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I need help…aahhhh!!!
Hello All,
I’ve been a pro Avid editor for years and I’m jumping into Final Cut at home for various projects using Final Cut 6 and AVC HD footage which are both two new things to me.
SO, I have some questions right off the bat…and many more to follow.
First, I have some AVC files (.mts I think) that I’ve been taking in via the LOG AND TRANSFER tool on Final Cut. The thing that is confusing is this…my consumer level Canon Vixia HF-S10 shoots in 60i, 30p and 24p. Well although it says it shoots in 30p and 24p, everything records at 60i supposedly.
The footage I was dealing with last night was shot in 24p.
So when I transfer into Final Cut using PRO RES 422 the clip info tells me the frame rate is now 29.97 with upper field dominance.
What happened to the 60i that was supposedly 24p that Cannon talked about and how did my footage become 29.97 in Final Cut?
As well, the clip info in Final Cut tells me the Pro Res clip is “medium” quality as well when I look at the clip info. Does this mean that it need to be transfered in a higher quality…say HQ? It doesn’t give me that option dealing with this format. For AVC Intra it gives Pro Res HQ but for the AVC HD plug in it just says Pro Res 422 and then says the clip is medium quality. Does this mean that I’ve lost quality?
Right now everything is coming out with the dreaded spikes/scanning problems and I’m confused as hell. I wish I could stick with plain jane 720×486 but it’s time to jump into high def…even if for just projects on the side.
Does anyone have any insight????
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4 Replies
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You don’t need HQ. Medium doesn’t mean anything in this codec as it’s variable bit rate. ProRes is fine for AVCHD. You don’t need HQ unless the image size is larger than 2k.
60i is shorthand for 60 interlaced fields, i.e. 30fps, which is really 29.97fps. I believe your camera shoots 24p over 29.97, so the video actually is recorded at 29.97fps.
All the best,
Tom
Class on Demand DVDs “Complete Training for FCP6,” “Basic Training for FCS2” and “Final Cut Express Made Easy”
Author: “Final Cut Pro 5 Editing Essentials” and “Final Cut Express 4 Editing Workshop” -
Tom,
Thanks for your insight, it is greatly appreciated. There is a lot to learn with all that is HD.
I understand the 60 interlaced fields info, but I’m still a tad cloudy on how 24p is shot over 29.97 fps. Does this mean that some type of 3.2 pulldown happens as it records or is it just a simulated 24p? I do realize that is consumer camera but I was curious. For what it is, it does shoot some nice video.
Lastly, I was hoping for the film look with the test footage I was shooting.
The problem I’m getting currently is the “aliasing” jagged look around some of what I’m working with when outputting to MPEG-4 for web viewing.
This is a test that shows the problem I’m having…you really see it with the HD button on.
https://www.youtube.com/watch?v=WU_XeaybcVY
And here is another example of the same problem from a standard def thing I shot a while back…was down in After Effects and you can see the “aliasing” in the fonts used.
https://www.youtube.com/watch?v=eFEnocSkUB4
The standard def piece came from a raw uncompressed AVI that I had with “lower field first selected”. Do I need to select neither since it’s going on the web? I had saved this with the intent of eventually re-importing back into an editing system but when compressing it from the raw AVI with the “lower field” first..this was the result.
Thanks in advance to providing some insight. At my last job, I could do all of my side crap at work…now I work the feds so I have to do this at home!
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3:2 pulldown is added to the image to record it 24p over 29.97fps.
The second clip shows serious interlace problems. It looks like it wasn’t properly deinterlaced before or during the web encoding process.
Not sure what the problem is in the first image. It looks a little like a shutter problem or the way the pulldown is being added.
All the best,
Tom
Class on Demand DVDs “Complete Training for FCP6,” “Basic Training for FCS2” and “Final Cut Express Made Easy”
Author: “Final Cut Pro 5 Editing Essentials” and “Final Cut Express 4 Editing Workshop” -
I have the HFS10 and was trying to figure out how to get my files to play back in the Progressive format I had intended to have it recorded in. If you are using Mac you can drop all your 29.97 files into Compressor and use Reverse Telecine. Unfortunately, this means that you will have to convert each file twice. Which sucks, but you will be able to work directly in the progressive format.
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