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[daveman]

HI there,

I have recently started to use .mkv files for hi def (1080p) videos.  I am having an issue where I am unable to fast forward or rewind when steaming to a WDTV (i.e., the video will simply return to the beginning) .  Even if I try to "force" a video to a certain time via the MC interface, it will simply start over.

Anyone know of a fix or setting that will allow mkv videos to play properly?

Dave

[BartMan01]

It would help to know what was in the MKVs that are problematic.  MKV = container, not format and MKV files can contain pretty much any format of A/V content.  Use a program like mediainfo and post up exactly what is in the file as far as video and audio streams.

[daveman]

is this what you want?

General
Unique ID                                : 237334318269183337487720097455774825273 (0xB28CED5265BE4CCF9C696DC4FDFAFB39)
Complete name                            : \\SERVER\Movies\Guardians of the Galaxy - 1080p.mkv
Format                                   : Matroska
Format version                           : Version 4 / Version 2
File size                                : 8.74 GiB
Duration                                 : 2h 0mn
Overall bit rate                         : 10.4 Mbps
Encoded date                             : UTC 2014-11-15 15:12:34
Writing application                      : mkvmerge v6.2.0 ('Promised Land') built on Apr 28 2013 12:22:01
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                   : Yes
Format settings, ReFrames                : 5 frames
Codec ID                                 : V_MPEG4/ISO/AVC
Duration                                 : 2h 0mn
Bit rate                                 : 8 846 Kbps
Width                                    : 1 920 pixels
Height                                   : 800 pixels
Display aspect ratio                     : 2.40:1
Frame rate mode                          : Constant
Frame rate                               : 23.976 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.240
Stream size                              : 7.30 GiB (83%)
Writing library                          : x264 core 142 r2479 dd79a61
Encoding settings                        : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=18 / lookahead_threads=3 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=8846 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
Language                                 : English
Default                                  : Yes
Forced                                   : No

Audio
ID                                       : 2
Format                                   : DTS
Format/Info                              : Digital Theater Systems
Mode                                     : 16
Format settings, Endianness              : Big
Codec ID                                 : A_DTS
Duration                                 : 2h 0mn
Bit rate mode                            : Constant
Bit rate                                 : 1 509 Kbps
Channel(s)                               : 6 channels
Channel positions                        : Front: L C R, Side: L R, LFE
Sampling rate                            : 48.0 KHz
Bit depth                                : 24 bits
Compression mode                         : Lossy
Stream size                              : 1.27 GiB (15%)
Language                                 : English
Default                                  : Yes
Forced                                   : No

Menu
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[BartMan01]

is this what you want?

Yes, that will help people with WDTV knowledge give you better feedback.  I wish I could help, but I gave my WDTV away years ago to a family member.  I could never get it to work 100% with MC and swapped it out for a spare laptop with a IR receiver.

[daveman]

WDTV Works great for me except for this mkv issue with large hi def (1080p) files.

[Daydream]

Wild guess: the problem is your file. These 2 things do not go together:

Format profile                           : High@L4.1
Format settings, ReFrames                : 5 frames

L4.1 stops at 4 reframes and WDTV (although I can only guess your unit is not the newer WDTV) does not support content with higher no. of reframes than 4.

[Hendrik]

Wild guess: the problem is your file. These 2 things do not go together:

Format profile                           : High@L4.1
Format settings, ReFrames                : 5 frames

L4.1 stops at 4 reframes and WDTV (although I can only guess your unit is not the newer WDTV) does not support content with higher no. of reframes than 4.

Actually thats not true. The profiles define a size of the "DPB" (Decoded Picture Buffer), not an absolute ref frame limit, and for L4.1 its 32768 macro blocks in size.
One 1920x1080 video frame is 8160 macro blocks in size (one macro block is 16x16), so 4 of those fit into the DPB.

However, his video is only 1920x800, one frame is 6000 macro blocks, so 5 of those fit into the DPB.
Hence, the level is not violated.

Regarding the original problem of not being able to seek, it sounds like the WDTV does not support time-based seeks, and unfortunately MC doesn't support byte-based seeks (yet).

[daveman]

"unfortunately MC doesn't support byte-based seeks"

Is this something that MC will support?

[CountryBumkin]

Hint 

unfortunately MC doesn't support byte-based seeks (yet).

[daveman]

bspachman posted these settings which work well on a WDTV Live.  I am now able to fast forward and pause mkv files

VIDEO:
     Mode: Original
     Format: H264-TS very high bandwidth stream auto fps
Video Advanced:
     Enable: DLNA; DLNAExtra; Enable bitrate Field; Present Caption Resources;
               Present Small Artwork; Present Subtitle Resources
    Empty values for Video MimeType Override & Video DLNA Override