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Perenista
15th October 2016, 15:24
I am having an odd problem here.

I have a video with multiple tracks, it's a Matroska lossless from a Blu-ray I own. All tracks are OK, except for one, which becomes silent, but it's only silent in the iPAD (in both Infuse and nPlayer), not in the PC.

In the PC, the track can be heard just fine.

This is the track with a problem:
https://mega.nz/#!pUdXwaIJ!Fe9YP3ffLY-SGp7ACHvJl9Zt0wbND_1hT1DlNu9LuLY

(Please download and try to analyse. I suggest trying to play in the iPAD by using any player, VLC, nPlayer or Infuse)

Info about the MKV:
http://pastebin.com/esxSaYis

As you can see from pastebin, Audio #4 is the culprit. All the others are OK, just this one is having an issue.

Perhaps I could fix this by reencoding the AC3 file. But I don't want to do this before understanding why this is happening.

Is it because the track presents itself with an odd technical trait?

tebasuna51
16th October 2016, 01:40
Decoding the file with eac3to show multiple errors:

libav Warning: new rematrixing strategy not present in block 0
...

and the output is empty. The same with ffmpeg.

But NicAudio can decode the track with BeHappy or MeGUI, and can be recoded.