Vegas and Canon HV20 24p

plasmavideo wrote on 6/25/2012, 8:50 AM
I'll be getting some footage on tape from this camera for editing. It apparently was shot in 24p.

My understanding from some quick web searches is that this camera uses a weird 24p mode.

How does Vegas handle footage from this camera? Will I need any type of pre-processing to make it work properly?

Anyone have any experience with this?

I have various versions of Vegas up through 10 that I can use.

Thanks.

Comments

robwood wrote on 6/25/2012, 9:11 AM
years ago but don't recall having any problems with HV20 24fps footage on the timeline... probably using Vegas 8, maybe 7.
videoITguy wrote on 6/25/2012, 10:12 AM
You should have no trouble using Canon's 24p progressive format - it equates well enough for the 24fps of the film camera type. Hence if you keep yourworkflow through VegasPro as 24 (23.976) and push out for a stream to DVDArchPro - you could write a 24P Blu-ray disk.

Depending exactly on what you do, you can write a DVD, but it will have to be translated by the set-top player as interlaced footage which is usually not a big deal.
jimingo wrote on 6/25/2012, 10:31 AM
You must remove the pulldown before bringing footage from the HV20 in to Vegas or the footage will look like crap. This has to do with the way the HV20 records the 24P footage. Canon fixed this with the HV40 but working with footage from the HV20 is a pain.
Here are some ways to convert the footage
http://eugenia.queru.com/2007/07/13/canon-hv20-24p-pulldown/

I haven't used footage from the HV20 since Vegas 8 so maybe Vegas 10 will see the footage differently but I doubt it. Here is a way to check.
Bring the footage in to Vegas. Right click on it. If the footage reads as 23.976, you are good and the footage does not need to be converted. But if it reads as 29.97 then it needs to be converted.
plasmavideo wrote on 6/25/2012, 10:35 AM
I'm not sure yet how this is all going to shake out. There was some talk of mixing in some 29.97 footage, and some talk about DVD and also web delivery. This is all in the preliminary stages, so I'm doing homework before getting blindsided by a deadline.

The final may end up as 29.97. in which case I'll have to deal with pulldown problems, but hopefully it can be all kept in 24p to avoid issues.

I remember reading at some point that the Canon footage was not 24p, but some variant of 24p over 59i, and that it was heard to use. I need to do some more googling.

Hopefully I'll have some time to play before the project actually hits crunch time.

Thank you.
jimingo wrote on 6/25/2012, 10:54 AM
If the final is 24p, you will have to deal with the pulldown. That's where the issue exists. I used to do this all the time.

If the final ends up 29.97, you probably won't have to deal with the pulldown because Vegas reads the HV20 clips as 29.97.
R0cky wrote on 6/27/2012, 5:40 PM
Cineform can unbutton it for you. Not sure if the free GoPro studio version can but the next step up does. It will capture from the tape and convert it to real 24p at the same time as well as transcode to the cineform codec.

rocky
videoITguy wrote on 6/27/2012, 8:03 PM
Bastinado, you have a very good point. I don't shoot 24p often but when I do its with top-end Canon equipment and the only way to handle it is to use HDLink app and Cineform to capture. Then use Cineform files for intermediate and timeline editing. Vegas capture isn't even functional to do this. I use 24p in film applications and it cannot be beat for Greenscreen.