by LigH; 11th October 2008 at 17:59. |
29th October 2008, 13:57 | #15 | Link | |
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Thoera 1.0 RC2
The second release candidate of the Theora codec was released[1]:
Quote:
[1] http://www.theora.org/news/ |
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10th November 2008, 16:07 | #19 | Link |
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OK, now I can access those sites again, too. But I still have not idea of what was going on up to now.
Update: When having a look at the timeline of the Xiph Trac server, one can see that there was a very unusual period of inactivity from the 5th. to the 9th. of November. Last edited by hellfred; 10th November 2008 at 20:13. Reason: Update |
29th March 2009, 10:21 | #20 | Link |
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Theora 1.1 alpha 1 released. There are also some binaries.
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