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| fccHandler |
| Posted: Feb 18 2012, 08:44 PM |
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Administrator n00b
Group: Moderators
Posts: 3961
Member No.: 280
Joined: 13-September 02
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Apparently the crash condition arises when all of the following are true:
- Color depth "AutoSelect" is configured (either explicitly or implicitly)
- You are using VirtualDub 1.9.11 or earlier
- You are opening a 4:2:0 MPEG-2 movie
Version 4.2 of the plugin returns the Rec. 709 version of the 4:2:0 colorspace in this case, which is WRONG because VirtualDub 1.9.11 doesn't know that colorspace. I have changed it to return kPixFormat_YUV420_Planar for backward compatibility. I expect this will fix the crashes:
http://fcchandler.home.comcast.net/Plugins/MPEG2
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May the FOURCC be with you... |
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| heustess |
| Posted: Feb 18 2012, 10:22 PM |
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Advanced Member
Group: Members
Posts: 67
Member No.: 21872
Joined: 5-August 07
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4.3 works for me in 1.9.11 and 1.10.1 in Windows 7. Good work!
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http://heustess.com/ |
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| jman |
| Posted: Feb 19 2012, 06:47 PM |
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Member
Group: Members
Posts: 12
Member No.: 34123
Joined: 26-January 12
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Yes, the 4.3 is working perfectly. 
Thank you very much fccHandler for fixing the problem
and thank you heustess for the contribution.
Keep up the good work!  |
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| heustess |
| Posted: Feb 19 2012, 07:25 PM |
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Advanced Member
Group: Members
Posts: 67
Member No.: 21872
Joined: 5-August 07
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I just tested the plugin (something that anyone can do) under different situations. All the credit for creating and fixing the plugin goes to fccHandler.
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http://heustess.com/ |
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| ^rooker |
| Posted: Feb 20 2012, 05:33 PM |
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Advanced Member
Group: Members
Posts: 36
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Unfortunately, v4.3 introduces ugly artifacts with some MPEGs (created with mencoder):
I've created 2 screenshots from the same MPEG source, with VirtualDub v1.9.11 and fcchandler's plugin v4.1 and v4.2:
(Sorry for the size, but I thought I'd keep the images as original/untouched as possible...)
MPEG2 plugin v4.1:
MPEG2 plugin v4.3:
This applies to both: 32bit and 64bit
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| jman |
| Posted: Feb 21 2012, 01:52 PM |
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Member
Group: Members
Posts: 12
Member No.: 34123
Joined: 26-January 12
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I have converted your MPEG sample to an XviD avi file with the plugin 4.1 & 4.3.
The two avi files are identical (same CRC32) and contains no artifacts.
Interesting... |
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| ^rooker |
| Posted: Feb 21 2012, 04:32 PM |
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Advanced Member
Group: Members
Posts: 36
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@jman:
The artifacts shown in the images appear while playing the MPEG in VirtualDub (or if stepping through, frame-by-frame)
If they are not visible on your setup, what could I check to see where they come from on my setup?
...or what has changed between v4.1 and v4.3 - because v4.1 works fine here.
Thanks for any hints! |
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| jman |
| Posted: Feb 21 2012, 08:00 PM |
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So only affects playback?
You may try to encode the video to other format.
Let's see if affects encoding too.
I couldn't notice any artifact during playback or advancing by one frame in VD. 
Maybe fccHandler or someone else will have a hunch. |
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| ^rooker |
| Posted: Feb 23 2012, 02:40 PM |
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Advanced Member
Group: Members
Posts: 36
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I've exported the video to FFv1 (lossless) using ffdshow-tryouts codec plugin:
Same artefacts in the resulting AVI.
Puzzling that with same fccHandler version + same VirtualDub version (1.9.11), you're not getting these artifacts...
I know I've said that it applies to 32+64bit, but right now, it only happens with the 64bit version.
Maybe it was my mistake the first time, because I had multiple VirtualDubs open... 
However, with 64bit the artifacts appear during playback and export. |
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| fccHandler |
| Posted: Feb 24 2012, 01:09 AM |
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Administrator n00b
Group: Moderators
Posts: 3961
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Joined: 13-September 02
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I was not able to reproduce this with the 32-bit plugin, but I have found one serious bug in the 64-bit code, and that bug would definitely cause artifacts. I am currently going over the rest of the 64-bit code with a fine-toothed comb to see if there are any other unpleasant surprises. Stay tuned...
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May the FOURCC be with you... |
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| fccHandler |
| Posted: Feb 25 2012, 02:54 AM |
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Administrator n00b
Group: Moderators
Posts: 3961
Member No.: 280
Joined: 13-September 02
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I fixed the decoding error in the 64-bit build. I made no changes to the 32-bit build, but I incremented its version number anyway for consistency:
http://fcchandler.home.comcast.net/Plugins/MPEG2
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May the FOURCC be with you... |
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| Gral |
| Posted: Feb 25 2012, 03:30 AM |
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Advanced Member
Group: Members
Posts: 125
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Joined: 11-July 04
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A very small typo on the page:
"This page was last updated February 26, 2012." ???
Tomorrow?
EDIT:
For me it's tomorrow, for you even day after...
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| fccHandler |
| Posted: Feb 25 2012, 05:52 AM |
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Administrator n00b
Group: Moderators
Posts: 3961
Member No.: 280
Joined: 13-September 02
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Good catch, thanks. The web pages are fixed now.
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May the FOURCC be with you... |
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| ^rooker |
 Posted: Feb 27 2012, 08:48 AM |
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Advanced Member
Group: Members
Posts: 36
Member No.: 20823
Joined: 7-February 07
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Wow, that was fast!
I've tried v4.4 with 64bit and the artifacts are gone. Everything's fine now.
Thank you very much!  |
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