Getting Theora competitive - Page 11

Kurtnoise · 12th November 2009, 17:52

Quote:

Originally Posted by nurbs

Could somebody please upload a copy of the ffmpeg2theora build with avs support for me. Kurtnoises site seems to be down unfortunately, so I can't get that.

http://kurtnoise.free.fr/misc/

Quote:

Originally Posted by donaldtone

Your version with avs support is very useful. It is also supposed to support subtitle since it has kate built in. However, it does not support subtitles.

use either my last build from this month (20091113) or oggz-merge from the oggztools package + kateenc. Same link as above...

donaldtone · 13th November 2009, 14:53

Thanks Kurtnoise!
The last ffmpeg2theora (20091113) works very well with avs script and kate subtitle encode.

There is just a concern, the kate lib version built in is just 0.3.1.

Would it be possible to change to kate lib 0.3.6(last official version)? Thanks.

donaldtone · 13th November 2009, 14:55

BTW: I could not find kateenc binary for windows anywhere.
Could anybody do me a favor?

Kurtnoise · 13th November 2009, 16:32

Quote:

Originally Posted by donaldtone

There is just a concern, the kate lib version built in is just 0.3.1.

Would it be possible to change to kate lib 0.3.6(last official version)?

build from today updated to the libkate 0.3.6. Anyway, you won't see any differences.

btw, I don't know why you're so interesting by the srt support in libkate. The rendering is poor to me (italic not supported by example)...

Quote:

Originally Posted by donaldtone

BTW: I could not find kateenc binary for windows anywhere.
Could anybody do me a favor?

http://kurtnoise.free.fr/misc/libkate-0.3.6.zip

donaldtone · 13th November 2009, 21:42

Thank you very much.

Agree with you, the kate can not support <i>, <b> tags right now.

But Kate is in its early age, let's see its progress.

And Kate is the only subtitle format in new OGV format. I am not sure OGV support srt or not even though ogm supports.

donaldtone · 17th November 2009, 16:24

new edition of kate has just released.
It fixes a lot of issues and add support of SRT style(that means italic, bold style can be rendered correctly.).

0.3.7 - 15 november 2009
new encoding functions to specify timing in granule rate units
fix SRT timing precision problems
new -M option to kateenc to allow HTML-like markup in SRT files
allow the last event in an SRT file to not be followed by an empty line

iwod · 15th December 2009, 07:55

No news at all? Or have they given up theora and just move to X264

Rasi · 15th December 2009, 08:21

Quote:

Originally Posted by iwod

No news at all? Or have they given up theora and just move to X264

? look one post above yours?

Astrophizz · 15th December 2009, 13:29

That's just for Kate, which is used for subtitles. That wasn't a post about theora.

iwod · 25th January 2010, 03:59

That is nearly 4 months without update.

tuqueque · 26th January 2010, 22:19

Actually, since yesterday, a new development branch was created for the eventual 1.2 release... Check it out https://trac.xiph.org/timeline

And there is already some nice improvements.

ricardo.santos · 6th February 2010, 01:27

ffmpeg2theora 0.26 released

nurbs · 6th February 2010, 02:08

I did a small test of ffmpeg2theora 0.26 and x264 r1400. I only two sources and the default settings on both encoders, with x264 encoded at the same and half the bitrate the Theora encoder used. Exact settings, links to source files, PSNR, SSIM and comparison pics can be found in the download. I can upload encoded samples should anyone be interested.

Theora still needs a lot of work. Even at half the bitrate x264 produces clearly better results.
I'd be interested why the background in the score area of the Touhou video is so blurry in Theora. Since it is completely static it shouldn't be so low quality.

Dark Shikari · 6th February 2010, 04:38

Quote:

Originally Posted by nurbs

I did a small test of ffmpeg2theora 0.26 and x264 r1400. I only two sources and the default settings on both encoders, with x264 encoded at the same and half the bitrate the Theora encoder used. Exact settings, links to source files, PSNR, SSIM and comparison pics can be found in the download. I can upload encoded samples should anyone be interested.

Theora still needs a lot of work. Even at half the bitrate x264 produces clearly better results.
I'd be interested why the background in the score area of the Touhou video is so blurry in Theora. Since it is completely static it shouldn't be so low quality.

MB-tree is the reason x264 performs so well on the score area: without an algorithm that performs a similar purpose, it's impossible to compete on that particular area of the frame (except by simply cheating and setting a really high ipratio). This isn't really something to criticize Theora heavily on, since x264 is the only encoder with MB-tree

By the way, you should test the latest Theora SVN; they added adaptive lambda (rough equivalent of x264's AQ), which should help quality in flat areas a lot.

nurbs · 6th February 2010, 08:46

I will test it if anyone compiles it for me. AQ is important so it will be interesting to see the results when it's released.

ricardo.santos · 7th February 2010, 19:52

@nurbs
You can try the ffmpeg2theora nightly builds
http://firefogg.org/nightly/

last update was today so im guessing they're compiled using latest build

hellfred · 7th February 2010, 23:32

Quote:

Originally Posted by ricardo.santos

@nurbs
You can try the ffmpeg2theora nightly builds
http://firefogg.org/nightly/

last update was today so im guessing they're compiled using latest build

The build is based on Theora 1.1 Thusnelde.

Code:

D:\Manga\Maian>ffmpeg2theora.exe
ffmpeg2theora 0.26+svn16879M - Xiph.Org libtheora 1.1 20090822 (Thusnelda)

The latest branch should annouce itself as "ptalarbvorm". Maybe ask at the theora mailing list for a build.

Yours,
Hellfred

Astrophizz · 8th February 2010, 01:52

Good lord, where did they get that name?

mariush · 8th February 2010, 04:51

ogg is the container
vorbis is the audio codec
theora is the video codec
thusnelda is the release name
Stephen R. Savage is the .....

Midzuki · 8th February 2010, 05:11

Astrophizz wrote:

Quote:

Good lord, where did they get that name?

I have no idea.

Anyway, for the curious, here goes the URL to the "offending codename":

http://svn.xiph.org/experimental/der...a-ptalarbvorm/

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13th November 2009, 14:53	#202 \| Link
donaldtone Registered User Join Date: Sep 2004 Posts: 32	Thanks Kurtnoise! The last ffmpeg2theora (20091113) works very well with avs script and kate subtitle encode. There is just a concern, the kate lib version built in is just 0.3.1. Would it be possible to change to kate lib 0.3.6(last official version)? Thanks.

13th November 2009, 14:55	#203 \| Link
donaldtone Registered User Join Date: Sep 2004 Posts: 32	BTW: I could not find kateenc binary for windows anywhere. Could anybody do me a favor?

13th November 2009, 21:42	#205 \| Link
donaldtone Registered User Join Date: Sep 2004 Posts: 32	Thank you very much. Agree with you, the kate can not support <i>, <b> tags right now. But Kate is in its early age, let's see its progress. And Kate is the only subtitle format in new OGV format. I am not sure OGV support srt or not even though ogm supports.

17th November 2009, 16:24	#206 \| Link
donaldtone Registered User Join Date: Sep 2004 Posts: 32	new edition of kate has just released. It fixes a lot of issues and add support of SRT style(that means italic, bold style can be rendered correctly.). 0.3.7 - 15 november 2009 new encoding functions to specify timing in granule rate units fix SRT timing precision problems new -M option to kateenc to allow HTML-like markup in SRT files allow the last event in an SRT file to not be followed by an empty line

15th December 2009, 07:55	#207 \| Link
iwod Registered User Join Date: Apr 2002 Posts: 756	No news at all? Or have they given up theora and just move to X264

15th December 2009, 13:29	#209 \| Link
Astrophizz Registered User Join Date: Jul 2008 Posts: 184	That's just for Kate, which is used for subtitles. That wasn't a post about theora.

25th January 2010, 03:59	#210 \| Link
iwod Registered User Join Date: Apr 2002 Posts: 756	That is nearly 4 months without update.

26th January 2010, 22:19	#211 \| Link
tuqueque Registered User Join Date: Jun 2009 Posts: 26	Actually, since yesterday, a new development branch was created for the eventual 1.2 release... Check it out https://trac.xiph.org/timeline And there is already some nice improvements.

6th February 2010, 01:27	#212 \| Link
ricardo.santos Registered User Join Date: Mar 2005 Location: Portugal Posts: 907	ffmpeg2theora 0.26 released

6th February 2010, 02:08	#213 \| Link
nurbs Registered User Join Date: Dec 2005 Posts: 1,460	I did a small test of ffmpeg2theora 0.26 and x264 r1400. I only two sources and the default settings on both encoders, with x264 encoded at the same and half the bitrate the Theora encoder used. Exact settings, links to source files, PSNR, SSIM and comparison pics can be found in the download. I can upload encoded samples should anyone be interested. Theora still needs a lot of work. Even at half the bitrate x264 produces clearly better results. I'd be interested why the background in the score area of the Touhou video is so blurry in Theora. Since it is completely static it shouldn't be so low quality.

6th February 2010, 08:46	#215 \| Link
nurbs Registered User Join Date: Dec 2005 Posts: 1,460	I will test it if anyone compiles it for me. AQ is important so it will be interesting to see the results when it's released.

7th February 2010, 19:52	#216 \| Link
ricardo.santos Registered User Join Date: Mar 2005 Location: Portugal Posts: 907	@nurbs You can try the ffmpeg2theora nightly builds http://firefogg.org/nightly/ last update was today so im guessing they're compiled using latest build

8th February 2010, 01:52	#218 \| Link
Astrophizz Registered User Join Date: Jul 2008 Posts: 184	Good lord, where did they get that name?

8th February 2010, 04:51	#219 \| Link
mariush Registered User Join Date: Dec 2008 Posts: 589	ogg is the container vorbis is the audio codec theora is the video codec thusnelda is the release name Stephen R. Savage is the .....