Deinterlace video

[charlesn73z]

I want this video to be totally progressive, which filters do you recommend?

[jagabo]

Mpeg2Source(...)
TFM()
TDecimate()

There is that one shot at about 45 seconds into the clip (camera rotating around a grey statue) that's frame blended and 29.97 fps. If you want to keep that and encode at 59.94 fps use:

Mpeg2Source(...)
Interleave(TFM(field=1,pp=0), TFM(field=0,pp=0))

[sanlyn]

Yep. I was going along OK with script #1 myself, until I got to the scene in question. I figured there would be a trick to it, so I'm off to the TIVTC documentation. Thanks for the script.

[charlesn73z]

I tested with another video, and realized that some frames were not deinterlace.

[jagabo]

The only place I saw comb artifacts after TFM().TDecimate() was in the fade-from-black at ~44 seconds into the clip. That fade-in was done on interlaced video so every field is different (although it's still normal 3:2 pulldown from the film frames).

Since each field is slightly brighter than the last TFM() can't find a perfectly matching field -- so it uses the closest match, a slightly brighter or darker field. Adding vInverse() to my earlier script will blend away those comb artifacts:

Mpeg2Source("VideoFile.split.2.d2v", CPU=6, Info=3) 
Interleave(TFM(field=1,pp=0), TFM(field=0,pp=0))
vInverse()

Removing the "pp=0" arguments usually gets rid of those residual comb artifacts, but didn't work in this case because they are too light. I try to avoid enabling pp (post processing) in TFM because it sometimes makes mistakes -- especially in animated content.

Or you could full QTGMC():

Mpeg2Source("VideoFile.split.2.d2v", CPU=6, Info=3) 
QTGMC(preset="fast") # or whichever preset you prefer

The fade from black will be a little smoother with QTGMC() but it sometimes causes a little ghosting:



On the left is Interleave(TFM(field=1,pp=0), TFM(field=0,pp=0)). On the right is QTGMC() -- you can see dark lines ghosting from the next frame. QTGMC() sometimes leads to other small distortions.

[charlesn73z]

I solved the problem by using:


TFM ()
TDecimate ()
Vinverse ()


Now, I want to solve another problem identified in the video:
The outline of the picture is bad, perhaps because of the compression. How do I leave them well defined, as are the video before the encode?

[jagabo]

I solved the problem by using:


TFM ()
TDecimate ()
Vinverse ()

That will make the 30p and 30i sections jerky.

Now, I want to solve another problem identified in the video:
The outline of the picture is bad, perhaps because of the compression. How do I leave them well defined, as are the video before the encode?

I didn't see much difference. Do you mean the black outlines? Can you point to a particular frame that has the problem. Provide a screen shot?

[charlesn73z]

I solved the problem by using:


TFM ()
TDecimate ()
Vinverse ()

That will make the 30p and 30i sections jerky.

Now, I want to solve another problem identified in the video:
The outline of the picture is bad, perhaps because of the compression. How do I leave them well defined, as are the video before the encode?

I didn't see much difference. Do you mean the black outlines? Can you point to a particular frame that has the problem. Provide a screen shot?

Yes, they are the black lines. In endode they are blurry, the original video is normal. Only one realizes that seeing the videos.

[jagabo]

Use a sharper resizing filter. Or leave the video at its original frame size and specify the SAR in x264.

[charlesn73z]

I used:

TFM ()
TDecimate ()
Vinverse ()
crop (4, 0, -2, 0)
Spline36Resize (960.720) # Spline36 (Neutral)

Solves the problems of the lines, however, generated macroblocks in the video.

[jagabo]

That's because your source is full of macroblocks. A sharp resizer will enhance them. Use a deblocking filter. Like Mpeg2Source()'s CPU=6. Or AviSynth's DeBlock_QED().

[charlesn73z]

By doing resize, I noticed that the colors of the video have been changed, why?

[jagabo]

Maybe your players switches to rec.709 colors when playing videos over 720x480? Maybe you're playing two videos at the same time, one is using video overlay, the other not? Spline36Resize() would not change the colors.

[charlesn73z]

Maybe your players switches to rec.709 colors when playing videos over 720x480? Maybe you're playing two videos at the same time, one is using video overlay, the other not? Spline36Resize() would not change the colors.

I do not know. Do you know how can I deinterlace this DVD without having to encode the video?
Is there any player or another method?

[jagabo]

Almost all players can deinterlace during playback. VLC for example:

[charlesn73z]

This DVD they can not, I've tried with MPC-HC, VLC, SPlayer, I set the codec for desentralaçar, but it's pointless.

Almost all players can deinterlace during playback. VLC for example:


[Attachment 22058 - Click to enlarge]

That was the first thing I did, to no avail. Must be something wrong with my PC?
On your computer can deinterlace?