[Matroska-users] MKV File Problem (w/ MatroskaDiag log)

Ivan Kowalenko ivan.kowalenko at gmail.com
Sun Jun 11 16:14:25 CEST 2006


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On Jun 10, 2006, at 21.13, Dustin White wrote:

> Hi,
>
> I have trouble opening a MKV file after installing the Matroska  
> Pack 1.1.2.
> In Windows Media Player, I can only open the audio and not the video.
> Do you have any recommendations?
>
> Thanks,
> Dustin
>
> Matroska file info : C:\Program Files\BitComet\Downloads\GUNDAM  
> SEED Destiny SP1\[POPGO][GUNDAM_SEED_DESTINY][SPECIAL_EDITION_I] 
> [DVDRip](A738BF08).mkv
> File size : 716.88 MB
> File complete : yes
> Duration : 01:32:57.155
> Writing application : mkvmerge v1.6.5 ('Watcher Of The Skies')  
> built on Dec 7 2005 18:53:53
> Muxing application : libebml v0.7.6 + libmatroska v0.8.0
> Date : 2005-06-08 05:23:39.000
> Tracks : 2
> Track 1 : Video
>
> Codec : (V_MPEG4/ISO/AVC)
> Language : English (eng)
> Pixel Width : 704
> Pixel Height : 396
> Display Width : 16
> Display Height : 9

Well, there's probably your problem. Last I checked (which is,  
admittedly, a long time ago, but given M$'s track record...), WMP  
didn't support H.264 (A.K.A. AVC) natively. I see a "Nero Video  
Decoder" in there, but is that the Nero H.264 decoder? It's been ages  
since I've used Windows, so I'm genuinely unsure.

It's also possible that this was created with x264, an Open Sourced H. 
264 encoder, which supports many features of the H.264 spec that many  
commercial codecs, including Nero's and Apple's codecs, don't  
support. You might want to make sure this isn't the case.

Another problem might be the set Display Width and Display Heights.  
They're currently set for 16 and 9, respectively. My guess is that  
the aspect ratio is 16:9, but those parameters shouldn't be set like  
that. So, at the moment, looks like the decoder (if it's respecting  
those two settings) is outputting to 16 pixels by 9 pixels. Remuxing  
the file with a proper display resolution might fix it, assuming the  
codec isn't your problem. I could be wrong, though.
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