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Old 6th December 2005, 13:14   #161  |  Link
bond
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Quote:
Originally Posted by quake74
Yeah, his latest. I only changed the parameters I mentioned.
well his profile is made for ensuring that playback on the psp works. if you change the parameters you shouldnt be surprised that it suddenly doesnt work...
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Old 6th December 2005, 13:23   #162  |  Link
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Quote:
Originally Posted by bond
well his profile is made for ensuring that playback on the psp works. if you change the parameters you shouldnt be surprised that it suddenly doesnt work...
I'm not surprised that some options do not work, I am surprised that some options (like 4 bframes) DO work. If we get confirmation that this is indeed true for other psp and video as well, then sharktooth could update his profile.
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Old 6th December 2005, 17:17   #163  |  Link
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it's likely you had "adaptive" checked and 4 b-frames were never used.
to see if it works uncheck adaptive b-frames and re-encode with 4 b-frames.

Last edited by Sharktooth; 6th December 2005 at 18:34.
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Old 6th December 2005, 18:35   #164  |  Link
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Quote:
Originally Posted by Sharktooth
4 b-frames doensnt work. it's likely you had "adaptive" checked and 4 b-frames were never used.
Yes, I was using the adaptive bframes (along with 2ref frames but no mixd ref)
but I still think it has 4 bframes in there. The only way I know of counting the bframes is opening the file in MPC and let ffmpeg print the frame type on the OSD and go frame by frame. I looks to me that around frame 474-477 and around 1078-1081 I have seen two sequences of 4 bframes. The file is http://rapidshare.de/files/8726733/maq10302.mp4.html

Last edited by quake74; 6th December 2005 at 18:39.
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Old 6th December 2005, 18:41   #165  |  Link
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remember if you use the standard b.frame bias and adaptive b.frame, x264 rarely uses more than 3 b.frames.
however i'm downloading your clip an will check it.

EDIT: Yes, the clip has indeed 4 b-frames sequences. Are you sure you do not experience frame skips during playback?
however the psnr gain moving from 3 to 4 bframes is not significative and maybe negative.

Last edited by Sharktooth; 6th December 2005 at 18:50.
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Old 6th December 2005, 19:01   #166  |  Link
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Quote:
Originally Posted by Sharktooth
remember if you use the standard b.frame bias and adaptive b.frame, x264 rarely uses more than 3 b.frames.
however i'm downloading your clip an will check it.

EDIT: Yes, the clip has indeed 4 b-frames sequences. Are you sure you do not experience frame skips during playback?
however the psnr gain moving from 3 to 4 bframes is not significative and maybe negative.
No, I'm not sure that I do not experience frame skips: the screen is small, I used changefps(29.97), and I am rather tired . You can download the orginal trailer from http://trailers.divx.com/Universal/Doom_HD.zip and check yourself if you want. Anyway, I'd rather have opinions from other people. Moreover, can you (or anybody else) confirm that 2refs and 3bframes with mixed refs works? (If you repaired your psp )
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Old 6th December 2005, 19:05   #167  |  Link
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No, still unrepaired.
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Old 6th December 2005, 20:45   #168  |  Link
bond
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Quote:
Originally Posted by quake74
Yes, I was using the adaptive bframes (along with 2ref frames but no mixd ref)
but I still think it has 4 bframes in there. The only way I know of counting the bframes is opening the file in MPC and let ffmpeg print the frame type on the OSD and go frame by frame. I looks to me that around frame 474-477 and around 1078-1081 I have seen two sequences of 4 bframes. The file is http://rapidshare.de/files/8726733/maq10302.mp4.html
i get jumpy playback with this sample (not very often, but its there)

sharktooth: ?
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Old 6th December 2005, 21:51   #169  |  Link
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@bond: my PSP is still broken so i cannot do tests for PSPs.
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Old 7th December 2005, 00:09   #170  |  Link
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Quote:
Originally Posted by Sharktooth
@bond: my PSP is still broken so i cannot do tests for PSPs.
i meant do you get jumpiness on your pc?
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MPEG-4 ASP FAQ | AVC/H.264 FAQ | AAC FAQ | MP4 FAQ | MP4Menu stores DVD Menus in MP4 (guide)
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Old 7th December 2005, 00:23   #171  |  Link
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oh.. i thought you were trying on a PSP
i didnt notice it.. but ill deeply check it later.

EDIT: does not "jump" here...

Last edited by Sharktooth; 7th December 2005 at 01:22.
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Old 8th December 2005, 21:21   #172  |  Link
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First, thanks to Sharktooth so much for these profiles! It helps so much, because of the crazy number of options the codec has.

A quick question to anyone on CE-Mainprofile and Quicktime. It says in the first post that CE-Mainprofile is not compatible, but I just encoded something using it and it played it in QTPlayer successfully (7.0.2). Should I be safe, or should I be worried about it not playing on Macs for instance? Mainprofile seems like better quality, so it'd be neat to be able to use that instead of CE-QT if I can.

It just seems strange to me that the profile specifically says it isn't compatible when my first try with it was fine. Maybe I just got lucky?

Shawn
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Old 9th December 2005, 11:18   #173  |  Link
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maybe I overlooked it,..

Is there a table/list/.. that shows what features/settings are en-/disabled / used in the profiles? (something like a overview ?)

Cu Selur

Ps.: I know I could examine the xml files,.. a little overview would be nice.
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Old 9th December 2005, 13:01   #174  |  Link
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Ok, after further concentrated effort I can confirm the Xbox can decode atleast 720x304 resolution Nero AVC + 2CH AC3 inside an MKV file. Settings used:

(GENERAL SETTINGS)
Decision quality: High Quality (maximum)
Maximum vector range: -512 to 511.75
Maximum reference frames: 3
Maximum GOP size: 300
Maximum B-frames: 3

(ENCODING TOOLS)
CABAC: Yes
Bidirectional prediction: Yes
Macroblock partitions: No
Weighted prediction: No
Deblocking: Yes (=0)

(VISUAL ENHANCEMENTS)
Source material: Chroma optimization
Psycho-visual enhancements: Disabled

What would be the equivalent to all of these settings^ in x264? Maybe it would be possible to play the same file 720x304 resolution x264 if similar settings were used.

Additionally it is impotant to use these cache settings for smooth playback:

Video/Audio/DVD Cache - harddisk 4096 KB
Video Cache - DVDRom 8192 KB
Audio Cache - DVDRom 256 KB
DVD Cache - DVDRom 4096 KB

ALL OTHER PARAMETERS 0 KB

And also, this is very important -- enable Smoothed A/V synchronization. It is disabled by default.
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Old 9th December 2005, 15:00   #175  |  Link
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... almost the settings you can find in the xbox low-res profile except macroblock partitions and weighted prediction

Last edited by Sharktooth; 9th December 2005 at 15:02.
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Old 9th December 2005, 19:56   #176  |  Link
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V15:
updated AE-Maxquality, CQ-ASP_Q2 (both), HQ-Insane, HQ-Slowest and PD-Xbox (both) with No Fast P Skip option.
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Old 10th December 2005, 05:24   #177  |  Link
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Quote:
Originally Posted by Sharktooth
... almost the settings you can find in the xbox low-res profile except macroblock partitions and weighted prediction
Do you think a file I make using 720x304 minus the macroblock and weighted prediction will work on the Xbox? - edit: didn't work*

I digress a bit, but I've noticed my source has got deliberate grain, which looks to me is getting rather smooth and noticeably blocky in others. Deblocking doesn't have this effect does it? Interestingly I noticed in the Nero AVC encode, that Limobar did, the detail is kept in that particular part grainy part of the video. It's significantly closer to the original I believe. Both files used about the same encoding settings. - edit: jumped the gun with this comment, x264 looks fine at similar encoding settings as Nero.

*Ok, I tried again to encode at 720x304. I used PD-Xbox_LoRes, but dropped Weighted Prediction. I'm not sure where the Macroblock option is though. I also changed Minimum Quantizer to 14 to keep my bitrate at around 1950kbps+. Muxed with AC3 in an MKV after. Frame rate is like 10-17 fps and there are dropped frames on Xbox.

Last edited by Backflip; 10th December 2005 at 13:37.
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Old 10th December 2005, 15:03   #178  |  Link
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Well, Xbox cant do miracles...
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Old 10th December 2005, 15:44   #179  |  Link
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Thanks Sharktooth, very helpful. ^^
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Old 10th December 2005, 20:41   #180  |  Link
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V16: fixed CQ-ASP_Q2_equiv. Had quantizer 26 instead of 18 (dont ask me why!).
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