[mythtv-users] Playback stoppy and go-y. Ie super-duper-uber-jittery.

[Greg Stark]

Kevin Kuphal <kuphal at dls.net> writes:

> What video drivers are you using for your ATI card?  You'd be suprised 
> how crappy performance can be when using unoptimized drivers.

Using the X 6.9.0 "ati" driver which supports Xv. "mplayer /dev/video" works
fine in full screen mode.

It is a relatively early driver though, perhaps it's missing some key alpha
blending feature or something like that?

Here's the output of xvinfo:

X-Video Extension version 2.2
screen #0
  Adaptor #0: "ATI Radeon Video Overlay"
    number of ports: 1
    port base: 73
    operations supported: PutImage 
    supported visuals:
      depth 24, visualID 0x23
      depth 24, visualID 0x24
      depth 24, visualID 0x25
      depth 24, visualID 0x26
      depth 24, visualID 0x27
      depth 24, visualID 0x28
      depth 24, visualID 0x29
      depth 24, visualID 0x2a
      depth 24, visualID 0x2b
      depth 24, visualID 0x2c
      depth 24, visualID 0x2d
      depth 24, visualID 0x2e
      depth 24, visualID 0x2f
      depth 24, visualID 0x30
      depth 24, visualID 0x31
      depth 24, visualID 0x32
    number of attributes: 22
      "XV_DEVICE_ID" (range 0 to -1)
              client gettable attribute (current value is 108)
      "XV_LOCATION_ID" (range 0 to -1)
              client gettable attribute (current value is 109)
      "XV_INSTANCE_ID" (range 0 to -1)
              client gettable attribute (current value is 110)
      "XV_DUMP_STATUS" (range 0 to 1)
              client settable attribute
      "XV_SET_DEFAULTS" (range 0 to 1)
              client settable attribute
      "XV_AUTOPAINT_COLORKEY" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_COLORKEY" (range 0 to -1)
              client settable attribute
              client gettable attribute (current value is 30)
      "XV_DOUBLE_BUFFER" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 1)
      "XV_OVERLAY_ALPHA" (range 0 to 255)
              client settable attribute
              client gettable attribute (current value is 255)
      "XV_GRAPHICS_ALPHA" (range 0 to 255)
              client settable attribute
              client gettable attribute (current value is 255)
      "XV_ALPHA_MODE" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_BRIGHTNESS" (range -1000 to 1000)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_CONTRAST" (range -1000 to 1000)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_SATURATION" (range -1000 to 1000)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_COLOR" (range -1000 to 1000)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_HUE" (range -1000 to 1000)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_RED_INTENSITY" (range -1000 to 1000)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_GREEN_INTENSITY" (range -1000 to 1000)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_BLUE_INTENSITY" (range -1000 to 1000)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_SWITCHCRT" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 0)
      "XV_GAMMA" (range 100 to 10000)
              client settable attribute
              client gettable attribute (current value is 1000)
      "XV_COLORSPACE" (range 0 to 1)
              client settable attribute
              client gettable attribute (current value is 0)
    maximum XvImage size: 2048 x 2048
    Number of image formats: 8
      id: 0x41424752 (RGBA)
        guid: 52474241-0000-0010-8000-00aa00389b71
        bits per pixel: 32
        number of planes: 1
        type: RGB (packed)
        depth: 32
        red, green, blue masks: 0xff0000, 0xff00, 0xff
      id: 0x0
        guid: 52474200-0000-0010-8000-00aa00389b71
        bits per pixel: 24
        number of planes: 1
        type: RGB (packed)
        depth: 24
        red, green, blue masks: 0xff0000, 0xff00, 0xff
      id: 0x54424752 (RGBT)
        guid: 52474254-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: RGB (packed)
        depth: 16
        red, green, blue masks: 0x7c00, 0x3e0, 0x1f
      id: 0x32424752 (RGB2)
        guid: 52474200-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: RGB (packed)
        depth: 16
        red, green, blue masks: 0xf800, 0x7e0, 0x1f
      id: 0x32595559 (YUY2)
        guid: 59555932-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x59565955 (UYVY)
        guid: 55595659-0000-0010-8000-00aa00389b71
        bits per pixel: 16
        number of planes: 1
        type: YUV (packed)
      id: 0x32315659 (YV12)
        guid: 59563132-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)
      id: 0x30323449 (I420)
        guid: 49343230-0000-0010-8000-00aa00389b71
        bits per pixel: 12
        number of planes: 3
        type: YUV (planar)


-- 
greg