Video plays without sound

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Video plays without sound Empty Video plays without sound

Post by olmarik Thu May 01, 2014 9:20 am

Hello, forummates.

I've got a problem with some videos. No sound in MPC-HC, that comes with pack, but WMP plays videos as usual, with sound. I'm using Mega version 10.4.4, because codecs for video editing are required. Tried to reinstall pack. Uninstaller reported about broken codecs, i chose to fix them all. Problem seemed to be solved, but soon returned again. Tried also rename mpc-hc.exe - had no effect. Noticed, that sound missing only if plays AC-3 soundtrack. Also MPC-HC crashes after closing sometimes. My OS Win7x64 SP1. I have no clue why the sound suddenly disappeared, I did not install and did not change any settings. Problem appeared after a month of normal use pack.

Thanks for taking the time to read this post. If you have any thoughts, please help.
olmarik
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Post by Admin Thu May 01, 2014 9:31 pm

Look at "Play > Filters" during playback. It should show either ffdshow or LAV audio decoder in that list.

Did you install any other software after the problem was fixed by the re-install of the codec pack?

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Post by olmarik Thu May 01, 2014 9:59 pm

Video plays without sound 64cabc10266f25add91881e18b1c78c8

No, I did not install any software. Ploblem appeared after 1-2 days of using package.
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Post by Admin Thu May 01, 2014 10:06 pm

Show me this log:
Codec Tweak Tool > Generate Log

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Post by olmarik Fri May 02, 2014 7:04 am

I remembered that 3-4 days before problem appearance i have installed update for the pack. And i reinstalled pack with the update installation second time.
Sorry, Admin, i did not notice your answer and reinstalled pack again but without an update. Everything seems to be ok. If problem will repeat again, i'll write here.

Thanks, Admin, for messing with me. Have a good day.
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Post by olmarik Sat May 03, 2014 7:29 am

Sound missing again.
Here's the log.
Log:

MPC again after closing outputs "MPC has crashed".
Also noticed invalid source filter in "Preferred splitters"

Video plays without sound Splitt10
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Post by Admin Mon May 05, 2014 4:19 pm

There seems to be a problem with the 32-bit DirectShow filters. A lot are missing.

Codec Tweak Tool > Fixes > Re-register Base DirectShow filters.
After that re-install the codec pack.

Did you install or use any other multimedia software just before the problem returned?

Did you disable User Account Control (UAC) in Windows? That can sometimes cause weird problems. I recommend installing the codec pack (and any other software) with UAC enabled. You can disable it again afterwards.

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Post by olmarik Mon May 05, 2014 6:03 pm

I used XmediaRecode to convert a video, VirtualDubMod to cut a video.
UAC is enabled. I always work with user account. And the above programs did not require admin privileges, thus I cannot understand how could it "break" codecs.
Here is graphs for the video that plays without sound. As I presume, those graphs should be the same, 64bit graph is correct.

Video plays without sound Graphs10

Does this mean that I will have to reinstall the pack when problem causes again? Thanks for the answer Smile
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Post by Admin Tue May 06, 2014 3:19 pm

Yes, you will have to re-install.

You have to figure out what is causing this problem. Test playback more frequently after doing other things.

Something is removing entries from this Registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Classes\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance

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Post by olmarik Thu May 08, 2014 5:37 pm

Thank you a lot, Admin  cheers
 
I've found the reason: ACDSee Pro 6.3. It does not run without administrative rights. After the granting required rights for some reason it spoils the above registry key. Fortunately, I made ​​a backup of this key after installation and successfully recover the pack.

Thanks once more again for the fast and pithy responses. Great health and happiness to you Very Happy
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Post by Admin Fri May 09, 2014 5:30 pm

Sound like ACDSee is very broken.

A good alternative image viewer that I can recommend is IrfanView.

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