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channles/af wrong values

Posted: 20 Nov 2016, 17:43
by Pator
I have some videos wrongly renamed while using {channels}

I need to investigate further but I have one test case

ffmpeg says:

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Stream #0:1: Audio: aac (HE-AAC), 48000 Hz, 5.1, fltp (default)
mediainfo says:

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Channel(s)                               : 6
Channel(s)                               : 6 channels
Channel(s)_Original                      : 18
Channel(s)_Original                      : 18 channels
Channel positions                        : Front: L C R, Side: 15
Channel positions                        : 3/15/0
ChannelLayout                            : ? ? ? ?
filebot says:

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channels18.0
af18ch
The audio is in fact 5.1
ffmpeg is right.
mediainfo not sure. It looks as if it were saying the audio is now 6.0 and that it originally was 18.0
filebot is wrong. it is taking the original channels instead of the actual channels.

So we have here a mediaindo bug + a filebot bug?

Re: channles/af wrong values

Posted: 20 Nov 2016, 17:52
by rednoah
af and channels use the Channel(s)_Original and the ChannelPositions/String2 MediaInfo fields respectively.

Channel(s)_Original is sometimes different from Channel(s) and apparently the former is preferred. At least somebody requested that. I don't care either way, cause I have no idea which one is typically more correct. Probably depends on what specific file you're looking at.

You could ask about that in the MediaInfo forums. If 18 channels really makes no sense at all, then it's a MediaInfo bug.