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5th June 2004, 13:30 | #1 | Link |
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ffmpeg2theora
ok, i now had the time to play around a little bit with the ffmpeg2theora tool
its basically the theora reference encoder (still very young and untuned), combined with ffmpeg, which means it allows all formats as inputs, which ffmpeg handles too (list) and outputs to spec compliant .ogg files for encoding i used the following commandline (copy it to a *.txt file, rename the file to *.bat and execute it) Code:
ffmpeg2theora.exe -o theora_test.ogg --croptop 82 --cropbottom 78 --cropleft 2 --cropright 2 -x 640 -y 256 -v 6 "c:\path to\vts_02_5.vob" --output,-o: alternative output --format,-f: specify input format --width,-x: scale to given size --height,-y: scale to given size --crop[top|bottom|left|right]: crop input before resizing --deinterlace,-d [off|on]: en/disable deinterlace (enabled by default right now) --videoquality,-v [0 to 10]: encoding quality for video (variable bitrate/1pass - quality based/in my test -v 6 resulted in ~750kbps) --audioquality,-a [-1 to 10]: encoding quality for audio --samplerate,-H: set output samplerate in Hz --nosound: disable the sound from input --debug: output some more information during encoding if you try it out, you will see that the encoder is still very basic and untuned (well, the format is some weeks old), but it already offers a nice output (still has a way to go to keep up with xvid)
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Between the weak and the strong one it is the freedom which oppresses and the law that liberates (Jean Jacques Rousseau) I know, that I know nothing (Socrates) MPEG-4 ASP FAQ | AVC/H.264 FAQ | AAC FAQ | MP4 FAQ | MP4Menu stores DVD Menus in MP4 (guide) Ogg Theora | Ogg Vorbis use WM9 today and get Micro$oft controlling the A/V market tomorrow for free Last edited by bond; 2nd August 2004 at 21:59. |
6th June 2004, 01:38 | #2 | Link | |
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Re: ffmpeg2theora
Quote:
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6th June 2004, 21:12 | #4 | Link | |
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7th June 2004, 09:43 | #5 | Link |
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Somehow this didn't work for me, but I just tried it a few minutes. MPC does not start playing and if I try to seek in the file, it crashes immediately. Internal ogg splitter was of course disabled. System was Win2K SP4 with DirectX 9b.
tiki4 Off-topic: Can someone reach vorbis.com, theora.org or xiph.org the last days, it seems the DNS entries are not resolved for me...? Last edited by tiki4; 7th June 2004 at 09:54. |
7th June 2004, 10:27 | #6 | Link | |
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on the illiminable homepage it says:
Quote:
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7th June 2004, 11:39 | #7 | Link | |
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20th June 2004, 15:11 | #9 | Link |
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new version released (0.8)
- use ffmpeg aspect ration if possible - normalize quality options to 0-10 - fix skipping issues with a/v sync doesnt seem as if cropping is possible now
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Between the weak and the strong one it is the freedom which oppresses and the law that liberates (Jean Jacques Rousseau) I know, that I know nothing (Socrates) MPEG-4 ASP FAQ | AVC/H.264 FAQ | AAC FAQ | MP4 FAQ | MP4Menu stores DVD Menus in MP4 (guide) Ogg Theora | Ogg Vorbis use WM9 today and get Micro$oft controlling the A/V market tomorrow for free |
15th July 2004, 19:14 | #12 | Link | |
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Between the weak and the strong one it is the freedom which oppresses and the law that liberates (Jean Jacques Rousseau) I know, that I know nothing (Socrates) MPEG-4 ASP FAQ | AVC/H.264 FAQ | AAC FAQ | MP4 FAQ | MP4Menu stores DVD Menus in MP4 (guide) Ogg Theora | Ogg Vorbis use WM9 today and get Micro$oft controlling the A/V market tomorrow for free |
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18th July 2004, 22:39 | #13 | Link |
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a new version of ffmpeg2theora has been released!
changelog since 0.8: 0.10.2 2004-07-17 - add cropping support - remove support for ffmpeg<0.4.9-pre1 - change configure.ac and Makefile.am to better build with mingw32 0.10.1 2004-07-15 21:03:15 - fix problems with mpeg files using ffmpeg from cvs or versions higher than 0.4.8. - remove --with-ffmpegcvs and detect changes by LIBAVCODEC_BUILD 0.10 2004-07-10 18:14:15 - write eos at the end of the file. - fix memleak due to not enough calls of ogg_stream_pageout 0.9 2004-07-04 13:14:15 - add presets - add more comandline options i updated the sample commandline in the first post in this thread
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Between the weak and the strong one it is the freedom which oppresses and the law that liberates (Jean Jacques Rousseau) I know, that I know nothing (Socrates) MPEG-4 ASP FAQ | AVC/H.264 FAQ | AAC FAQ | MP4 FAQ | MP4Menu stores DVD Menus in MP4 (guide) Ogg Theora | Ogg Vorbis use WM9 today and get Micro$oft controlling the A/V market tomorrow for free |
19th August 2005, 13:25 | #16 | Link |
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the reference theora encoder's quality doesnt reach xvid or x264, but i wouldnt say that the quality sucks hard
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Between the weak and the strong one it is the freedom which oppresses and the law that liberates (Jean Jacques Rousseau) I know, that I know nothing (Socrates) MPEG-4 ASP FAQ | AVC/H.264 FAQ | AAC FAQ | MP4 FAQ | MP4Menu stores DVD Menus in MP4 (guide) Ogg Theora | Ogg Vorbis use WM9 today and get Micro$oft controlling the A/V market tomorrow for free |
31st August 2005, 08:19 | #17 | Link | |
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2005-08-31 new version released - 0.15
changelog: Quote:
btw, I've a question : Is there a way to feed as input a list file in this tool ? (i.e a simple text file with the paths of the different input files). |
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31st August 2005, 09:16 | #18 | Link | |
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Quote:
Code:
Examples: ffmpeg2theora videoclip.avi (will write output to videoclip.avi.ogg) cat something.dv | ffmpeg2theora -f dv -o output.ogg - Live encoding from a DV camcorder (needs a fast machine) dvgrab - | ffmpeg2theora -f dv -x 352 -y 288 -o output.ogg - Live encoding and streaming to icecast server: dvgrab --format raw - | \ ffmpeg2theora -f dv -x 160 -y 128 -o /dev/stdout - | \ oggfwd iccast2server 8000 password /theora.ogg Code:
:: Batch encoding of several files. ffmpeg2theora avi1.mpg ffmpeg2theora avi2.avi PAUSE |
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1st September 2005, 21:11 | #20 | Link |
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hm a nice alternative for virtualdub lover is also ffdshow which can output spec compliant theora in .ogg (yeah .ogg, not .ogm) from inside its interface
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Between the weak and the strong one it is the freedom which oppresses and the law that liberates (Jean Jacques Rousseau) I know, that I know nothing (Socrates) MPEG-4 ASP FAQ | AVC/H.264 FAQ | AAC FAQ | MP4 FAQ | MP4Menu stores DVD Menus in MP4 (guide) Ogg Theora | Ogg Vorbis use WM9 today and get Micro$oft controlling the A/V market tomorrow for free |
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