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Old 1st May 2003, 23:30   #1  |  Link
rududu author
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Rududu codec : new test version

Hello all !

I just released a new version of Rududu, so I'm very interrested to know what you think about it, what should be improved, what is good ...
for the english speaking people, the page is :
http://www.ifrance.com/rududu/codec3en.htm
pour les francophones :
http://www.ifrance.com/rududu/codec3.htm

thank you for your answers

Nicolas
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Old 2nd May 2003, 00:08   #2  |  Link
Sirber
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Allo Nicolas.

Pense-tu offrir les sources aussi?

Hi Nicolas.

Do you think you'll release the sources?
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Old 2nd May 2003, 14:04   #3  |  Link
gino25
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great!!!!!!!!!!!!
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Old 2nd May 2003, 14:40   #4  |  Link
rududu author
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Quote:
Originally posted by Sirber
Allo Nicolas.

Pense-tu offrir les sources aussi?

Hi Nicolas.

Do you think you'll release the sources?
Ce n'est pas exclu, mais pas pour le moment. Peut-être lorsque j'aurais trouvé un boulot.

It's possible, but not now. Maybe when I'll found a job.
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Old 2nd May 2003, 17:32   #5  |  Link
gino25
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What are settings for a high quality encoding?

I tried some settings but video has not much details
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Old 2nd May 2003, 18:20   #6  |  Link
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Quote:
Originally posted by gino25
What are settings for a high quality encoding?

I tried some settings but video has not much details
Well ...

good question :-)

The min quality was 32, but I limited it to 64 because of some (stupid ?) reasons. So you can't for the moment. And if you try to set the dead zone ratio below 256-ThresRatio you will see a beautifull bug. So I have to correct all this.

Sorry :-)
I have too much tested with the settings for a "middle" video quality...

Nicolas
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Old 3rd May 2003, 00:48   #7  |  Link
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This sounds definatly interesting. Can you please give some more information like

- is the codec meant for archive or capturing purpose? (i.e., which datarate does it perform at "best")
- how fast is it? (i.e., does it do 720x576 in 20x realtime or is it more like 5fps)

... and so on.

If we test it, we need to know the "design goal" to give a proper feedback.

Thanks for your nice work, keep it up!

Best regards
Koepi
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Old 3rd May 2003, 01:13   #8  |  Link
Sirber
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I'd like to know if it's I frames only in wavelet or if there is P frames too...
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Old 3rd May 2003, 09:01   #9  |  Link
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Quote:
Originally posted by Sirber
I'd like to know if it's I frames only in wavelet or if there is P frames too...
All the frames are compressed with wavelet. it's the antonini 9/7 transform, used in the JPEG2000 standard.
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Old 3rd May 2003, 14:42   #10  |  Link
gino25
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I have tried a lot of settings. But in all videos there is low details. (quality was at max)

Ruududu version2 have more details.

Why? Help
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Old 3rd May 2003, 14:49   #11  |  Link
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Won't we have greater quality by using p-frames?
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Old 3rd May 2003, 15:14   #12  |  Link
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Quote:
Originally posted by Sirber
Won't we have greater quality by using p-frames?
There are P frames, I'm just saying that I frames and P frames are compressed using wavelet (even the motion vector field will be compressed using a simple wavelet)
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Old 3rd May 2003, 15:22   #13  |  Link
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That's great! I taught it was only I frames... sorry
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Old 3rd May 2003, 15:29   #14  |  Link
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So i still have to assume things and don't get any real insights? :P

Let me summarize:

rududu codec is
- an (integer?) wavelet (antonini 9/7 transform) codec
- using I- and Pframes
- using wavelets for compressing motion vectors (wtf? wavelets and motion vectors don't mix, sounds like a block based attempt again)
- optimized for medium quality at unknown speed and for unknown purpose (archive quality / temporary capturing space+speed)
- had better quality in the last beta version
- written by Nicolas from france

That's all we have about that codec for now. Or did I miss anything?
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Old 3rd May 2003, 16:01   #15  |  Link
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This seems correct with the infos we have now. Maybe Nicolas didn't understand your question...

From Koepi (Translated by Me):

Ça a l'air vraiment intéressant. Pourais-tu svp nous donner des informations de plus comme

- Est-ce que le codec a été conçu pour archiver ou pour capturer (c-a-d a quel kbps il donne la meilleure qualité)
- Quel est sa vitesse? (c-a-d, est-ce qu'il fais du 720x576 a 20x la vitesse du temps réel (mouhahaha) ou c'est plus du 5 fps)

... et on continu!

Si on doit le tester, on doit savoir le "but" pour pouvoir te donner des commentaires pertinents.

Merci pour ton bon travail, lâche pas!

Meilleurs veux

Koepi
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Last edited by Sirber; 3rd May 2003 at 18:34.
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Old 3rd May 2003, 18:03   #16  |  Link
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Thanks for translating that Sirber, my french is _really_ rotten ( I can't even "decompress" most of your french abbreviations ) and additionally, our main language here is english so that everyone has the chance to understand things.

Merci beaucoup pour tous (even that looks wrong to me - I need a refresh-your-french-class it seems),

Koepi
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Old 3rd May 2003, 18:34   #17  |  Link
Sirber
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Merci beaucoup pour tout

no "s"

It means "Thanks a lot for all"
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Old 3rd May 2003, 18:46   #18  |  Link
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I know what I _want_ to write

I only missed the tout<->tous difference. So after all it's (EDIT: = my french) not way worse as it was after school

EDIT2: after reading this in english I think in german we're way shorter, here we just say "Danke für alles" - 3 words vs. 4 in french and 5 in english

Regards
Koepi

Last edited by Koepi; 3rd May 2003 at 18:48.
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Old 3rd May 2003, 23:43   #19  |  Link
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lol

I was just teasing
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Old 4th May 2003, 01:10   #20  |  Link
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"Thanks for everything" <-- 3 words in English
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