Problems with .mkv 8x8dct=1


#1

Hi!

I´ve got problems playing some mkv files.

Some of them are playing just fine; but lots have extreme problems. it seems, as if the codec wouldnt work because the picture shows very big pixels. I´m not talking about some some few pixels; the whole picture looks “broken”.

After analysing the files using AVInaptic i´ve tried to compare a fine working mkv with the not-working-ones.

The only difference i´ve found is, that all not-playing-files have the 8x8dct set to 1 (the working one is 0).

I´ve tried all outputformats of the box; looks all the same.

I´m using Firmware 1.10.24 (the Beta-Version 1.02.14 shows the same error); the error appears over network AND USB-Storage in the same way.

The “broken” image appears on HDMI and Component; so its not a failure of the TV (tested on Flat and old-school TV).

Any Suggestions what to try?

Best regards

Andi


#2

Hello again!

After reencoding a non-playing file with Handbrake on High-Profile without 8x8cdt set to “No” the file still doesn’t play. To make things short here are now the profiles of a working file and a non working file.

Perhaps someone sees more than i do.

Working File:

Name: Battlestar Galactica - Pilot Part1 -HD720p-.mkv
Date: 27/12/2007 13:30:28
Size: 4,696,111,413 bytes (4478.561 MB)

[Generic infos]

Play duration: 01:30:46 (5446.104 s)
Container type: matroska
Creation time: 27/12/2007 12:22:11 UTC
Number of streams: 4
Type of stream nr. 1: video (V_MPEG4/ISO/AVC) {BSG - S01E00}
Type of stream nr. 2: audio (A_AC3) {AC3 5.1 @ 384 kbps}
Type of stream nr. 3: audio (A_AC3) {AC3 5.1 @ 640 kbps}
Type of stream nr. 4: audio (A_VORBIS) {Commentary - Ogg 2.0 @ 96 kbps}
Audio streams: 3
Muxing Application: libebml v0.7.7 + libmatroska v0.8.1
Writing Application: mkvmerge v2.1.0 (‘Another Place To Fall’) built on Aug 19 2007 13:40:07

[Relevant data]

Resolution: 1280 x 720
Width: multiple of 32
Height: multiple of 16

[Video track]

Codec ID: V_MPEG4/ISO/AVC
Resolution: 1280 x 720
Frame aspect ratio: 16:9 = 1.777777
Pixel aspect ratio: 1:1 = 1
Display aspect ratio: 16:9 = 1.777777
Framerate: 25 fps

[Audio track nr. 1]

Codec ID: A_AC3
Channels (container): 6
Sample rate: 48000 Hz
Mode: 3 front, 2 rear, 1 LFE

[Audio track nr. 2]

Codec ID: A_AC3
Channels (container): 6
Sample rate: 48000 Hz
Mode: 3 front, 2 rear, 1 LFE

[Audio track nr. 3]

Codec ID: A_VORBIS
Channels (container): 2
Sample rate: 48000 Hz

[About H.264 encoding]

User data: x264
User data: core 57 svn-709C
User data: H.264/MPEG-4 AVC codec
User data: Copyleft 2005
User data: http://www.videolan.org/x264.html
User data: cabac=1
User data: ref=5
User data: deblock=1:-2:-1
User data: analyse=0x1:0
User data: me=umh
User data: fpel_cmp=sad
User data: subme=6
User data: me-prepass=0
User data: brdo=1
User data: mixed_ref=1
User data: me_range=16
User data: chroma_me=1
User data: trellis=2
User data: 8x8dct=0
User data: cqm=0
User data: deadzone=21,11
User data: chroma_qp_offset=0
User data: threads=3
User data: nr=0
User data: decimate=0
User data: mbaff=0
User data: bframes=3
User data: b_pyramid=1
User data: b_adapt=1
User data: b_bias=0
User data: direct=3
User data: wpredb=1
User data: bime=1
User data: keyint=250
User data: keyint_min=25
User data: scenecut=40(pre)
User data: rc=2pass
User data: bitrate=5755
User data: ratetol=1.0
User data: rceq=‘blurCplx^(1-qComp)’
User data: qcomp=0.60
User data: qpmin=10
User data: qpmax=51
User data: qpstep=4
User data: cplxblur=20.0
User data: qblur=0.5
User data: ip_ratio=1.40
User data: pb_ratio=1.30
SPS id: 0
  Profile: Main@L5.1
  Num ref frames: 8
  Chroma format idc: YUV 4:0:0
PPS id: 0 (SPS: 0)
  Entropy coding type: CABAC
  Weighted prediction: No
  Weighted bipred idc: B slices - implicit weighted prediction
  8x8dct: No

[Profile compliancy]

Profile to check: MTK PAL 6000
Resolution: 1280 x 720 > 720 x 576
Framerate: Ok

And now a non-working file:

Name: BBC.Earth.Power.of.the.Planet.1of5.Volcano.mkv
Date: 6/05/2009 21:19:03
Size: 2,322,379,888 bytes (2214.794 MB)

[Generic infos]

Play duration: 00:59:12 (3552 s)
Container type: matroska
Creation time: 3/10/2008 06:26:14 UTC
Number of streams: 3
Type of stream nr. 1: video (V_MPEG4/ISO/AVC) {x264 at 4843 kbps}
Type of stream nr. 2: subtitle (S_TEXT/UTF8)
Type of stream nr. 3: audio (A_AC3) {ac3 at 384 kbps 6 ch}
Audio streams: 1
Muxing Application: libebml v0.7.7 + libmatroska v0.8.1
Writing Application: mkvmerge v2.3.0 (‘Freak U’) built on Sep  8 2008 18:32:16

[Relevant data]

Resolution: 1280 x 720
Width: multiple of 32
Height: multiple of 16
Average DRF: 22.863338
Standard deviation: 1.871462
Std. dev. weighted mean: 1.713558

[Video track]

Codec ID: V_MPEG4/ISO/AVC
Resolution: 1280 x 720
Frame aspect ratio: 16:9 = 1.777777
Pixel aspect ratio: 1:1 = 1
Display aspect ratio: 16:9 = 1.777777
Framerate: 25 fps
Stream size: 2,150,334,862 bytes
Play duration: 00:59:12 (3551.84 s)
Bitrate: 4843.314703 kbps
Qf: 0.210213

[Audio track]

Codec ID: A_AC3
Channels (container): 6
Sample rate: 48000 Hz
Stream size: 170,496,000 bytes
Bitrate (container): 384 kbps
Initial skip: 29,184 bytes
AC-3 frames: 110981
Play duration: 00:59:11 (3551.392 s)
Bitrate (bitstream): 384 kbps CBR
Mode: 3 front, 2 rear, 1 LFE

[About H.264 encoding]

User data: x264
User data: core 64 r994M b35a044
User data: H.264/MPEG-4 AVC codec
User data: Copyleft 2003-2008
User data: http://www.videolan.org/x264.html
User data: cabac=1
User data: ref=5
User data: deblock=1:-3:-3
User data: analyse=0x3:0x113
User data: me=hex
User data: subme=7
User data: psy_rd=1.0:0.0
User data: brdo=1
User data: mixed_ref=1
User data: me_range=16
User data: chroma_me=1
User data: trellis=2
User data: 8x8dct=1
User data: cqm=0
User data: deadzone=21,11
User data: chroma_qp_offset=-2
User data: threads=3
User data: nr=0
User data: decimate=0
User data: mbaff=0
User data: bframes=5
User data: b_pyramid=1
User data: b_adapt=2
User data: b_bias=0
User data: direct=1
User data: wpredb=1
User data: bime=1
User data: keyint=250
User data: keyint_min=25
User data: scenecut=40(pre)
User data: rc=2pass
User data: bitrate=4843
User data: ratetol=1.0
User data: qcomp=0.60
User data: qpmin=10
User data: qpmax=51
User data: qpstep=4
User data: cplxblur=20.0
User data: qblur=0.5
User data: ip_ratio=1.40
User data: pb_ratio=1.30
User data: aq=1:0.80
SPS id: 0
  Profile: High@L4.1
  Num ref frames: 5
  Chroma format idc: YUV 4:2:0
PPS id: 0 (SPS: 0)
  Entropy coding type: CABAC
  Weighted prediction: No
  Weighted bipred idc: B slices - implicit weighted prediction
  8x8dct: Yes
Number of frames: 88796
Drop/delay frames: 0
Corrupted frames: 0

P-slices: 30869 ( 34.764 %) #########                
B-slices: 57029 ( 64.225 %) ################         
I-slices:   898 (  1.011 %)                          
SP-slices:     0 (  0.000 %)                          
SI-slices:     0 (  0.000 %)                          

[DRF analysis]

Average DRF: 22.863338
Standard deviation: 1.871462
Max DRF: 30

DRF<12:     0 (  0.000 %)                          
DRF=12:    23 (  0.026 %)                          
DRF=13:    28 (  0.032 %)                          
DRF=14:    71 (  0.080 %)                          
DRF=15:    51 (  0.057 %)                          
DRF=16:    78 (  0.088 %)                          
DRF=17:   126 (  0.142 %)                          
DRF=18:   420 (  0.473 %)                          
DRF=19:  1597 (  1.799 %)                          
DRF=20:  4969 (  5.596 %) #                        
DRF=21: 11850 ( 13.345 %) ###                      
DRF=22: 19016 ( 21.415 %) #####                    
DRF=23: 19737 ( 22.227 %) ######                   
DRF=24: 15703 ( 17.684 %) ####                     
DRF=25:  8436 (  9.500 %) ##                       
DRF=26:  3817 (  4.299 %) #                        
DRF=27:  1845 (  2.078 %) #                        
DRF=28:   766 (  0.863 %)                          
DRF=29:   219 (  0.247 %)                          
DRF=30:    44 (  0.050 %)                          
DRF>30:     0 (  0.000 %)                          

P-slices average DRF: 21.933849
P-slices std. deviation: 1.654549
P-slices max DRF: 29

B-slices average DRF: 23.408721
B-slices std. deviation: 1.745207
B-slices max DRF: 30

I-slices average DRF: 20.179287
I-slices std. deviation: 1.732094
I-slices max DRF: 27

[Profile compliancy]

Profile to check: MTK PAL 6000
Resolution: 1280 x 720 > 720 x 576
Framerate: Ok

I would be very thankfull for any advice.

Best regards

Andi


#3

Me again!

Just wanted you to know, that it was a hardware failure.

Changed the Box today; suddenly everything works fine…