Quote:
Originally Posted by niknar1900
are most channels progressive, and then most receivers convert them to interlaced for regular TVs? or are most of the signals really 480i?
does it depend on what satellite and provider?
i would think somebody with a pci sat card could answer this please.
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Looks to me like most everything is 480i. TSREADER is a good tool to monitor this, in that you can click on a video PID, and it will show you things like for one of the
PBS channels I"m looking at right now, :
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Stream Type: 0x02 MPEG-2 Video PID 305 (0x0131)
MPEG Video: Bitrate 15.000 Mbps Resolution 720 x 480i
MPEG Video: Framerate 29.97 fps Aspect Ratio 4:3 Chroma Format 4:2:0
******************
A year ago, I recorded portions of some NFL games both in 720p and 1080i. The 720p is much better when there is motion. I would take freeze frames from the video, and almost every frame of the 1080i would be blurry because of the interlacing, and you'd have to use a deinterlace function of the graphics program to only use one frame, which ends up giving you half the resolution vertically. However the freeze frames from the 720p video were awesome. Settled a lot of arguments in the NFL list I read.
EDIT: I notice that this relates to another thread, so I should say that when I said most was 480i, I was refering to satellite feeds. Off hand, I don't know what format DVDs are in for example.