1080i to 24p?

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spunkme99

Active member
I am preparing for my documentary, most likely going with the XH A1. Now I just need to determine what mode is best.

I love 24p (24f), that's what I want my film to look like in the end. But a friend of mine told me that I can easily make my 1080i footage progressive in post - add a deinterlace filter in final cut, then pick certain settings in compressor - and boom 24p.

Is this recommended?

This documentary is the most important thing I'll be working on for the next year, and I want to decide now what format, settings, etc, that I'll be shooting in. Anyone done this? Would anyone do this?

Thanks!
 
spunkme99 said:
I am preparing for my documentary, most likely going with the XH A1. Now I just need to determine what mode is best.

I love 24p (24f), that's what I want my film to look like in the end. But a friend of mine told me that I can easily make my 1080i footage progressive in post - add a deinterlace filter in final cut, then pick certain settings in compressor - and boom 24p.

Is this recommended?
Click to expand...

No. 24F already does an excellent job without losing too much resolution. A 60i conversion to 24p is never perfect especially with a simple deinterlacing filter, which simple doubles the field and cost you 50% vertical res. That's why there are softwares such as Magic Bullet Suite that are written specifically for this; and even then you still lose resolution and the render time with HDV is going to be horrendous.
 
So I guess in a pinch this might work...but, I'm not in a pinch.

Good to know. He just dropped this on me today.

What's confusing me now is if you shoot 1080i 24F ----- does that look 1080p? But then, some people can also make this 1080i 24F footage 720p right - why? (just got into researching HDV, my head hurts)
 
1080p is a misleading term since not all 1080p is the same. 1080p from a CineAlta will be higher res than 1080p from the HVX for example. What it means is that you're shooting at a certain resolution (1440 x 1080 or 1920x1080) and capturing progressive footage. 24F mode gives you progressive footage at 1440 x 1080 resolution; hence it's 1080p.

1080i 24F is a redundant term, but perhaps accurate because the A1 chip scans natively interlaced and then deinterlace to progressive; but the end result is the same.
 
Thank you for laying some knowledge me Jade. One more question: I know the HV20 has issues with 24F when it comes to editing, is this the case with the A1?

So far the method I have found for the HV20 is capturing, using Jes_deinterlacer, then starting another sequence in FCP. In Vegas some success doing the same with TMPGE Xpress.

Will the A1 be hassle free when it comes to 24F?
 
spunkme99 said:
Will the A1 be hassle free when it comes to 24F?
Click to expand...

Pretty much. If you have a fast Mac the latest FCP works like a charm. And if you don't like native HDV editing, it's easy enough to transcode (with original timecode) to ProRes and get better multi-stream real time HD performance.
 
spunkme99 said:
One more question: I know the HV20 has issues with 24F when it comes to editing, is this the case with the A1?
Click to expand...

It's not going to be a problem. 24F and 24p on the HV20 are two completely different processes. The 24p issue on the HV20 comes from the fact that Canon failed to put pulldown flags so that the NLE knows which excess pulldown frame to remove. 24F on the A1 is captured as a 24 fps progressive stream with no pulldown.
 
Where do I set 24F? All I see is 24P in 1080 mode. Is there some other setting that I need to change to get 24F?
 
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