Linked by Thom Holwerda on Thu 30th Sep 2010 23:04 UTC
Google A few months ago, Google open sourced the VP8 video codec as part of the WebM video project, to create a truly Free/free unencumbered video format for the web as an answer to the non-Free/free patent-encumbered H264 format. Today, Google launched a new image format for the web, WebP, which aims to significantly reduce the file size of photos and images on the web.
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RE: Comment by hornett
by Kroc on Fri 1st Oct 2010 08:48 UTC in reply to "Comment by hornett"
Kroc
Member since:
2005-11-10

Might want to read this: http://x264dev.multimedia.cx/?p=541

Reply Parent Score: 5

RE[2]: Comment by hornett
by Neolander on Fri 1st Oct 2010 10:17 in reply to "RE: Comment by hornett"
Neolander Member since:
2010-03-08

You know, I'd tend to trust devs working on H.264 technology talking about their competitors just as much as Xiph devs talking about H.264.

Just sayin'...

Reply Parent Score: 4

RE[3]: Comment by hornett
by FealDorf on Fri 1st Oct 2010 11:44 in reply to "RE[2]: Comment by hornett"
FealDorf Member since:
2008-01-07

But trusting Google is no better, who'd definitely flaunt the format with exaggerations

Reply Parent Score: 2

Fettarme H-Milch Member since:
2010-02-16

You know, I'd tend to trust devs working on H.264 technology talking about their competitors just as much as Xiph devs talking about H.264.

Just sayin'...

Competitor? The very same guy also wrote a VP8 decoder for the ffmpeg project from scratch.
He's an active contributor to both worlds. I don't see him competing with his own software.

If you don't trust him, feel free to repeat his tests and compare the results.

Reply Parent Score: 6

RE[3]: Comment by hornett
by vaette on Mon 4th Oct 2010 09:15 in reply to "RE[2]: Comment by hornett"
vaette Member since:
2008-08-09

It is hardly an opinion piece, he does rather in-depth technical commentary, and, more importantly, he produces photos using freely available tools. Completely reproducible, and I must agree that WebP has a hard time matching up to even JPEG in his test:
http://x264.nl/developers/Dark_Shikari/imagecoding/vp8.png
vs.
http://x264.nl/developers/Dark_Shikari/imagecoding/jpeg.png

And, as quite often noted, JPEG is more or less the worst case compression-wise these days. The introduction of WebP is a lot like trying to introduce a new audio compression method with the argument that it beats MP3, while failing to match Vorbis and AAC. Sure JPEG is the standard choice on the web, but not because no one else has beat it on quality.

WebM remains a good thing to have around (though its greatest victory already happened when MPEG-LA loosened the h264 licensing deal for web streaming in direct response). WebP seems rather unnecessary though.

Really heartening in some ways to see his link at the end, where Theora through its years of retuning actually does a much better job than VP8 at this task:
http://x264.nl/developers/Dark_Shikari/imagecoding/theora.png
I am hardly a huge Theora fan, but hats off to the Xiph guys for their hard work.

Edited 2010-10-04 09:17 UTC

Reply Parent Score: 1

RE[2]: Comment by hornett
by hornett on Fri 1st Oct 2010 13:50 in reply to "RE: Comment by hornett"
hornett Member since:
2005-09-19

Quite a damning review!

I take my comments back for the time being (although I suppose there is is nothing to say that the compressor cannot be tuned/have more psy optimisation added in order to give better detail).

Edited 2010-10-01 13:53 UTC

Reply Parent Score: 2