[mythtvnz] [Fwd: Venetian blind on each side of display!!]

Robin Gilks g8ecj at gilks.org
Thu Jun 19 09:15:56 BST 2008


No response from the mail MythTV list so I thought I'd try here...

Greetings

Having just read the discussion about a test video for surround sound, I
downloaded the CC film Big Buck Bunny in 720p to try out both the HD
display I've just acquired and the 5.1 sound.

The sound is fine but under both MythTV and mplayer I get an effect like
one quarter of the screen each side is being viewed through a venetian
blind that reflects the other side - sort of like interlacing but from one
side to the other side rather than from one frame to the next. Here is a
(not very good) picture of the problem:
     http://gilks.ath.cx/gallery/main.php?g2_itemId=5555


Additional data:
~ $ mythfrontend --version
Please include all output in bug reports.
MythTV Version   : 17419M
MythTV Branch    : branches/release-0-21-fixes
Library API      : 0.21.20080304-1
Network Protocol : 40
Options compiled in:
 linux release using_oss using_alsa using_backend using_dvb using_frontend
using_ivtv using_joystick_menu using_lirc using_v4l using_x11
using_xrandr using_xv using_xvmc using_xvmcw using_xvmc_vld
using_bindings_perl using_bindings_python using_opengl
using_ffmpeg_threads

Hardware: Epia SP13000 using CN400 chipset with openchrome driver version
0.2.901


EDID data read from TV

(II) CHROME(0): Manufacturer: SNY  Model: 101  Serial#: 16843009
(II) CHROME(0): Year: 2007  Week: 1
(II) CHROME(0): EDID Version: 1.3
(II) CHROME(0): Analog Display Input,  Input Voltage Level: 0.700/0.300 V
(II) CHROME(0): Sync:  Separate
(II) CHROME(0): Max H-Image Size [cm]: horiz.: 160  vert.: 90
(II) CHROME(0): Gamma: 2.20
(II) CHROME(0): No DPMS capabilities specified; RGB/Color Display
(II) CHROME(0): First detailed timing is preferred mode
(II) CHROME(0): redX: 0.625 redY: 0.340   greenX: 0.280 greenY: 0.595
(II) CHROME(0): blueX: 0.155 blueY: 0.070   whiteX: 0.283 whiteY: 0.298
(II) CHROME(0): Supported VESA Video Modes:
(II) CHROME(0): 720x400 at 70Hz
(II) CHROME(0): 640x480 at 60Hz
(II) CHROME(0): 800x600 at 60Hz
(II) CHROME(0): 1024x768 at 60Hz
(II) CHROME(0): Manufacturer's mask: 0
(II) CHROME(0): Supported Future Video Modes:
(II) CHROME(0): #0: hsize: 640  vsize 480  refresh: 60  vid: 16433
(II) CHROME(0): #1: hsize: 800  vsize 600  refresh: 60  vid: 16453
(II) CHROME(0): #2: hsize: 1024  vsize 768  refresh: 60  vid: 16481
(II) CHROME(0): Supported additional Video Mode:
(II) CHROME(0): clock: 85.5 MHz   Image Size:  1600 x 900 mm
(II) CHROME(0): h_active: 1360  h_sync: 1424  h_sync_end 1536 h_blank_end
1792 h_border: 0
(II) CHROME(0): v_active: 768  v_sync: 771  v_sync_end 777 v_blanking: 795
v_border: 0
(II) CHROME(0): Supported additional Video Mode:
(II) CHROME(0): clock: 79.5 MHz   Image Size:  1600 x 900 mm
(II) CHROME(0): h_active: 1280  h_sync: 1344  h_sync_end 1472 h_blank_end
1664 h_border: 0
(II) CHROME(0): v_active: 768  v_sync: 771  v_sync_end 778 v_blanking: 798
v_border: 0
(II) CHROME(0): Ranges: V min: 57  V max: 63 Hz, H min: 30  H max: 49 kHz,
PixClock max 90 MHz
(II) CHROME(0): Monitor name: SONY TV
(II) CHROME(0): EDID (in hex):
(II) CHROME(0):         00ffffffffffff004dd9010101010101
(II) CHROME(0):         0111010308a05a780a0dc9a057479827
(II) CHROME(0):         12484ca1080031404540614001010101
(II) CHROME(0):         010101010101662150b051001b304070
(II) CHROME(0):         360040846300001e0e1f008051001e30
(II) CHROME(0):         4080370040846300001c000000fd0039
(II) CHROME(0):         3f1e3109000a202020202020000000fc
(II) CHROME(0):         00534f4e592054560a20202020200059
(II) CHROME(0): Using EDID range info for horizontal sync
(II) CHROME(0): Using EDID range info for vertical refresh
(II) CHROME(0): Printing DDC gathered Modelines:
(II) CHROME(0): Modeline "800x600"   40.00  800 840 968 1056  600 601 605
628 +hsync +vsync
(II) CHROME(0): Modeline "640x480"   25.20  640 656 752 800  480 490 492
525 -hsync -vsync
(II) CHROME(0): Modeline "720x400"   28.32  720 738 846 900  400 412 414
449 -hsync +vsync
(II) CHROME(0): Modeline "1024x768"   65.00  1024 1048 1184 1344  768 771
777 806 -hsync -vsync
(II) CHROME(0): Modeline "640x480"   23.75  640 664 720 800  480 483 487
500 -hsync +vsync
(II) CHROME(0): Modeline "800x600"   38.25  800 832 912 1024  600 603 607
624 -hsync +vsync
(II) CHROME(0): Modeline "1024x768"   63.50  1024 1072 1176 1328  768 771
775 798 -hsync +vsync
(II) CHROME(0): Modeline "1360x768"   85.50  1360 1424 1536 1792  768 771
777 795 +hsync +vsync
(II) CHROME(0): Modeline "1280x768"   79.50  1280 1344 1472 1664  768 771
778 798 +hsync -vsync
(II) CHROME(0): ViaOutputsDetect



Modelines the driver has probed - it runs with the 1360x720 one

(--) CHROME(0): Virtual size is 1360x768 (pitch 1360)
(**) CHROME(0):  Driver mode "1360x768": 85.5 MHz (scaled from 0.0 MHz),
47.7 kHz, 60.0 Hz
(II) CHROME(0): Modeline "1360x768"   85.50  1360 1424 1536 1792  768 771
777 795 +hsync +vsync
(**) CHROME(0):  Driver mode "1280x768": 79.5 MHz (scaled from 0.0 MHz),
47.8 kHz, 59.9 Hz
(II) CHROME(0): Modeline "1280x768"   79.50  1280 1344 1472 1664  768 771
778 798 +hsync -vsync
(**) CHROME(0):  Driver mode "1024x768": 65.0 MHz (scaled from 0.0 MHz),
48.4 kHz, 60.0 Hz
(II) CHROME(0): Modeline "1024x768"   65.00  1024 1048 1184 1344  768 771
777 806 -hsync -vsync
(**) CHROME(0):  Driver mode "1024x768": 63.5 MHz (scaled from 0.0 MHz),
47.8 kHz, 59.9 Hz
(II) CHROME(0): Modeline "1024x768"   63.50  1024 1072 1176 1328  768 771
775 798 -hsync +vsync
(**) CHROME(0):  Default mode "1024x768": 65.0 MHz (scaled from 0.0 MHz),
48.4 kHz, 60.0 Hz
(II) CHROME(0): Modeline "1024x768"   65.00  1024 1048 1184 1344  768 771
777 806 -hsync -vsync
(**) CHROME(0):  Driver mode "800x600": 40.0 MHz (scaled from 0.0 MHz),
37.9 kHz, 60.3 Hz
(II) CHROME(0): Modeline "800x600"   40.00  800 840 968 1056  600 601 605
628 +hsync +vsync
(**) CHROME(0):  Driver mode "800x600": 38.2 MHz (scaled from 0.0 MHz),
37.4 kHz, 59.9 Hz
(II) CHROME(0): Modeline "800x600"   38.25  800 832 912 1024  600 603 607
624 -hsync +vsync
(**) CHROME(0):  Default mode "800x600": 40.0 MHz (scaled from 0.0 MHz),
37.9 kHz, 60.3 Hz
(II) CHROME(0): Modeline "800x600"   40.00  800 840 968 1056  600 601 605
628 +hsync +vsync
(**) CHROME(0):  Driver mode "640x480": 25.2 MHz (scaled from 0.0 MHz),
31.5 kHz, 60.0 Hz
(II) CHROME(0): Modeline "640x480"   25.20  640 656 752 800  480 490 492
525 -hsync -vsync
(**) CHROME(0):  Default mode "640x480": 25.2 MHz (scaled from 0.0 MHz),
31.5 kHz, 59.9 Hz
(II) CHROME(0): Modeline "640x480"   25.18  640 656 752 800  480 490 492
525 -hsync -vsync
(**) CHROME(0): Display dimensions: (1600, 900) mm
(**) CHROME(0): DPI set to (21, 21)


mplayers analysis of the video certainly makes sense and is the same on
both my server box (which plays OK on an nvidia card) and the Epia box...

$ mplayer /mnt/videos/big_buck_bunny_720p_surround.avi
MPlayer dev-SVN-r26753-4.1.2 (C) 2000-2008 MPlayer Team
CPU: AMD Athlon(tm) XP 2700+ (Family: 6, Model: 8, Stepping: 1)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE

Playing /mnt/videos/big_buck_bunny_720p_surround.avi.
AVI file format detected.
[aviheader] Video stream found, -vid 0
[aviheader] Audio stream found, -aid 1
AVI: ODML: Building ODML index (2 superindexchunks).
VIDEO:  [FMP4]  1280x720  24bpp  24.000 fps  4001.7 kbps (488.5 kbyte/s)
Clip info:
 Software: AVI-Mux GUI 1.17.7, Aug  8 2006  20:59:17
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffodivx] vfm: ffmpeg (FFmpeg MPEG-4)
==========================================================================
==========================================================================
Opening audio decoder: [liba52] AC3 decoding with liba52
Using SSE optimized IMDCT transform
Using MMX optimized resampler
AUDIO: 48000 Hz, 2 ch, s16le, 448.0 kbit/29.17% (ratio: 56000->192000)
Selected audio codec: [a52] afm: liba52 (AC3-liba52)
==========================================================================
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
VDec: vo config request - 1280 x 720 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
VO: [xv] 1280x720 => 1280x720 Planar YV12  [fs] [zoom]
A: 596.4 V: 596.4 A-V:  0.004 ct:  0.045 14315/14315 16%  0%  1.9% 53 0

Exiting... (End of file)




Any idea how to solve this? All my SD display stuff is fine...


-- 
Robin Gilks








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