[vlc] Re: Directshow Input - Blue Screen of Death

[Philip Mucci]

Hi folks,

For what it's worth, I had this exact sample problem with a fresh 
install of XP pro the latest driver download from Logitech. I never did 
solve it...the only way around it was to use the dshow-config option as 
Brian Wang found out. It was a Logitech Quickcam Express camera...

The driver was the latest rev, as was direct X. It looks like this isn't 
limited to Logitech products.

Here's my original message.
http://www.via.ecp.fr/via/ml/vlc/2005-04/msg00052.html

I wish I had known 0.7.2 worked...I would have used it! Now I have to 
wait till November to get back to Nepal to fix it.

Regards,

Phil



Benjamin Pracht wrote:
> On Fri, Jun 17, 2005, Brian Wang wrote :
> 
>>Hello all,
>>
>>I am trying to get my webcam working in VLC through the DirectShow 
>>input and keep getting the blue screen hard crash.
>>
>>Here is my findings, when doing [File] -> [Open Capture Device] -> 
>>[DirectShow]:
>>1. It works for the VLC 0.7.2 release version.
>>2. It works for VLC 0.8.0-test2.
>>3. It crashes for the VLC 0.8.0 release version and onwards, including the 
>>new vlc-trunk.
>>
>>Is it a known problem? What should I do to debug the problem? What is the 
>>"professional"
>>way of debugging VLC under M$ Windows?
>>I tried adding msg_Dbg() calls across dshow.c, putting delays after each 
>>call and cross
>>compiled it under my Linux box. How can I find out where it crashed?
>>However, it does not help much as I think the messages are queued up
>>before BSOD. The log file shows VLC has gone through the DirectShow device 
>>enumeration though.
>>
>>Here is some platform info:
>>1. Windows XP SP2 (Traditional Chinese version, if relevant)
>>2. Pentium III Mobile 1GHz with ATI Mobility Radeon AGP (Compaq Evo N410c).
>>The device tested is a USB webcam (UMAX AstraPix PC200).
>>3. VLC 0.8.0 and plus (VLC 0.7.2 works fine though)
>>4. Scenario: I presssed [Ctrl + C] to bring up the DirectShow dialog and 
>>pressed OK.
>>Then, the infamous blue screen appeared and a hard reset was required.
>>5. I can reproduce the problem every time. No exceptions.
>>
> 
> 
> Well, the only explanation I see is that a call to a certain function of the
> directshow API has been added between 0.8.0test2 and 0.8.0, that makes
> your drivers crash...
> 
> Try updating your webcam drivers first. If thta doesn't help, having a
> look at the commit messages archive could help find out the guilty call.
> 
> You can also use the logger interface, to see what debug message is
> printed right before the crash. That could help to find the guilty piece
> of code (but again, this is likely a driver issue)
> 

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