Playback Stutters or freezes with certain files

[gbcasual]

Hi All

I've got the hub on the latest firmware version and it stutters/freezes on certain files.

It seems to be 3D files that have a problem.  For instance one is a download of the LG 3D Demo and only 266Mb, yet on playback through HDMI it always freezes a minute or 2 in.  Only a restart of the hub will unfreeze it.

On larger files the playback will stutter for a while before eventually freezing.

If I play the files from my hub over wireless to my laptop they run absolutely fine all the way through, which does not seem to make much sense.

Any ideas folks?

Thanks

Jon

[TonyPh12345]

Please post the full TEXT output of MEDIAINFO for such a file.

http://mediainfo.sourceforge.net

[gbcasual]

Just downloaded and installed it, so here you go:

General
Unique ID : 168348648403719580577546155723716462494 (0x7EA6C532C2870C1E037BA147C20E879E)
Complete name : H:\Videos\Calibration\LG_3D_Demo_1080p_(www.3dformat.info)_AC3.mkv
Format : Matroska
Format version : Version 2
File size : 266 MiB
Duration : 4mn 38s
Overall bit rate : 8 007 Kbps
Writing application : Lavf51.12.1
Writing library : Lavf51.12.1

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L1.3
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=12
Codec ID : V_MPEG4/ISO/AVC
Duration : 4mn 38s
Bit rate : 7 784 Kbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.125
Stream size : 259 MiB (97%)
Default : Yes
Forced : No

Audio
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : A_AC3
Duration : 4mn 38s
Bit rate mode : Constant
Bit rate : 64.0 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 2.13 MiB (1%)
Default : Yes
Forced : No

Thanks for looking.

[TonyPh12345]

This is one of those "Weird Files."

For one thing, its profile is "Baseline@L1.3" 

Baseline@L1.3 doesn't support High Definition Video.

According to the AVC standards, the minimum profile for 1920x1080 video is Baseline@L4.0.

The maximum bitrate for Baseline@L1.3 is 768 kilobits per second, but that video has an average bitrate of over 10X that amount.

So in other words, while an LG device might be able to play it, the video is nonstandard and WAY out of specification.

[gbcasual]

Thanks for that.

How comes it streams ok to my laptop?

Is it just one of those things....?

[TonyPh12345]

Different devices & software will have differing tolerances to specification variance.

[gbcasual]

Ok, thanks for that.

I tried a friends copy of Avatar 3D, I am still to purchase a blu ray player, and this also had stuttering issues, picture break up.

Here is the mediainfo output of that:

General
Unique ID : 250171347975580272115870078773781347248 (0xBC353FC063D921229B6E2D24C5C43BB0)
Complete name : D:\jmacey\My Videos\Avatar.2010.3D.mkv
Format : Matroska
Format version : Version 2
File size : 19.8 GiB
Duration : 2h 41mn
Overall bit rate mode : Variable
Overall bit rate : 17.5 Mbps
Encoded date : UTC 2011-09-21 14:59:05
Writing application : mkvmerge v4.6.0 ('Still Crazy After All These Years') built on Mar 10 2011 02:50:32
Writing library : libebml v1.2.0 + libmatroska v1.1.0

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Muxing mode : Header stripping
Codec ID : V_MPEG4/ISO/AVC
Duration : 2h 41mn
Bit rate : 15.6 Mbps
Nominal bit rate : 13.2 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.314
Stream size : 17.6 GiB (89%)
Writing library : x264 core 116 r2074 2641b9e
Encoding settings : cabac=1 / ref=4 / deblock=1:-1:-1 / analyse=0x3:0x113 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=48 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=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=2pass / mbtree=1 / bitrate=13223 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=50000 / vbv_bufsize=50000 / nal_hrd=none / ip_ratio=1.40 / aq=1:1.00
Language : English
Default : Yes
Forced : No

Audio
ID : 2
Format : DTS
Format/Info : Digital Theater Systems
Format profile : MA / Core
Muxing mode : Header stripping
Codec ID : A_DTS
Duration : 2h 41mn
Bit rate mode : Variable
Bit rate : 1 561 Kbps / 1 510 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 : Lossless / Lossy
Language : English
Default : Yes
Forced : No

Text #1
ID : 3
Format : PGS
Muxing mode : zlib
Codec ID : S_HDMV/PGS
Codec ID/Info : The same subtitle format used on BDs/HD-DVDs
Language : English
Default : Yes
Forced : No

Text #2
ID : 4
Format : PGS
Muxing mode : zlib
Codec ID : S_HDMV/PGS
Codec ID/Info : The same subtitle format used on BDs/HD-DVDs
Language : French
Default : No
Forced : No

Text #3
ID : 5
Format : PGS
Muxing mode : zlib
Codec ID : S_HDMV/PGS
Codec ID/Info : The same subtitle format used on BDs/HD-DVDs
Language : German
Default : No
Forced : No

Text #4
ID : 6
Format : PGS
Muxing mode : zlib
Codec ID : S_HDMV/PGS
Codec ID/Info : The same subtitle format used on BDs/HD-DVDs
Language : Italian
Default : No
Forced : No

Text #5
ID : 7
Format : PGS
Muxing mode : zlib
Codec ID : S_HDMV/PGS
Codec ID/Info : The same subtitle format used on BDs/HD-DVDs
Language : Dutch
Default : No
Forced : No

Text #6
ID : 8
Format : PGS
Muxing mode : zlib
Codec ID : S_HDMV/PGS
Codec ID/Info : The same subtitle format used on BDs/HD-DVDs
Language : Turkish
Default : No
Forced : No

Text #7
ID : 9
Format : PGS
Muxing mode : zlib
Codec ID : S_HDMV/PGS
Codec ID/Info : The same subtitle format used on BDs/HD-DVDs
Language : English
Default : No
Forced : No

Menu
00:00:00.000 : en:00:00:00.000
00:00:23.232 : en:00:00:23.232
00:02:47.667 : en:00:02:47.667
00:06:17.961 : en:00:06:17.961
00:07:53.598 : en:00:07:53.598
00:12:04.891 : en:00:12:04.891
00:14:00.465 : en:00:14:00.465
00:17:01.479 : en:00:17:01.479
00:20:00.574 : en:00:20:00.574
00:24:00.230 : en:00:24:00.230
00:26:53.278 : en:00:26:53.278
00:31:41.900 : en:00:31:41.900
00:33:33.428 : en:00:33:33.428
00:35:43.850 : en:00:35:43.850
00:40:07.822 : en:00:40:07.822
00:43:31.859 : en:00:43:31.859
00:48:18.896 : en:00:48:18.896
00:49:23.627 : en:00:49:23.627
00:51:52.609 : en:00:51:52.609
00:54:29.975 : en:00:54:29.975
00:58:54.698 : en:00:58:54.698
00:59:56.051 : en:00:59:56.051
01:02:01.634 : en:01:02:01.634
01:05:10.198 : en:01:05:10.198
01:07:42.433 : en:01:07:42.433
01:11:36.417 : en:01:11:36.417
01:15:11.006 : en:01:15:11.006
01:17:51.625 : en:01:17:51.625
01:20:29.116 : en:01:20:29.116
01:24:41.910 : en:01:24:41.910
01:29:40.583 : en:01:29:40.583
01:32:12.819 : en:01:32:12.819
01:36:04.801 : en:01:36:04.801
01:37:55.786 : en:01:37:55.786
01:41:37.341 : en:01:41:37.341
01:44:33.100 : en:01:44:33.100
01:48:15.489 : en:01:48:15.489
01:51:28.974 : en:01:51:28.974
01:53:53.868 : en:01:53:53.868
01:55:32.759 : en:01:55:32.759
01:58:38.820 : en:01:58:38.820
02:02:05.568 : en:02:02:05.568
02:05:33.859 : en:02:05:33.859
02:10:01.835 : en:02:10:01.835
02:12:53.382 : en:02:12:53.382
02:16:07.284 : en:02:16:07.284
02:19:50.841 : en:02:19:50.841
02:23:00.655 : en:02:23:00.655
02:25:50.325 : en:02:25:50.325
02:28:37.492 : en:02:28:37.492
02:31:14.065 : en:02:31:14.065
02:35:05.296 : en:02:35:05.296
02:36:43.018 : en:02:36:43.018

So I know for the future, what information do you go to in the output to try and determine the problem?

Format profile : High@L4.1 which is better than the LG demo.....

[TonyPh12345]

Are you streaming these over a network?  Or playing them via local storage?

[gbcasual]

These are stored on the hubs internal drive and played over HDMI to my TV directly.