>h.264< ? - Page 3

Ramirez · 5th January 2003, 18:59

I'm experiencing similar problem here, when I try
To decode an h.264 Avi file, my system simply shuts down.

I'll tray to encode a few frames later, using Tommy Carrot's Fast Settings.

SirDavidGuy · 5th January 2003, 19:04

Looked at the source (again).

Still no ME (other than FS), making it incredibly slow. Add that to multiple reference frames and 4th/8th/16th pel algorithms used, and it's bound to go incredibly slow.

Bulletproof · 6th January 2003, 06:32

How is the codec supposed to act when you try to use it? I think I set the config file properly, but when I try to encode a file in virtualdub it never shows the encoding panel, it just freezes the program.. unless its taking a really really really long time for the first frame, im on a 1.9ghz (actual speed) cpu.

Mango Madness · 6th January 2003, 08:25

yeah, the FPS on my 1.33ghz duron is about .0111 or rather 15 minutes PER FRAME.

HarryM · 6th January 2003, 08:34

I get 5 frames per minute(!) - full movie about 49 days encoding non-stop.
It's fantastic...

The first time I think, that PC frozen or Vdubmod crashed.

charact3r · 6th January 2003, 10:02

I am the developer of hdot264 and would love to find out how it performs. Unfortunately I only have a 733MHz machine so encoding's particularly slow. Eventually the code will be faster (and probably completely rewritten to achieve this) but this will only happen if people find that the codec performs better than, say DivX 5 Pro or xvid.

So try encoding at a lower resolution (like 320 x 200) and try DivX 5 at the same resolution and bitrate. Suggest encoding with hdot264 first as I don't know how to get an accurate bitrate/filesize with it yet. You can then set divx 5 to have same bitrate.

For decoding, if your computer can't decode using hdot264 in real time, use vdub to convert h264 to huffyuv so that you can watch in real time and compare to DivX.

If hdot264 really is much better than DivX or xvid then I'll work on making it faster. And btw, developers very welcome

Selur · 6th January 2003, 10:13

At least for me VirtualDub crashes when I try to scroll in the file I created,...
Woudl also be nice if you could give us some hints how to configure encoder and decoder cfg,...

Cu Selur

Ps.: What colorspaces does the codec support as input? (could be a reason for my file to be broken)

charact3r · 6th January 2003, 10:18

Quote:

Originally posted by Selur
At least for me VirtualDub crashes when I try to scroll in the file I created,...

The best thing to do is to dub again from h264 to an uncompressed format for ease of playback. The codec does not support seeking.

Quote:

Woudl also be nice if you could give us some hints how to configure encoder and decoder cfg,...,...

These are the same files as used by the JVT software. I don't really know how to use them. Perhaps someone else can enlighten us?

Quote:

Ps.: What colorspaces does the codec support as input? (could be a reason for my file to be broken)

Same as xvid (xvid code used under GPL for VfW codec).

Selur · 6th January 2003, 10:24

Thx for the info,..

Another question:

Are the quantizer settings kind of equivalent to the one used in Xvid and go,.. ? (though the default settings of 30&31 are not the best settings for quality comparison?)

Cu Selur

/edit
Virtual Dub conversion (off the hdot264 file to huffyuv)just crashed with because of a division by Zero,.. I'll encode another file later and do some testing with it,.. (hopefully)
edit/

charact3r · 6th January 2003, 10:32

Look at the following link for reference code (hdot264 uses jm40-ish) and for specification of h.264. I'm not sure how up-to-date the docs here are, if you find a more recent version, please put a link here.

http://bs.hhi.de/~wiegand/JVT.html

So you can read how h.264 quantisation works in the documentation. I think it's a bit more complicated than MPEG-4 quant.

edit: best thing to do is to try hdot264 with the default settings and see what bitrate it comes up with. Then try to match this bitrate with constant q divx/xvid and compare quality.

Selur · 6th January 2003, 10:38

okay,.. will read it later,..
thx for the info

Cu Selur

edit:
" best thing to do is to try hdot264 with the default settings and see what bitrate it comes up with. Then try to match this bitrate with constant q divx/xvid and compare quality." Okay,.. I'll try that.

gino25 · 6th January 2003, 16:45

I' ve compiled a old version but the results are very impressive. Thnks to all

@charact3r
Why don' t you use a jm 50?

Selur · 6th January 2003, 17:02

just converted a small clip (used default encoder.cfg) and copied the decoder.cfg to C:\ otherwise Virtual Dub didn't want to open the file, but whenever I now try to convert thw h264 file to HuffYUV, Xvid,.. VirtualDub crashs because of a division by zero,...

Cu Selur

charact3r · 6th January 2003, 17:18

Quote:

Originally posted by gino25
I' ve compiled a old version but the results are very impressive. Thnks to all

@charact3r
Why don' t you use a jm 50?

I decided not to try to keep up with the jm versions because that alone would take all my time. Also don't really want to invest too much time in hdot264 until I'm happy that it will be better than DivX and xvid.

How impressive were the results???

vinetu · 6th January 2003, 21:16

Quote:

just converted a small clip (used default encoder.cfg) and copied the decoder.cfg to C:\ otherwise Virtual Dub didn't want to open the file, but whenever I now try to convert thw h264 file to HuffYUV, Xvid,.. VirtualDub crashs because of a division by zero,...

Same here ...

I'm unable to see my 200 frames "rip"...
(speed -P4 @ 2.4GHz - 128x128 avi,200 frames for 4min)

Tommy Carrot · 6th January 2003, 21:49

Quote:

Originally posted by charact3r
I decided not to try to keep up with the jm versions because that alone would take all my time. Also don't really want to invest too much time in hdot264 until I'm happy that it will be better than DivX and xvid.

How impressive were the results???

You can find some opinions about h.264 on the above mentioned thread. As you can see, i was rather impressed with the quality. At mid/low/very low bitrates it is _much_ better than xvid/divx. I'm not sure about high bitrates, i've not tested the encoder under quant 20, but i guess it can stand there too. Anyway, definetaly better than the current codecs, just horribly slow, and i cannot decode it other way than converting the yuv file to avi.

BTW, with the most brutal settings, the encoding is still ~40 sec/frame

at 720X384 on my athlonXP 1700. Something is wrong, if you get 5 min/frame. With some tweaking in the config, the encoding can easily reach the 0.3 frame/sec at that resolution.

Tommy Carrot · 6th January 2003, 21:52

Quote:

Originally posted by vinetu
Same here ...

I'm unable to see my 200 frames "rip"...
(speed -P4 @ 2.4GHz - 128x128 avi,200 frames for 4min)

Try to search something like yuv2avi (e.g.: in the old topic). With that, you can convert the yuv file in the target directory to uncompressed avi.

Selur · 6th January 2003, 21:58

Thx for the tip, I'll try, here a link to the thread for others who might search:
http://forum.doom9.org/attachment.php?s=&postid=174083

/edit
yuvtoavi did the job for me => tomorrow I'll encode some test smaples with different encoder settings

edit/

Cu Selur

Alex_e_Basta · 6th January 2003, 23:47

Hi all

I compiled the CVS version from SF.net and I made some tests : Divx vs H264 and Xvid vs H264.
I encoded 20 frames from PH using Avisynth 2.5 & VDub 1.4.13.1,Quality based 100% and no B frames; my script

LoadPlugin("c:\vdub_yv12\MPEG2Dec3.dll")
mpeg2source("C:\Avisynth\Prove\PH.d2v")
trim(0,19)
crop(0,72,720,432)
BicubicResize(720,304,0,0.75)

Then I switched back to Avisynth 2.07 and I compared dimensions and psnr of all encoded clips.

Codec _________ KB ____ Psnr __ Delta KB %___ Delta PSNR (DB)

Divx Qb100% ___ 694 ___ 39.81___0.00_________ 0.00
Xvid Qb100% ___ 674 ___ 39.64__ -2.88________ -0.17
Xvid Quant=1 _ 1410 ___ 40.64__ 103.17________ 0.83
H264 10-19 ____ 538 ___ 39.87_ -22.48_________ 0.06
H264 08-17 ____ 680 ___ 40.23__ -2.02_________ 0.42

As you can see, at nearly the same psnr(H264 quant 10-19), H264 gains 22.28% in KB vs Divx and at the same dimension as Divx (H264 quant 8-17) it gains 0.42 DB of psnr.
I think that these results are very impressive either in quality or in compression and I hope the good work will continue.

Bye
Alex

DVD__GR · 7th January 2003, 00:11

Really impressive..is it possible for the author to make it some more user friendly for us to test it??
I'm sure that many would like to test,its really usefull to get the answer if its worth it or not?

5th January 2003, 19:04	#42 \| Link
SirDavidGuy Flying Attack Donkey Join Date: Mar 2002 Posts: 159	Looked at the source (again). Still no ME (other than FS), making it incredibly slow. Add that to multiple reference frames and 4th/8th/16th pel algorithms used, and it's bound to go incredibly slow. __________________ "Bork Bork Bork"

6th January 2003, 10:02	#46 \| Link
charact3r Registered User Join Date: Oct 2002 Posts: 33	hdot264 I am the developer of hdot264 and would love to find out how it performs. Unfortunately I only have a 733MHz machine so encoding's particularly slow. Eventually the code will be faster (and probably completely rewritten to achieve this) but this will only happen if people find that the codec performs better than, say DivX 5 Pro or xvid. So try encoding at a lower resolution (like 320 x 200) and try DivX 5 at the same resolution and bitrate. Suggest encoding with hdot264 first as I don't know how to get an accurate bitrate/filesize with it yet. You can then set divx 5 to have same bitrate. For decoding, if your computer can't decode using hdot264 in real time, use vdub to convert h264 to huffyuv so that you can watch in real time and compare to DivX. If hdot264 really is much better than DivX or xvid then I'll work on making it faster. And btw, developers very welcome

6th January 2003, 10:24	#49 \| Link
Selur Registered User Join Date: Oct 2001 Location: Germany Posts: 7,277	Thx for the info,.. Another question: Are the quantizer settings kind of equivalent to the one used in Xvid and go,.. ? (though the default settings of 30&31 are not the best settings for quality comparison?) Cu Selur /edit Virtual Dub conversion (off the hdot264 file to huffyuv)just crashed with because of a division by Zero,.. I'll encode another file later and do some testing with it,.. (hopefully) edit/ Last edited by Selur; 6th January 2003 at 10:36.

6th January 2003, 10:32	#50 \| Link
charact3r Registered User Join Date: Oct 2002 Posts: 33	Look at the following link for reference code (hdot264 uses jm40-ish) and for specification of h.264. I'm not sure how up-to-date the docs here are, if you find a more recent version, please put a link here. http://bs.hhi.de/~wiegand/JVT.html So you can read how h.264 quantisation works in the documentation. I think it's a bit more complicated than MPEG-4 quant. edit: best thing to do is to try hdot264 with the default settings and see what bitrate it comes up with. Then try to match this bitrate with constant q divx/xvid and compare quality. Last edited by charact3r; 6th January 2003 at 10:37.

6th January 2003, 10:38	#51 \| Link
Selur Registered User Join Date: Oct 2001 Location: Germany Posts: 7,277	okay,.. will read it later,.. thx for the info Cu Selur edit: " best thing to do is to try hdot264 with the default settings and see what bitrate it comes up with. Then try to match this bitrate with constant q divx/xvid and compare quality." Okay,.. I'll try that. Last edited by Selur; 6th January 2003 at 10:43.

5th January 2003, 18:59	#41 \| Link
Ramirez Registered User Join Date: Oct 2002 Location: Israel Posts: 371	I'm experiencing similar problem here, when I try To decode an h.264 Avi file, my system simply shuts down. I'll tray to encode a few frames later, using Tommy Carrot's Fast Settings.

6th January 2003, 06:32	#43 \| Link
Bulletproof Registered User Join Date: Jan 2002 Posts: 318	How is the codec supposed to act when you try to use it? I think I set the config file properly, but when I try to encode a file in virtualdub it never shows the encoding panel, it just freezes the program.. unless its taking a really really really long time for the first frame, im on a 1.9ghz (actual speed) cpu.

6th January 2003, 08:25	#44 \| Link
Mango Madness Registered User Join Date: Sep 2002 Posts: 132	yeah, the FPS on my 1.33ghz duron is about .0111 or rather 15 minutes PER FRAME.

6th January 2003, 08:34	#45 \| Link
HarryM Registered User Join Date: May 2002 Location: Czech rep. Posts: 390	I get 5 frames per minute(!) - full movie about 49 days encoding non-stop. It's fantastic... The first time I think, that PC frozen or Vdubmod crashed.

6th January 2003, 10:13	#47 \| Link
Selur Registered User Join Date: Oct 2001 Location: Germany Posts: 7,277	At least for me VirtualDub crashes when I try to scroll in the file I created,... Woudl also be nice if you could give us some hints how to configure encoder and decoder cfg,... Cu Selur Ps.: What colorspaces does the codec support as input? (could be a reason for my file to be broken)

6th January 2003, 16:45	#52 \| Link
gino25 Registered User Join Date: Dec 2002 Posts: 165	I' ve compiled a old version but the results are very impressive. Thnks to all @charact3r Why don' t you use a jm 50?

6th January 2003, 17:02	#53 \| Link
Selur Registered User Join Date: Oct 2001 Location: Germany Posts: 7,277	just converted a small clip (used default encoder.cfg) and copied the decoder.cfg to C:\ otherwise Virtual Dub didn't want to open the file, but whenever I now try to convert thw h264 file to HuffYUV, Xvid,.. VirtualDub crashs because of a division by zero,... Cu Selur

6th January 2003, 21:58	#58 \| Link
Selur Registered User Join Date: Oct 2001 Location: Germany Posts: 7,277	Thx for the tip, I'll try, here a link to the thread for others who might search: http://forum.doom9.org/attachment.php?s=&postid=174083 /edit yuvtoavi did the job for me => tomorrow I'll encode some test smaples with different encoder settings edit/ Cu Selur Last edited by Selur; 6th January 2003 at 23:11.

6th January 2003, 23:47	#59 \| Link
Alex_e_Basta Registered User Join Date: Apr 2002 Posts: 18	Hi all I compiled the CVS version from SF.net and I made some tests : Divx vs H264 and Xvid vs H264. I encoded 20 frames from PH using Avisynth 2.5 & VDub 1.4.13.1,Quality based 100% and no B frames; my script LoadPlugin("c:\vdub_yv12\MPEG2Dec3.dll") mpeg2source("C:\Avisynth\Prove\PH.d2v") trim(0,19) crop(0,72,720,432) BicubicResize(720,304,0,0.75) Then I switched back to Avisynth 2.07 and I compared dimensions and psnr of all encoded clips. Codec _________ KB ____ Psnr __ Delta KB %___ Delta PSNR (DB) Divx Qb100% ___ 694 ___ 39.81___0.00_________ 0.00 Xvid Qb100% ___ 674 ___ 39.64__ -2.88________ -0.17 Xvid Quant=1 _ 1410 ___ 40.64__ 103.17________ 0.83 H264 10-19 ____ 538 ___ 39.87_ -22.48_________ 0.06 H264 08-17 ____ 680 ___ 40.23__ -2.02_________ 0.42 As you can see, at nearly the same psnr(H264 quant 10-19), H264 gains 22.28% in KB vs Divx and at the same dimension as Divx (H264 quant 8-17) it gains 0.42 DB of psnr. I think that these results are very impressive either in quality or in compression and I hope the good work will continue. Bye Alex

7th January 2003, 00:11	#60 \| Link
DVD__GR Registered User Join Date: Jul 2002 Location: GREECE Posts: 100	!!! Really impressive..is it possible for the author to make it some more user friendly for us to test it?? I'm sure that many would like to test,its really usefull to get the answer if its worth it or not? Last edited by DVD__GR; 7th January 2003 at 00:19.