access violation error [updated with more info]

[joedan]

hi :)

i am using avisynth to frameserve to vdub and i keep getting this 'access violation while trying to read <hex value>'. its strange because i didn't used to get this error a couple days ago when i was using the same .d2v.

i have tried: creating a new .d2v, re-ripping the vobs, installing the latest avisytnth (2.5.3), defragging
but i always end up with this error.

does anybody know how to stop this error and why it keeps appearing?

thanks for your help :D

update:

i am using:
Decomb510.dll
MPEG2Dec3.dl
avisynth 2.5.3
vdub 1.5.4
dvd2avi 1.77.3

also, i just got this message:
An out-of-bounds memory access (access violation) occurred in module 'MPEG2Dec3'.

thanks for any info you can provide

[Wilbert]

I guess you didn't move the d2v file.

What version of mpeg2dec3.dll are you using?

[joedan]

what do you mean i didnt move the d2v file?

i am using v1.10 of mpeg2dec3.

this weird thing about this error is that the more i play around and test different files that have always worked fine, the more i feel like it has something to do with windowsxp

in any case its real annoying because i essentially can't do any encoding at all right now - it fails on everything!

[DDogg]

You may want to try Donald Graft's new matched set of dvd2avi and mpeg2dec3. DVD2AVIdg fix (http://neuron2.net/fixd2v/decodefix.html)

[joedan]

thanks for your help but i still get the same problem

this is definilty windows related :/ i cant perform a complete pulldown or wav>mp2 without crashing ...
if im not doing anything encoding-related im perfectly stable... stupid windows :angry:

[sh0dan]

Have you tested your system with Prime95?

Just search for it (here or Google).

[joedan]

whoa prime95 only ran for 3minutes before stopping due to an error.. i will try removing ram and let you know what happens

[vigi_lante]

Try to install a old version of AVISynth 2.5 (the first one)...review your script again too.

[Wilbert]

Is your system overclocked?

[sh0dan]

Sound like RAM or CPU problems.

@vigi_lante: His system isn't stable - what's the point?

[joedan]

my system is not overclocked.

i am running prime95 and removing different ram sticks - i will keep you guys updated and let u know if it leads to prime95 running as it should.

i have just run CPU stability test for 20hours without crash - when i got to my computer today it had rebooted - i assume it eventually crashed.

i hope this turns out just being a case of bad ram

if you can think of any other stress testing and/or hardware i should try to remove, let me know.

i wont have time to complete these tests until thursday so i will let you know then if removing a ram stick solved the instability issue.

[Boulder]

If you want to test the RAM only, use memtest86. That way you'll see if it's the memory sticks or something else.

http://www.memtest86.com/

[joedan]

thanks for that link Boulder.

i have run prime95 on each ram stick and it always fails after about 5 minutes.

i have now also gone through a couple passes of memtest86 without any errors.

so i guess that the problem is my cpu? are there any programs to verify this? cpu stability test is nice but it doesn't seem to give any information - it just runs until it crashes.

later this week i will try putting in an older spare cpu and i will let you guys know how it goes.

thanks for the help :)

[sh0dan]

(Redirecting to the Hardware forum)

I had a similar problem, but I had to replace the motherboard, as replacing the CPU didn't help.

[joedan]

ok so the other day i buy a new case, and i put my pc in it and.... now no problems?! :confused:

i can encode fine, no access violations, prime95 runs np...

wtf :confused: :confused: :confused: this doesn't make any sense but i'm glad everything is working smoothly again.

[Boulder]

New case = new power supply unit! (you probably don't get a case w/o a PSU unless you specifically ask for it)

Your older PSU probably wasn't up to the task. The more CPU cycles are spent, the more power is required to keep everything running smoothly and without odd crashes.

[joedan]

nono thats what im saying: the only thing different is the case! my whole pc (including powersupply) is the same! :confused:

this is so weird lol

[Boulder]

Then the only logical reason is that the air flows through this new case differently and keeps some component (most likely the CPU) cooler than in the previous one?