Video And Tv Out
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WizardStan
Mega GP Mania
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That's just the LCD resolution. The TV out is standard TV. Either NTSC or PAL, depending on region.
I don't think you'll need to worry about encoding things for TV out though. Just encode to whatever and the Pandora will handle any scaling that needs to occur to make it fit.
I don't think you'll need to worry about encoding things for TV out though. Just encode to whatever and the Pandora will handle any scaling that needs to occur to make it fit.
CoMiKe
Member
I would say 480 pixels of height for NTSC (as it has 486 lines of height, but that number isn't multiple of 8) and 576 pixels of height for most PAL systems.
Take a look here for NTSC and here for different PAL systems.
Anyway, if you have and LCD Television, it would get scaled no matter what you use, so I wouldn't give too much importance to this.
Take a look here for NTSC and here for different PAL systems.
Anyway, if you have and LCD Television, it would get scaled no matter what you use, so I wouldn't give too much importance to this.
GizmoTheGreen
Active Member
since we are talking composite or s-video, which is analog signals.
pixels will never be "aligned" since it will be scaled.
and an old crt tv wouldnt have pixels anyway
pixels will never be "aligned" since it will be scaled.
and an old crt tv wouldnt have pixels anyway
CoMiKe
Member
Yeah, I'm not exactly an expert in this topic.macke said:
I only gave sources to the Wikipedia for those interested into reading.
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GizmoTheGreen said:
It will still have scanlines, which is fixed (depending on pal or ntsc). The pandora might (not sure) do some processing on the horizontal resolution before generating the signals for tv. I'm also not sure how LCD tv:s determine sample rate for each scanline (my guess is that it varies). Some tv:s might be able to determine proper horizontal resolution.
Ideally the pandora would be able to us the same resolution for tv
ut as the resolution which is used to generate the analog signal.
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laurencevde
Member
Not exactly. PAL and SECAM are technically just color-encoding techniques, and the resolution and refresh rate are separate standards. NTSC is a set of standards, including color encoding.
North America and half of SA use NTSC-M: 525 scanlines(486 visible), 30 interlaced fps (29.97 to be precise), 15734 lines per second.
Most of the rest of the world PAL with 625 scanlines(576 visible), 25 interlaced fps, 15625 lines/sec 14.8MHz clockspeed PAL.
Brazil uses PAL-M, with the "NTSC"-resolution of 525 line, 29.97 frame/s.
But that doesn't mean that you can only use those resolutions. Depending on the TV, other resolutions may also be possible. I once gave a CRT-TV 1024x768x60Hz over TV-out...
The OMAP3530's Video DAC has a 54Mhz clock, wich should allow for 1024x768x68Hz. If your TV supports it, you should be able to feed it anything up to that resolution.
North America and half of SA use NTSC-M: 525 scanlines(486 visible), 30 interlaced fps (29.97 to be precise), 15734 lines per second.
Most of the rest of the world PAL with 625 scanlines(576 visible), 25 interlaced fps, 15625 lines/sec 14.8MHz clockspeed PAL.
Brazil uses PAL-M, with the "NTSC"-resolution of 525 line, 29.97 frame/s.
But that doesn't mean that you can only use those resolutions. Depending on the TV, other resolutions may also be possible. I once gave a CRT-TV 1024x768x60Hz over TV-out...
The OMAP3530's Video DAC has a 54Mhz clock, wich should allow for 1024x768x68Hz. If your TV supports it, you should be able to feed it anything up to that resolution.
peca
Active Member
Sounds pretty good. I've got a TV-to-(S)VGA converter that provides 1024x768 output signal. Maybe I can get full 1024x768 to external monitorLaurencevde said:
Can't wait to try it out.
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CoMiKe
Member
So, for 16:9 LCD's, we could get a 1280x720@58Hz resolution, isn't it?Laurencevde said:
It's a shame we can't get 1280x720@60Hz just by 2Mhz in the Video DAC.
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Asmo
Advanced Member
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Non CRT screens will treat the analogue signal very differently, success is far from assured.
Even though a typical old CRT screen's analogue nature allows more 'flexibility', the pitch of the shadowmask is an impediment to resolving anything beyond 800x600, and at a max refresh rate of 60hz as the resolution increases visible flickering will too.
Even though a typical old CRT screen's analogue nature allows more 'flexibility', the pitch of the shadowmask is an impediment to resolving anything beyond 800x600, and at a max refresh rate of 60hz as the resolution increases visible flickering will too.
atomicthumbs
I am the king of the collectors, with hospital bed
Quick question: what happens when we output an 800x480 app to the TV? Does it just crop out the sides? I don't remember reading anything about what it does.
kloplop321
Psychotic Trans-dimensional Being
atomicthumbs said:
That would be something nice to know...
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palmertech
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It vastly depends on the television.
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El Jefe said:
Just a quick glance on Newegg.. any of these would do the trick.
http://www.newegg.com/Product/Product.aspx?Item=N82E16815255032&cm_re=video_to_usb_converter-_-15-255-032-_-Product
http://www.newegg.com/Product/Product.aspx?Item=N82E16815302002&cm_re=video_to_usb_converter-_-15-302-002-_-Product
http://www.newegg.com/Product/Product.aspx?Item=N82E16815144025&cm_re=video_to_usb_converter-_-15-144-025-_-Product
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peca
Active Member
You can use some SVideo/composite to VGA converter.El Jefe said:
EDIT:
TrashyMG: You point to USB graphical cards (USB to VGA) which doesn't connect TV out to computer monitor. USB to VGA add additional graphics card trough USB -- so it add new graphic output and keep TV out untouched.
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