2012-10-23, 22:42
Hi guys,
I'm new here, but have been using XBMC since the Xbox original days back to XBMP.
A friend of mine cut from me specific songs of a blu-ray disc, and right now I don't know which software he did the work with.
The problem is, when I play this video with XBMC, the sound is alright, without any choppiness, but the video is choppy and several frames are consistently dropped.
It doesn't show however any weird artifact or other weird behaviours.
I did some research here first, and the video is interlaced, and I read that the VDA decoder doesn't work with these, so it may explain why I get a ridiculous CPU usage (over 130 %) and the VCPU is capped at 99 % as well...
I then decided to disable the VDA decoder and try playing some blu-ray movies I ripped myself (full bitrate, uncompressed) with DVDfab, and they play fine without any hiccups, even when the VDA is disable.
So the CPU seems strong enough to decode by itself 1080p material.
Here is what media info as to say about the m2ts file giving me problems :
General
ID : 1 (0x1)
Complete name : /Volumes/My Book/Video/Clips et concerts/Michael Buble/David Foster & Friends Hit Man/I- Michael Bublé - Feeling Good 08.m2ts
Format : BDAV
Format/Info : Blu-ray Video
File size : 1.24 GiB
Duration : 4mn 39s
Overall bit rate mode : Variable
Overall bit rate : 38.2 Mbps
Maximum Overall bit rate : 35.5 Mbps
Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : 27
Duration : 4mn 39s
Bit rate mode : Variable
Bit rate : 36.0 Mbps
Maximum bit rate : 38.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Bits/(Pixel*Frame) : 0.579
Stream size : 1.17 GiB (94%)
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : 129
Duration : 4mn 39s
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 21.4 MiB (2%)
I did notice that with this m2ts, xbmc seem to try reaching 60 fps in opposition to a movie blu-ray rips which plays at 24 fps.
So it might the reason for the additional burden?
My question is, is it a question of settings in xbmc or my hardware isn't strong enough ?
I have a Macbook Pro late 2011 with an i7 2675QM @ 2.2 Ghz and an ATI Radeon 6750M 512 Mo GDDR5. (not relevant with VDA decoder off I suppose?)
I'm running XBMC on OSX Mountain Lion
Thank you
I'm new here, but have been using XBMC since the Xbox original days back to XBMP.
A friend of mine cut from me specific songs of a blu-ray disc, and right now I don't know which software he did the work with.
The problem is, when I play this video with XBMC, the sound is alright, without any choppiness, but the video is choppy and several frames are consistently dropped.
It doesn't show however any weird artifact or other weird behaviours.
I did some research here first, and the video is interlaced, and I read that the VDA decoder doesn't work with these, so it may explain why I get a ridiculous CPU usage (over 130 %) and the VCPU is capped at 99 % as well...
I then decided to disable the VDA decoder and try playing some blu-ray movies I ripped myself (full bitrate, uncompressed) with DVDfab, and they play fine without any hiccups, even when the VDA is disable.
So the CPU seems strong enough to decode by itself 1080p material.
Here is what media info as to say about the m2ts file giving me problems :
General
ID : 1 (0x1)
Complete name : /Volumes/My Book/Video/Clips et concerts/Michael Buble/David Foster & Friends Hit Man/I- Michael Bublé - Feeling Good 08.m2ts
Format : BDAV
Format/Info : Blu-ray Video
File size : 1.24 GiB
Duration : 4mn 39s
Overall bit rate mode : Variable
Overall bit rate : 38.2 Mbps
Maximum Overall bit rate : 35.5 Mbps
Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : 27
Duration : 4mn 39s
Bit rate mode : Variable
Bit rate : 36.0 Mbps
Maximum bit rate : 38.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Bits/(Pixel*Frame) : 0.579
Stream size : 1.17 GiB (94%)
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : 129
Duration : 4mn 39s
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 21.4 MiB (2%)
I did notice that with this m2ts, xbmc seem to try reaching 60 fps in opposition to a movie blu-ray rips which plays at 24 fps.
So it might the reason for the additional burden?
My question is, is it a question of settings in xbmc or my hardware isn't strong enough ?
I have a Macbook Pro late 2011 with an i7 2675QM @ 2.2 Ghz and an ATI Radeon 6750M 512 Mo GDDR5. (not relevant with VDA decoder off I suppose?)
I'm running XBMC on OSX Mountain Lion
Thank you