TV show episode thumbnail picture pixalated

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1

Hi All,

Hoping someone can help me with an issue I’m having with pixelated tv-show episode thumbnail pictures (see below). This only seems to affect tv shows where there isn’t official artwork available for each episode and it randomly displays a scene from that episode. It also does’t affect all episodes, though it seems random.

Screenshot displays fine
Format : Matroska
Format version : Version 4 / Version 2
File size : 6.32 GiB
Duration : 23 min 42 s
Overall bit rate mode : Variable
Overall bit rate : 38.2 Mb/s
Encoded date : UTC 2010-02-22 21:41:31
Writing application : mkvmerge v5.9.0 (‘On The Loose’) built on Dec 9 2012 15:37:01
Writing library : libebml v1.3.0 + libmatroska v1.4.0
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Muxing mode : Container profile=@0.0
Codec ID : V_MPEG4/ISO/AVC
Duration : 23 min 42 s
Bit rate mode : Variable
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Default : No
Forced : No

Screenshot pixalated (see picture below)
Format : Matroska
Format version : Version 4 / Version 2
File size : 5.67 GiB
Duration : 23 min 43 s
Overall bit rate mode : Variable
Overall bit rate : 34.2 Mb/s
Encoded date : UTC 2010-02-22 21:41:31
Writing application : mkvmerge v5.9.0 (‘On The Loose’) built on Dec 9 2012 15:37:01
Writing library : libebml v1.3.0 + libmatroska v1.4.0
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Muxing mode : Container profile=@0.0
Codec ID : V_MPEG4/ISO/AVC
Duration : 23 min 43 s
Bit rate mode : Variable
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Default : No
Forced : No

20190616_144232
20190616_1442323791×2194 4.23 MB

Thanks in advance!

2

I know this isn’t the answer for which you are hoping and maybe someone else will explain the mechanism of autocreating thumbnails but I was so fed up with this a few months ago that I created a TheTVDB account, uploaded missing episode pictures and added episode titles for some lesser known Scandinavian web drama series there myself. You not only help yourself by this but also others.

3

Can you remux the mkvs? Because

Muxing mode : Container profile=@0.0

is Strange normally it should be 4.1 or 4.2 with AVC.

4

Yeah, not the solution I wanted but got it fixed now. Thanks for the suggestion. At least others shouldn’t have the same issue.

5

Okay, good! How did you fix it? And what about Lostion’s suggestion?

6

I assume he just ran his files through MKVtoolNix to fix the bad containers.

7

Yes, I just used mkvtoolnix. I also added thumbnails to tvdb.

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