Proper Resizing and maintaining aspect ratio with Avisynth

[jagabo]

I would resize the clip to 720x480, encode at 25 fps progressive, then use DgPulldown to add 3:2:3:2:2 pulldown flags. The other option is to resize to 720x480, AssumeFPS(24000,1001), and encode with regular 3:2 pulldown flags. But that will require that you slow the audio down too.

[Radio Radio]

I would resize the clip to 720x480, encode at 25 fps, then use DgPulldown to add 3:2:3:2:2 pulldown flags.

Nice, thanks jagabo.

[jagabo]

Note, I added another option.

[Radio Radio]

Note, I added another option.

I'll try both ways and see which one works better. Thanks again.

[jagabo]

Oh, I forgot to add that the MPEG 2 encoding should be flagged as 16:9.

[Radio Radio]

Yet ANOTHER question about resizing. (Again, I assume continuing this thread is better than starting multiple threads).

I have a 1280x720 avi file that I want to resize and convert to MPEG 2 with HC Encoder.
This is what I thought would work well:

AvCSource("C:\video.dga")
Spline36Resize(720,480)
Colormatrix(mode="rec.709->rec.601")

So, veterans, is this a good script?

[poisondeathray]

AVCSource is depreciated, it can have decoding errors other problems, use another source filter like FFMS2

Typically you add clamp=0 for colormatrix (otherwise it will clip Y' 0-15, 236-255)

Also is this 1280x720p23.976 or some other frame rate ?

[Radio Radio]

AVCSource is depreciated, it can have decoding errors other problems, use another source filter like FFMS2

Typically you add clamp=0 for colormatrix (otherwise it will clip Y' 0-15, 236-255)

Also is this 1280x720p23.976 or some other frame rate ?

yes its 23.976 fps

As for the Spline36Resize(720,480), is that an acceptable resize?

[poisondeathray]

AVCSource is depreciated, it can have decoding errors other problems, use another source filter like FFMS2

Typically you add clamp=0 for colormatrix (otherwise it will clip Y' 0-15, 236-255)

Also is this 1280x720p23.976 or some other frame rate ?

yes its 23.976 fps

As for the Spline36Resize(720,480), is that an acceptable resize?

Yes, for NTSC DVD . Encode it with 16:9 flags

[Radio Radio]

AVCSource is depreciated, it can have decoding errors other problems, use another source filter like FFMS2

Typically you add clamp=0 for colormatrix (otherwise it will clip Y' 0-15, 236-255)

Also is this 1280x720p23.976 or some other frame rate ?

yes its 23.976 fps

As for the Spline36Resize(720,480), is that an acceptable resize?

Yes, for NTSC DVD . Encode it with 16:9 flags

Ok. Thanks for the help!