Playback problems of 1440x720p H264 AVC with ION2
#1
Hi,
My system is Atom 510 and ION2 Dharma 10.0 Win 7 64 bit (Shuttle xs35gt)serving a full HD TV via HDMI. I have problems to play H264 720p 30fps (like BBC HD TV live via tuxbox or saved files (ts)). Hardware acceleration is on. All other tv formats (such as ZDF 1080 50 fps) play well. When I play the 720p files frames are lost down to stop of the video (audio continues). I guess this is a problem of the codec.

I should mention that I can play the files with Windows Media Player and Media Center. VLC also has some problems.

Any suggestions? I searched for quite some time but could not find a solution.

Here is a log file where I first play the live stream and then the file:
http://pastebin.com/fzVJ8hFr

Thanks,
HUK11

And here is the media information of the file that I played:

General
ID : 802
Complete name : \\bm750\Harddisk\movie\20101219 1559 - BBC One HD - Drop Zone.ts
Format : MPEG-TS
File size : 1.79 GiB
Duration : 25mn 9s
Overall bit rate : 10.2 Mbps

Video
ID : 5400 (0x1518)
Menu ID : 6941 (0x1B1D)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Format settings, GOP : M=4, N=12
Codec ID : 27
Duration : 25mn 9s
Bit rate : 9 248 Kbps
Width : 1 440 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Bits/(Pixel*Frame) : 0.238
Stream size : 1.62 GiB (91%)
Color primaries : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics : BT.709-5, BT.1361
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio #1
ID : 5401 (0x1519)
Menu ID : 6941 (0x1B1D)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Codec ID : 6
Duration : 25mn 9s
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Video delay : -925ms
Stream size : 34.5 MiB (2%)
Language : English

Audio #2
ID : 5402 (0x151A)
Menu ID : 6941 (0x1B1D)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Codec ID : 3
Duration : 25mn 9s
Bit rate mode : Constant
Bit rate : 256 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Video delay : -866ms
Stream size : 46.1 MiB (3%)
Language : nar

Text #1
ID : 5403 (0x151B)-888
Menu ID : 6941 (0x1B1D)
Format : Teletext Subtitle
Language : English

Text #2
ID : 5404 (0x151C)
Menu ID : 6941 (0x1B1D)
Format : DVB Subtitle
Codec ID : 6
Language : English

Menu
ID : 260 (0x104)
Menu ID : 6941 (0x1B1D)
Duration : 25mn 9s
List : 5400 (0x1518) (AVC) / 5401 (0x1519) (AC-3, English) / 5402 (0x151A) (MPEG Audio, nar) / 5403 (0x151B) () / 5404 (0x151C) (DVB Subtitle, English)
Language : / English / nar / / English
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#2
There's obviously a problem with the format because the log is full of "[h264] hardware accelerator failed to decode picture" errors. Why the format is causing a problem I don't know...

JR
Reply
#3
I finally posted a bug report (my first one, not perfect):

http://trac.xbmc.org/ticket/11201#comment:1

Hope there will be some echo.

huk
Reply
#4
Hi again,

There has not been a response or echo for a month. I am just a user and not a multimedia expert and do not really know how to pinpoint to the proper problem. However, I found some extended discussion in this forum: http://forum.team-mediaportal.com/codecs...vxa-93339/ . It seems that BBC HD uses advanced features of H.264 such as variable bit rate. Many codecs have problems to play these files. As I mentioned under Windows 7 the Microsoft DTV-DVD video decoder codec works well. I can play the format using the Windows Media Player as external program to Xbmc.

Can I use this (Microsoft) codec with Xbmc? How?

Thanks,

huk11
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