| Matthew Rosewarne on 17 Jan 2008 11:18:34 -0800 |
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On Monday 14 January 2008, Brian Stempin wrote: > I've purchased a DVI->SVideo dongle for my mac. If I set the resolution to > 640x480 (**), everything displays on my TV fine except for DVD playback > (*). If I attempt to play a DVD while my Mac is connected to my TV, I hear > sound, but I see a blue screen. If I play the same DVD while the unit is > connected to a computer monitor (running at the same resolution, mind you) > the DVD shows up. However, the DVD image is stretched....it should have > black bars above and below it. Instead, the image is zoomed, pushing parts > of the image off of the left and right hand sides of my monitor. > > (1) How do I get rid of the blue screen when using my TV as a display? > (2) How do I correctly resize the DVD playback? While I'm not too familiar with that particular hardware, consider that this might be happening either due to a hardware issue or incomplete drivers. That blue screen is most likely the "video overlay" (sort of like a "green screen" used for special effects), used to offload the DVD playback from the CPU to a dedicated DVD-decoder on the video hardware. Many cards only allow use of the overlay on one screen (usually the first), which would cause problems when playing DVDs on a multi-head setup. It might be possible to eliminate this problem by somehow disabling the hardware DVD decoder and using the CPU, or possibly by fixing the driver. Attachment:
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