Clipping issue with aac audio in videos from youtube.

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Clipping issue with aac audio in videos from youtube. Empty Clipping issue with aac audio in videos from youtube.

Post by 123459 Sun Sep 22, 2013 4:16 am

The problem first appeared in 9.9.0 mega.
9.8.5 mega and below works fine.

setup:
windows xp sp3,
internal nvidia sound card based on alc650 (16bit dac)

Looks like that the cause of the problem lies in mpc-hc 1.6.8.xxxx and above.

Tried MPC-HC.1.6.7.7036 and MPC-HC.1.6.7.7112 - no issue;

MPC-HC.1.6.8.7123 - tried different aac decoders - both lav and ffdshow - issue present, no matter how i change input and output sample formats in audio decoder settings.

When i use ac3filter as aac audio decoder AND decrease Gain to -20dB, then clipping is absent in any mpc-hc 1.6.8.xxxx, even mpc-hc 1.7.0.7805 works fine.

Spoiler:

123459

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Post by Admin Sun Sep 22, 2013 6:00 pm

The version of MPC-HC has no effect on how AAC audio is decoded, unless you are using its internal audio boost/normalize functionality,

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Post by Admin Sun Sep 22, 2013 6:04 pm

Which downloading tool are you using? Some tools fuck up the files.

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Post by Admin Sun Sep 22, 2013 6:11 pm

I have downloaded the same video, and I get no clipping.

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Post by 123459 Mon Sep 23, 2013 5:10 am

Admin wrote:The version of MPC-HC has no effect on how AAC audio is decoded, unless you are using its internal audio boost/normalize functionality,
where it can be found?
UPD: found it

what i did:

UPD: well, this is default setting for mpc-hc 1.7.0+  Clipping issue with aac audio in videos from youtube. Hem8l9B, checked it twice - in K-Lite_Codec_Pack_1005_Mega and in standalone http://nightly.mpc-hc.org/old/1.7.0.7805/MPC-HC.1.7.0.7805.x86.exe (i fully uninstalled codec pack along with the settings, before installing standalone player).

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Post by 123459 Mon Sep 23, 2013 5:40 am

Also, if you ever wondering, why i download videos from youtube:
i dont download them, i use mpc-hc together with http://www.svp-team.com/wiki/SVPtube/en because flash player's seeking controls are lacking.

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Post by Admin Mon Sep 23, 2013 8:29 pm

The boost slider should be all the way to the left. Now it is set to maximum volume boost.

If the slider is in that position even after resetting settings, it would mean there is some kind of weird bug in MPC-HC.

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Post by 123459 Tue Sep 24, 2013 11:27 pm

Admin wrote:If the slider is in that position even after resetting settings, it would mean there is some kind of weird bug in MPC-HC.
i checked on clean windows xp install(in vm) - boost slider is at 0%, what is correct.
So, error was only on my current setup - maybe settings persisted somewhere. Anyway, with your notice, i now fixed it.

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