.MKV video track problems

[SwissBaker]

Hello,
I recently started watching video files on my television, yet sometimes it says "video codec not supported".
I kind of narrowed the problem down to this: all the mkv files have a video track that says "V_MPEG4/ISO/AVC"
The ones that are accepted have "[und]" at the end of that, the rejected ones "[eng]" or "[jpn]" or somesuch.

Could anybody tell me of a way to change the part between square brackets? Or something else that might solve it?

[Baldrick]

I guess it's something else like different h264/avc profiles/bframes/hd frame size. Post the full mkv details from mediainfo.

Or the mkv uses compressed headers(check it with mediainfo). Then remux the mkv with mkvtoolnix, first disable default compressed header under file->options, open the mkv, make a new mkv.

[aedipuss]

the things in the square brackets are the language of the file - [und]etermined, [eng]lish, [jap]anese. not anything to do with if they play or not.

[SwissBaker]

This is from a file that I am able to play
General
Unique ID : 198894003339273087966942894584513040020 (0x95A1977846A7D841AE4B64E3F7420E94)
Complete name : D:\Seen\Hyouka\[Commie] Hyouka - 01 The Revival of the Long-established Classic Literature Club.mkv
Format : Matroska
Format version : Version 2
File size : 311 MiB
Duration : 25mn 39s
Overall bit rate : 1 694 Kbps
Encoded date : UTC 2012-04-22 21:57:35
Writing application : mkvmerge v4.1.1 ('Bouncin' Back') built on Jul 3 2010 22:54:08
Writing library : libebml v1.0.0 + libmatroska v1.0.0
Attachment : Yes / Yes / Yes / Yes / Yes / Yes / Yes / Yes / Yes / Yes / Yes / Yes / Yes / Yes

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High 10@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 8 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 25mn 39s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Scan type : Progressive
Writing library : x264 core 123 r2184+681M 5d72658
Encoding settings : cabac=1 / ref=8 / deblock=1:1:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / fade_compensate=0.70 / psy_rd=0.80:0.20 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=12 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / fgo=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=18.0000 / qcomp=0.70 / qpmin=0 / qpmax=81 / qpstep=4 / ip_ratio=1.40 / aq=2:0.80
Language : English
Default : Yes
Forced : No

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : A_AAC
Duration : 25mn 39s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Title : Commie
Language : Japanese
Default : Yes
Forced : No

Text
ID : 3
Format : ASS
Codec ID : S_TEXT/ASS
Codec ID/Info : Advanced Sub Station Alpha
Compression mode : Lossless
Language : English
Default : Yes
Forced : No

Menu
00:00:00.033 : en:Intro
00:04:21.928 : en:OP
00:05:51.985 : en:Part A
00:14:49.956 : en:Part B
00:25:32.931 : en:Preview

[SwissBaker]

This is from one that I am unable to view
General
Unique ID : 183054665153475304653438204613807342802 (0x89B70BCDB9F5128091AE035D440084D2)
Complete name : D:\Seen\Persona 4\[Commie] Persona 4 - 01v2 [D13B7533].mkv
Format : Matroska
Format version : Version 2
File size : 258 MiB
Duration : 24mn 29s
Overall bit rate : 1 475 Kbps
Encoded date : UTC 2012-02-06 22:47:28
Writing application : mkvmerge v5.0.1 ('Es ist Sommer') built on Oct 9 2011 11:55:43
Writing library : libebml v1.2.2 + libmatroska v1.3.0
Attachment : Yes / Yes / Yes / Yes / Yes / Yes

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High 10@L5.0
Format settings, CABAC : Yes
Format settings, ReFrames : 16 frames
Muxing mode : Header stripping
Codec ID : V_MPEG4/ISO/AVC
Duration : 24mn 29s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Scan type : Progressive
Writing library : x264 core 118 r2085+614 d1cc25d
Encoding settings : cabac=1 / ref=16 / deblock=1:-1:-1 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / fade_compensate=0.80 / psy_rd=0.60:0.05 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=12 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / fgo=0 / bframes=10 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=19.0 / qcomp=0.80 / qpmin=0 / qpmax=81 / qpstep=4 / ip_ratio=1.40 / aq=2:1.00
Language : English
Default : Yes
Forced : No

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : A_AAC
Duration : 24mn 29s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Title : Commie
Language : Japanese
Default : Yes
Forced : No

Text
ID : 3
Format : ASS
Codec ID : S_TEXT/ASS
Codec ID/Info : Advanced Sub Station Alpha
Compression mode : Lossless
Default : Yes
Forced : No

Menu
00:00:00.033 : en:Intro
00:01:52.029 : en:OP
00:03:21.451 : en:Part A
00:14:43.816 : en:Part B
00:22:44.654 : en:ED
00:24:14.631 : en:Preview

[netmask56]

Most likely this is the problem

Format settings, ReFrames : 16 frames
Muxing mode : Header stripping

Try removing header stripping first and see if it plays you can use the latest version of MKVMergeGui for this as it has header stripping disabled by default and should only take minutes.

If the problem is too many ReFrames then you will have to re-encode at a lower figure like 8...

[SwissBaker]

Is the second one, says so at the top of the post

[johns0]

Format profile : High 10@L5.0,you also have to change the profile from 5.0 to 4.1 with tsmuxer and load it back into mkvmerge with head stripping unchecked.

[SwissBaker]

You've lost me, where does it say header stripping?
And the format thingy

[netmask56]

You've lost me, where does it say header stripping?
And the format thingy

Just install the latest version of MKVMergeGui and do a remux - it will copy the file out with a new name albeit (1) attached this will remove header stripping without you having to untick the box which you can find anyway under the tab "extra options" (drop down menu on this tab).

This will only take a few minutes to do and is worth doing before and if you have to really re-encode. You could be lucky Otherwise as johns0 posted

Format profile : High 10@L5.0,you also have to change the profile from 5.0 to 4.1 with tsmuxer

[SwissBaker]

The plain remux doesn't fix it unfortunately, and the tsmuxer keeps giving me an error
"Matroska parse error: invalid H264 NAL unit size. NAL unit truncated"
And nothing happens

[netmask56]

You could try PS3Muxer and tick the 4.1 box or maybe convert to MP4 with MKVtoMP4 ?

[ConverterCrazy]

I guess it's something else like different h264/avc profiles/bframes/hd frame size. Post the full mkv details from mediainfo.

Or the mkv uses compressed headers(check it with mediainfo). Then remux the mkv with mkvtoolnix, first disable default compressed header under file->options, open the mkv, make a new mkv.

Hi Baldrick,

I know you will say it's an old thread. But, MKVMerge gives "parser error in matroska file" and I can't "disable default compressed header" as you suggested.

I have many versions of MKVTools.
What version of MKVTools shall I use?

Thanks.

[netmask56]

Sorry to chime in but I think the latest version doesn't do compression by default, however you can ensure it doesn't by loading your file in and highlighting the video and going to extra options tab and selecting no compression. Then go back and highlight the audio track and select no compression then make the copy. done!

[ConverterCrazy]

Sorry to chime in but I think the latest version doesn't do compression by default, however you can ensure it doesn't by loading your file in and highlighting the video and going to extra options tab and selecting no compression. Then go back and highlight the audio track and select no compression then make the copy. done!

Thanks @netmask5 for the reply and you're welcome.

I think I chose a wrong thread. My problem is the video file plays normally under SMPlayer but not in PotPlayer Version 1.5.45955 -Beta!

But, if I want to extract audio/video by any tool or use MediaInfo, the messages I get are "Parser error in Matroska File" or "No tracks found"

There's a little problem in the video which I understand can be corrected by using MKVMerge. MKVMerge or Avidemux etc don't recognize the video as a valid file.