720p HD to XVID-Quality issues

[Archie_Yannas]

Hi

Ive recently being doing a few Ch9 High Definition MPEG captures(1440x1080i) and converting to 700mb XVID/AC3 using the similar pixel ratio 1440x816 and worked treat. It produced a really high resolution that looked great on an full screen by using the usual tools, VisionPlus MPEG capture > PVAstramento demux > Cuttermaran edit > GordianKnot conversion to XVID/AC3.

However I dont seem to having the same success with a Ch 7 HD capture (720x576 progressive). Each conversion I've attempted always seems to produce a poor picture (relative) more like a SD conersion. I dont know if this issue, expected result or I'm not setting the DGindex or avisynth correctly i.e. Field operation, or any other gordian knot setting.

Anyone have any suggestions?
Should I be doing unusual like setting to 1440 and interlacing?

Thanks for any reply.

[Ricey]

Ch 7 HD capture (720x576 progressive)

Are you saying that the captured stream is 720x576? If so
thats not HD.

[ilovejedd]

Channel 7 in the LA area is ABC and their OTA HD broadcast is at 720p (1280x720). Most other 720p channels I've seen have a resolution of 1280x720. Either he's capturing the wrong broadcast or he thought the 720 referred to the width. Most likely the former. Hmm, and isn't 1080i usually 1920x1080?

[Matthew]

In Australia channel 7's "HD" channel does broadcast at 720x576, at least some of the time anyway, so the original poster is not recording the wrong broadcast.