Deinterlacing issue with full HD

[Steve Eisen]

No need to de-interlace.

Steve Eisen
Eisen Video Productions
Vice President
Chicago Creative Pro Users Group

[Neil Patience]

As per Steves comment – not sure why you need to de-interlace. The de-interlace filter on FCP is not the most “subtle” of deinterlacers. You will likely degrade your footage if you use that.

best wishes
Neil
http://www.patience.tv

[Julienne Rathore]

Thank you both of you!

I am still a little confused though.
I understand that you both say I should not add the de-interlace using the video filter in the fcp effects, but what about the issue of the compressor – it is automatically checked ‘on’ as ‘interlaced’ – should I uncheck this?

And my footage is interlaced footage – should I not de-interlace it at some stage?

how would you export the finished product?

Thanks again!
Julienne.

[Neil Patience]

Agree with Dave – plus de-interacing is not a standard requirement, of course it may be that you prefer the look or your delivery requires it
Let us know where your programme is going and that will likely shed some light on whats best do do.

best wishes
Neil
http://www.patience.tv

[Julienne Rathore]

Sorry!

My project is first of all going to film festivals – its an experimental full length feature film.

Do you think I should leave the footage interlaced?
I was always under the impression that progressive was superior to interlaced (unfortunately I didn’t have my XDCAM with me when filming this project, so it is full HD 1080i).
I also assumed that de-interlacing interlaced footage was better than sending off a final project as interlaced…

Footage is Apple ProRes 422 and my system settings have Apple ProRes 422 as compressor for quicktime video settings. Don’t understand the checked ‘interlaced’ box in ‘advanced’. There is also an unchecked box titled ‘Enable 4:4:4 chroma filtering’…?

Default has the ‘interlaced’ box checked – should I concern myself with this?

And yes, please if you would suggest how you would export it.
I would export it using compressor to create a dvd (to send to festivals), but this checked ‘interlaced’ box concerns me…and I am also definitely confused regarding whether or not to de-interlace the whole thing now….

Thank you!!!
julienne

[Julienne Rathore]

Frame rate is 50i (full HD 1080i, imported via FCP as Apple ProRes), the camera is not capable of shooting progressive scan and I shot interlaced.

This is all getting me very confused – I normally de-interlace my footage if/when I shoot interlaced (does not happen often).

I have not checked for technical entry specifications regarding interlaced vs de-interlaced – I am not 100% sure which festivals I am entering yet, but have previously entered projects shot on progressive as well as 1 project shot interlaced. The interlaced project I de-interlaced before submitting.

Where else this project may go depends on how it is received – hopefully it will be of further interest somewhere.

Thank you,
julienne

[Julienne Rathore]

Are my sequence settings wrong? should this checked ‘interlaced’ box be unchecked?

thanks,
julienne.

[Julienne Rathore]

I have removed the de-interlace video filter applied from the FCP effects from all clips and the footage is all slightly sharper (looking at it in fcp). It does not seem to be interlaced either. I do not completely understand. The original imported footage (Apple ProRes) is most definitely interlaced (have checked several times)….
Is this possibly due to the ‘interlaced’ box being checked in the advanced section under compressor in sequence settings?

Do hope one of you creative cow gurus can help me with these issues – it looks fine (better than previously even, as I said), but I am confused…

Thank you!
Julienne.

[Julienne Rathore]

Upon export the footage is most definitely interlaced and does not look good – looks much better with the de-interlaced filter on. But maybe there is a better way to de-interlace it? It remains true that in FCP the footage looks sharper (and does not appear to be interlaced) than with the filter on.

So I am back to my original question which was about the ‘interlaced’ box in advanced settings under compressor in sequence settings.
I had never noticed this before (usually work with XDCAM footage), and it threw me. It is checked on as default and I was wondering what this did to my footage and whether it would be better to uncheck it?

I am extremely interested in any further information regarding best options when editing with interlaced footage.

Thank you again!!
julienne.

[Andrew Kimery]

[julienne rathore] “I have removed the de-interlace video filter applied from the FCP effects from all clips and the footage is all slightly sharper (looking at it in fcp). It does not seem to be interlaced either. I do not completely understand.”

FCP will only display one video field in the Canvas window unless the Canvas window is set to 100%.

[julienne rathore] “Upon export the footage is most definitely interlaced and does not look good – looks much better with the de-interlaced filter on. But maybe there is a better way to de-interlace it? It remains true that in FCP the footage looks sharper (and does not appear to be interlaced) than with the filter on.
“
If you watched it on your computer the interlaced movie will look bad because computers by default cannot properly playback interlaced video.

The benefits of progressive vs interlaced primarily happen during shooting. Shooting interlaced then deinterlacing in post will not yield the same results and could very easily result in footage that looks much worse than the interlaced source material. As others here have said, you should only deinterlace your material if you have a specific need to do so and you shouldn’t use FCP to do it (a program like Compressor will do a much better job).

For example, ff you are uploading a video to YouTube you should deinterlace your output because, like I said before, computers have problems playing back interlaced video. For a festival you should talk to the festival organizers and ask if they can properly project interlaced material. If so, just give them an interlaced copy of your movie as a properly displayed interlaced version of your movie will look better than a deinterlaced version.