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Odd "movie not playing" behaviour


techywarrior

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techywarrior

Got some weird issue with a few of the movies I just ripped. One works fine, the other two don't.

 

The movies that don't work all behave the same. In MBC and the web client the player(s) start and then immediately close.

 

movie doesn't work in MBC (player closes as soon as it opens)

movie doesn't work in web client (player closes once playback starts, not when transcoding starts)

movie WORKS if I play it in Media Player directly (with no sound)

movie WORKS in Win8 app

movie doesn't work if pushed to Xbox One via DLNA

 

You may notice that the non working movies have AC3 audio but I have lots of movies with AC3 audio and they all play fine.

 

Anyone have any ideas?

 

 

53b4d039502aa_mediainfo.jpg

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AdrianW

What container are these in - mp4? mkv?

 

If they're mp4 - then try just re-muxing into mkv. (AC3 has no business being inside an mp4 container)

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techywarrior

sorry, yes, mp4. My original post got accidentally deleted (my fault). All my other rips are m2ts and this was the first time I used mp4 instead.

 

Why shouldn't AC3 be in an mp4 container? It's just a container isn't it? I'm also not really familiar with the differences/benefits between AC3 and AAC. I seem to have about half of my movies in AC3 and half in AAC. Lol, don't ask why, I don't know either. I've ripped my 700+ movies 3 times over the years playing with different settings and formats.

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What container are these in - mp4? mkv?

 

If they're mp4 - then try just re-muxing into mkv. (AC3 has no business being inside an mp4 container)

I'm quite sure most devices in use today came after August 2008. Mp4 brought support for AC3 at that time, which is simply Dolby digital.

 

@@techywarrior ac3 is usually pass-thru which means your display has to support Dolby digital or Dolby digital plus.

 

http://www.dolby.com/us/en/technologies/dolby-digital-plus.html

 

Sent from my Nexus 7 using Tapatalk

Edited by speechles
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techywarrior

My computer is hooked up to a receiver via HDMI and also other movies with AC3 play fine. So not sure that's the reason. I'll do some remuxing/transcoding next week (going away for the holiday weekend) and see if that makes a difference. Mostly just curious why this is happening (if we can figure it out).

 

Haha, I think I'll be sticking to m2ts in the future since I've never had an issue with that container.

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AdrianW

It'd be worth trying muxing it into mkv - only takes about a minute.

 

Install mkvtoolnix - open mkvmergeGui, drag in the mp4 and click "Start Muxing".

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techywarrior

I'll try MKV as well, although I may stick with m2ts if both work since m2ts plays natively in Win7+ while MKV requires an additional codec.

 

But it will need to wait till I get back still have to pack and sleep before we drive tomorrow :)

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techywarrior

I converted all the mp4 files to m2ts and they all play fine now. Not really sure why the mp4 codec didn't like exact setup while the default m2ts codec handles it fine.

 

Not a big deal, just thought I was making it easier on myself with the mp4 not harder. lol

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I think it is just that mp4 and ac3 don't play well together since mp4 is designed for mobile platforms (primarily) which wouldn't have Dolby decoders.

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