How To Remove Ghosting From TV Captures?

[Samarita1964]

Sometimes,I see ghosting on TV recordings.Both on SD and HD Recordings.

here is few screenshots from the HD sample recording.
(Cropped & Resized to 720p)

http://i.imgur.com/b9YlX2g.jpg

http://i.imgur.com/4B0Y0IG.png

http://i.imgur.com/JlwP8Ka.png

Channel Logo on the top right and ads on the top left corner is static while the main video is full of ghosting.



Sample File (12 sec) (http://www.sendspace.com/file/8q3899)

[kypec]

IMHO the proper term for your above deficiencies is blended frames, not ghosting. Ghosting has more to do with analog domain problems and chroma/luma shifts...

[Warperus]

Probably it's blended frames due to deinterlacing, even though it might be a blending as a result of fps change (if you do it).

[Ghitulescu]

It's not ghosting (if it were ghosting would have seen it also around the logos).
It's an artifact due to interlacing/deinterlacing procedures.

[TheSkiller]

Yeah, it looks blend-deinterlaced to me as well.

If that's what it is then that's bad because it means half the motion fluidity is already lost, or to put it differently, the video has already been butchered by someone else. :p

[Samarita1964]

Thanks for the correction.

1. What is the difference between Frame Blending,Field Blending and Ghosting? I am confused,can you please explain in detail.

2. No,I didn't change the FPS,this is the raw recording which I uploaded,and from there I took screenshots,FPS is always 25.

My TV Tuner Card generally de-interlaces by its own,though I didn't find any options regarding int-Deint on settings menu on my Avermedia Tuner Card.
Actually,whenever I record any shows,and analyze it,both in Megui and on avisynth script,I don't get any sort of combing,it is progressive.
So,I leave the Deint part as Blank.

Can you suggest any filter which can remove blending & ghosting from this progressive recording.

Though it will be off topic,but I also want to know how to remove blending/ghosting from fully progressive DVDs,having 29.97 FPS frame rate,without any duplicate frame cycle.

[Asmodian]

Frame Blending is when you take two frames a blend them together, usually to change the frame rate.

Field Blending is when you take the two fields in an interlaced frame and blend them together to generate one progressive frame.

Ghosting is something in the analogue domain and is usually caused by signal reflections. The TV gets two copies of the same image slightly out of sync with each other.

This is somewhat oversimplified but fits in the context of your issue. There are a lot of places where frame/field blending is used.

Your screen shots show the classic look of field blend deinterlacing. As far as I know most sports is captured interlaced at 60/50 fields per second. It looks like your capture device (or something somewhere) deinterlaced the 50i video to 25p using field blending. I think it would be prefered to use a smart bob method to deinterlace to 50p.

You don't remove this, you can only prevent it from happening.

I have never seen fully progressive DVDs having 29.97 FPS frame rate without any duplicate frame cycle but with blending/ghosting. Are you sure you have a source like that? A small sample would help but I don't think there is anything you could do about it (besides taking it back to the store).

[StainlessS]

There is a small sample at foot of opening post.

[Asmodian]

I meant a sample of "fully progressive DVDs having 29.97 FPS frame rate without any duplicate frame cycle but with blending/ghosting".

[n0an]

I meant a sample of "fully progressive DVDs having 29.97 FPS frame rate without any duplicate frame cycle but with blending/ghosting".

Check this post (http://forum.doom9.org/showthread.php?t=166885) out. It has a sample in it.

[Asmodian]

Ah yes, a very nice production. :rolleyes:

Well that isn't really "fully progressive DVDs having 29.97 FPS frame rate without any duplicate frame cycle but with blending/ghosting". There is a duplicate frame cycle, it is just underneath a blend-deinterlace.

[Samarita1964]

I meant a sample of "fully progressive DVDs having 29.97 FPS frame rate without any duplicate frame cycle but with blending/ghosting".

Here is a sample.

http://www.sendspace.com/file/mbv48g

[Asmodian]

Isn't that just "normal" 23.976 telecined to 29.97, blend deinterlaced, and then edited? Or maybe 25fps telecined to 30? I notice some deinterlacing artifacts and have trouble determining the cadence. I guess I meant without a duplicate frame or field cycle as the normal 23.976 to 29.97 telecined video doesn't have duplicate frames but does have duplicate fields.

You might start with srestore (http://forum.doom9.org/showthread.php?t=95924)?

[Sharc]

I don't think that this can be fixed any more.