xvid playback problem

[george_zhu]

I have encoded some video by xvid 1.0-RC 2-pass. The configuration is 480*480 interlaced, GMC, QPel, 2Bfram, packed b stream. The bitrate was set 1200kbps for one and 2000kbps for the other. Those two can only be play back in the Media Player Classic 6.4.7.6. They show huge amount of blocks in WMP9 or WMP(mplayer2). Is that normal? (I do have encoded a lot of 320x240 progressive video with similar option except the interlace option. All of them play back smoothly with all the media players. )

Another weird thing is that it shows "DivX" watermark when it plays. I think that suggest it use the divx decoder, isn't it? I select "Xvid" in the FourCC option in debug tab.

[Koepi]

I fear you have messed up your system. I don't know the level of your skills - so I think it would be easiest to install your computer from scratch, only the software you need. As described in the FAQ, don't install codec packs.

Not much more i can think of right now

Regards
Koepi

[Alxemi]

As described in the FAQ, don't install codec packs.

I agree, but when the faq was written, Matroska Playback Pack didn´t exist... :) I think it can´t do any harm and it is a good election as a general playback solution, wether if you know what you are installing or not.

[celtic_druid]

Untick the DivX generic MPEG4 option and make sure that the XviD dshow decoder is properly registered.

[george_zhu]

Well. I think my skill level now is not too bad. I have only installed a few decoder codecs explicitly after I assamblied this computer and installed the OS. That is DviX, Xvid and ffdshow, huffyuv, picmjpeg. I uninstalled ffdshow later since it failed to play Xvid video I made. While the last two are more or less irrelevant I think. I never installed any other codec pack. I checked the configuration and find I also has MS mpeg4 codec. Will that affact?

I checked the

Originally posted by Koepi
I fear you have messed up your system. I don't know the level of your skills - so I think it would be easiest to install your computer from scratch, only the software you need. As described in the FAQ, don't install codec packs.

Not much more i can think of right now

Regards
Koepi

[sysKin]

Originally posted by george_zhu
Another weird thing is that it shows "DivX" watermark when it plays. This means that DivX decoder is used. Normally DivX decoder works (but, at least with 5.0.3, you have to uncheck "smooth playback" for more than one b-frame), but it does not support interlaced video - so you get the ugly blocks.

Find out if you can disable DivX decoder for xvid content - either ffdshow or xvid's decoder will work, but other decoders don't support interlaced mpeg-4 (they should, they are not ASP compiliant btw...).

Radek

[george_zhu]

How to disable it?

Sometimes there is no DivX watermark, so DivX decoder should not work that time. But the picture is still no good. //sigh
I am also wondering wether it is the encoder's fault or decoder's.


Originally posted by sysKin
This means that DivX decoder is used. Normally DivX decoder works (but, at least with 5.0.3, you have to uncheck "smooth playback" for more than one b-frame), but it does not support interlaced video - so you get the ugly blocks.

Find out if you can disable DivX decoder for xvid content - either ffdshow or xvid's decoder will work, but other decoders don't support interlaced mpeg-4 (they should, they are not ASP compiliant btw...).

Radek

[sysKin]

Originally posted by george_zhu
How to disable it?

Sometimes there is no DivX watermark, so DivX decoder should not work that time. But the picture is still no good. //sigh
I am also wondering wether it is the encoder's fault or decoder's. I don't know how to disable it, my most recent divx is 5.0.3 and it doesn't even try decoding xvid.
As for the examples of DivX not used - both 3vix and nerodigital decoders like to decode xvid content. I don't know if any of them supports interlaced video, but I do know that 3vix does not seem to decode b-frames.

[celtic_druid]

http://druid1.netfirms.com/divx.gif

[george_zhu]

Please look at my update in this thread (http://forum.doom9.org/showthread.php?s=&threadid=69912)

[george_zhu]

I have put a short clip on web (http://www.ews.uiuc.edu/~gzhu1/test.zip). The original one (test.avi) is the one I got from capture card with Pic MJPG 18. ( I recompressed the 19 one to make it smaller). The testxvid.avi is the one with no GMC on. While the testxvidgmc.avi is the one with GMC on. The xvid file is the one I am using to encode and decode.


I failed to play any of the encoded file until I uninstalled xvid1.0RC1 and reinstalled it again. The testxvidgmc.avi always crash my player, while the testxvid.avi can play but crash my explorer.

Maybe you can try to encode it yourself and see the difference.

Thank you for your help.

[Koepi]

george,

don't cross post. don't make up a new thread for every tiny thing on your way to the video encoding world.

Posting 2 times the same thing is usually a reason to strike a user.

Please don't do that again.

Koepi

[Happygolucky]

Originally posted by Koepi
I fear you have messed up your system. I don't know the level of your skills - so I think it would be easiest to install your computer from scratch, only the software you need. As described in the FAQ, don't install codec packs.

Not much more i can think of right now

Regards
Koepi

I hope you were kidding when you wrote this. The latest Divx codec will override any Xvid codec you have installed unless you go to the Divx Codec Configuration and uncheck the "Support Generic Mpeg-4" box, which is checked by default on install. Only then will the Xvid codec be used for decoding. This feature actually came in handy for me when I had a file that was encoded with Xvid, but trying to play it (in any player) caused that player to crash. Enabling the Divx codec override the Divx codec played the file just fine.

[george_zhu]

It has been solved. The video has been pulled from the web. Please see the update in the thread (http://forum.doom9.org/showthread.php?s=&postid=439092#post439092)