Deinterlacing question

[PurpleMan]

Hello everybody.

I recently transferred alot of PAL VHS content to huffyuv AVI using a capture card. My plan is to author the content to DVD. Should I deinterlace the video and encode it to a progressive mpeg2 stream or leave it interlaced and encode it as an interlaced stream?

I tried mulitple deinterlacing filters (kerneldeint, fielddeinterlace, telecide, tomsmocomp), but every single one of them either blurs the image too much or leaves artifacts.

I know that DVD players and HDTV sets do hardware deinterlacing when being fed an interlaced stream. Question is - do they act better than software?

In the end, when I playback on the TV, would I get better results with an interlaced stream or a progressive deinterlaced one?

(I'm also open to suggestions regarding avisynth deinterlacing and artifacts removal)

Thanks in advance!

[neuron2]

It's not possible to generalise here. Some TVs have crappy deinterlacers and some have superb ones.

Personally, I would leave it interlaced.

[scharfis_brain]

The problem you experience is the following:
you want to deinterlace to 25fps, while interlaced video contains true 50 fields per second.
TVs are deinterlacing to 50 fps to avoid motion problemens.

Artifacts are more obvious at 25fps than they are at 50fps.
(That's why interlacing works like it does :p )

[Pulstar]

Alright, so I have this WMV3 transfer vid that has ugly artifacts (the saw effect? possibly thanks to reducing res without deinterlacing first by the original encoder) and I can't seem to find a suitable deintelacer to remedy this. I don't have the original VHS so a re-transfer is not possible. Is there a way to make the artifacts less hideous?

[scharfis_brain]

you cannot fix this.
except: blur the video vertically until everything is unwatchable again.

[Infrid]

i transferred many VHS to DVD, i leave the video interlaced, is the best way for preserve the original quality.

[jjabba]

I agree, leave it interlaced, but consider these things in the process..


Some filters must be applied to the fields within each frame separately.
Make sure you MPEG2 encoder handles interlaced encoding
Make sure the field order of your video (bff or tff) matches the mpeg2 encoder's fieldorder option