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Old 28 Jun 2011, 11:40 PM   #1
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Default Mkv video file unknown and convert

Hi there,

I got two video's of 12+ gb which I would like to play on my led tv. I got a sharp Led tv 810 series which plays mkv. Now most of my mkv files work on my tv, I only needed to convert the audio from DTS to Ac3, so I do it with popcorn converter. But these two vid files which are also .Mkv don't play on my tv because it isn't able to play the video format.

So I would like to know how to find out what the video format is and if there is program which directly converts the video file within the mkv container without me needing to extraxt and merge the mkv file?
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Old 28 Jun 2011, 11:52 PM   #2
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Mediainfo should help you figure out just exactly what's in the MKV file:

http://www.digital-digest.com/software/mediainfo.html

There are some tools that can take in a MKV file and output a MKV file (of course, internally, it does all the things you normally do, like demux, convert, and the remux). I would normally probably use MeGUI, but VidCoder is a software that I've been using more and more lately (there's a link to a tutorial on the page below, if you need one):

http://www.digital-digest.com/software/VidCoder.html
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Old 29 Jun 2011, 09:52 PM   #3
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Hi thanks for the tools, only now I found out that all my video formats are AVC but some play and some don't on my tv. What could be the problem?
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Old 30 Jun 2011, 03:03 AM   #4
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It really depends on how the AVC/H.264 stream was encoded, and your TV most likely only supports a subset of the encoding features of the codec. In MediaInfo, under the video stream section, it should list some of the properties of the video stream (eg. "High@L4.1 (CABAC / 4 Ref Frames"), perhaps you can check if these properties differ, especially the "Level" rating (eg. 4.1 or 5.1). Also take note of the audio, which is most likely AAC, but make sure it's "LC" not "HC", which I suspect your TV won't support either.

If you want, you can post a screenshot of the MediaInfo details of the files that don't work.
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Old 11 Jul 2011, 09:58 PM   #5
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Here's a printscreen of mediainfo of a file that doesn't work and one that does..
Attached Thumbnails
Mkv video file unknown and convert-naamloos.jpg   Mkv video file unknown and convert-good-one.jpg  

Last edited by ProffesorX; 11 Jul 2011 at 10:06 PM Reason: extra info
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Old 11 Jul 2011, 10:56 PM   #6
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The left screenshot, is that the one that doesn't work?

If so, I suspect the "Header Stripping" may be what's causing the problem.

My recommendation would be to remux the MKV file and see what happens (it's only a remux, not a re-encode, so it shouldn't take too long). First, download and install the latest version of MKVToolnix, then download and run Popcorn MKV ReMuxer by loading your MKV file in, click on the save icon thing and set your output options (I use "Same directory as source" -> append "_OUT", which will save remux the MKV file with "_OUT" added to the filename, so it doesn't overwrite your original file), click on the "Run" button and now see if the file works on your TV or not.
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Old 16 Jul 2011, 10:29 AM   #7
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Thank you admin, you helped me alot
It was the headstripper indeed..
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Old 16 Jul 2011, 03:34 PM   #8
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Glad it worked out for you
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Old 19 Jul 2011, 01:12 PM   #9
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Your posts are really useful, it help me out of trouble.
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