Avidemux 2.4.4 best deinterlacer

[Kalash109]

Hi,

I have several questions about AVidemux. I've figured out how to trim the base of some VHS tapes that I imported
to mpg. This changes the file from 720x576 to say 720x568. When I author the dvd using Nero it seems to take a long time to encoding whereas if I dont't trim it only takes minutes. Is there any way in Avidemux of trimming the file but expand the trimmed file back to 720x576 ? I noticed a sort of movement blur on one video. Someone told me I had to deinterlace the file there are 7 options: yadif, mcdeinterlace, deinterlace, kerneldeint, tdeint, libavcodec, decomb. I tried yadif, the quality was good but I got flashing that wasn't on the VHS tape. I know the solution to all these problems is a full frame TBC. I put a £10 bid on ebay for one, the winning bid was about £100. I am sure one of these things would have far more capability than I need. How come none of the authoring packages like Nero/Cyberlink DVD suite 7 have trim facilities. I would have thought this was a useful facility since I have this requirement currently. Any help appreciated.

K109

[hech54]

Hi,

I have several questions about AVidemux. I've figured out how to trim the base of some VHS tapes that I imported
to mpg. This changes the file from 720x576 to say 720x568.

Try adding a black border.....that doesn't alter the actual size of the video.

[AlanHK]

I've figured out how to trim the base of some VHS tapes that I imported
to mpg. This changes the file from 720x576 to say 720x568.

In Avidemux:
Video
Filters
Transform
Blacken borders.

That will keep it the same size.

However, I think it will still take some time to encode, as any change to the video means that it will be reencoded to make a new MPEG.

[lordsmurf]

Someone told me I had to deinterlace the file"

"Someone" is usually wrong.
If this is for DVD -- NEVER DEINTERLACE!!!
If this is for web video, like Youtube, then deinterlace is needed, yes, a proper one. Most methods ARE NOT proper, especially not if it's just a checkbox.

Mask the entire overcan region in black. Yes, this re-encodes.

Interlacing and cropping/masking discussed here: http://www.digitalfaq.com/guides/video/capture-understand-sources.htm

[Kalash109]

Thanks for all the help. I'll try backening the border.

Regards
K109

[jagabo]

Someone told me I had to deinterlace the file there are 7 options: yadif, mcdeinterlace, deinterlace, kerneldeint, tdeint, libavcodec, decomb. I tried yadif, the quality was good but I got flashing that wasn't on the VHS tape.

Yadif is probably the best of those but deinterlacing usually leads to jaggy artifacts. Some work better with some material but worse with others. You'll have to test them yourself with your video.

I know the solution to all these problems is a full frame TBC.

Interlaced video will still be interlaced after a TBC. The deinterlacer may work a little better with the cleaner source though.

As others have pointed out, there is no reason to deinterlace if you are making a DVD. All DVD players support interlaced encoding and either the DVD player or TV will deinterlace if necessary.