Trying to use Avisynth to convert 1080i to 1080P 24fps or 720P 24fps.

[dokworm]

I have a bunch of 1080i HDTV at 29.whatever fps recorded onto my PC, and I want to turn it into 1080P 24fps or 720P 24fps and save it back out in a more efficient codec.

I've been reading up, and I think I have most of it worked out, but if anyone could steer me in the right direction, it would be great.

A couple of questions.

1) Will Divx or Xvid keep the quality high yet still give me smaller files than the .ts originals.

2) Does this way to actually do the conversion make sense.

The method I am trying is to load all of the .ts files into DGINDEX and save out an .m2v file.

Then use avisynth with the following script (to IVTC and then convert to 720P)

Code:
LoadPlugin("D:\programs\avisynth\DGDecode.dll")
LoadPlugin("D:\programs\avisynth\Decomb.dll")

MPEG2Source("robot.d2v")

Telecide(order=1,guide=0,post=0)
Decimate(cycle=5)
Crop(0,0,1920,1080)
BicubicResize(1280,720)

(Any alternatives to the above welcome)

So if anyone can see anything I am doing wrong, or could suggest an alternative codec that they have had success with for this particular usage, I would be most grateful.

[AlexeyS]

1) Will Divx or Xvid keep the quality high yet still give me smaller files than the .ts originals.
DivX and WMV9 will not give you HD quality. It's impossible. Xvid good with HDTV. The sharpest picture will give you VP7, X264 and Nero Digital AVC.

If the big files are not problem, then keep the original.

Telecide(order=1,guide=0,post=0)
Decimate(cycle=5)
Depends on movie. As for me - it's very hard to know right settings for correct telecine removal.

If you don't need the really best result, then try simple good deinterlacer (like TomsMoComp).

BicubicResize(1280,720)
I think LanczosResize will working better.

[Pookie]

"DivX and WMV9 will not give you HD quality. It's impossible."

Come on, Alexy. You don't really believe that.

http://www.divx.com/movies/detail.php?movieID=5

http://www.microsoft.com/windows/windowsmedia/content_provider/film/ContentShowcase.aspx

[AlexeyS]

"DivX and WMV9 will not give you HD quality. It's impossible."

Come on, Alexy. You don't really believe that.

http://www.divx.com/movies/detail.php?movieID=5

http://www.microsoft.com/windows/windowsmedia/content_provider/film/ContentShowcase.aspx
If you'll compare quality of real movies, you'll see WMV9 and DivX are extremely blurry.

DivX/WMV9 trailers looks great, because they choose beautiful movies like Coral Reef Adventure. But the MPEG2 or VP7 or AVC will look much better.

[Backwoods]

All a matter of opinion.