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Canon T1i 30 fps footage HD2SD issues
Hello, this is my first message on the forum.
I received for editing footage shot on a Canon T1i. The footage is 1280×720 at 30 fps (yes, 30). I’m on a Win7 64bits PC-based. I have edited this material in Adobe Premiere CS5.5 keeping the frame rate intact (I dragged the clips to conform timelines). I have no issues during this. However I had 2 issues later on.
The first issue is with the final output, which must include amongst other things, DVD (can be either PAL or NTSC). Since I know the downscale process is an important step for quality, for a while now I have adopted Dan Isaacs’ hd2sd as a part of my workflow, and it usually works like a charm. I rendered final project to MPEG2 I-frame 1280×720 keeping frame rate intact at 30fps. However this time around, I am pretty unsure how to write my avs script for best results, since the frame rate is… odd? Since the footage is close to 29,97 I believe that NTSC was the best way to go? Anyway, I tried this one:
SetMTMode(2,0)
MPEG2Source(“filename.d2v”)
hd2sd(interlaced=false, OutputColorSpace=”YUY2″)That gave me a 720 x 480 29.970 SD Lagarith Lossless. However once I compressed to MPEG2-DVD with HC Encoder and authored, audio went out of synch. I fixed the audio problem in Audacity, that wasn’t much of an issue, but now I am unsure whether I have somehow corrupted the frame rates in the process? Is it OK if I output to MPEG2 I-frame at 30fps? Or should I output directly to desired DVD frame rate from Premiere? Is it my script OK? Or should I convert to 24p instead of 29,97? What do you guys recommend?
The second issue is that it’s been decided the production we’ll continue and I’ll be receiving more footage. However, this time around the Canon T1i is no more, so they’ll plan to continue the shooting with a Canon 60D. I want to avoid any future problems, so my question, since I’ll be likely dealing with a mixed bag, is: what are the best settings to shoot with Canon 60D for this case? I know this isn’t the best situation but this has to be as cinematographic as possible. Resolution is also important since it features heavy FXs wich I do in AE (I rather do 1080 but I am on my way with 720). The specs for Cannon 60D say it records at 1920×1080, 1280×720, 640×480 and 30/25/24, 60/50, 60/50. Any advice/suggestions?
If anyone can help me out with either issue, I’ll highly appreciate it!
Federico.
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3 Replies
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First off:
Export from Premiere to AME.
Choose the mpeg2 DVD preset.
Let it match settings for you.
Slide the quality up to 7MB/s if there’s room on the disc.
Slide the quality bar to best/full.Make note of est. file size when done as you adjust the data rate.
Render.
Import A&V clips into Adobe Encore.
Make DVD.
View in Living room.
You’ll be fine.Second:
Going forward, if the new footage will be mixed with current, shoot 720p/30 – it’ll match, no fuss.Chris Tompkins
Video Atlanta LLC -
Hi Chris, thanks for your response, but I don’t really like the Adobe DVD preset. I recognize they have improved it over the years but I find HC Encoder much better. However I just update to CS6 and it seems they changed the AME output options a bit for good.
But my question was really more about that very small difference in frame rate (30 vs. say, 29,97). You mean is exactly the same? I read -actual- 30 was the framerate before color was added to NTSC video signals, but why did Canon used that instead of 29,97 or 29,976?Federico.
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29.97 was traditionally a interlaced format and your cam shoots progressive.
30p going to DVD will be 29.97p.
Chris Tompkins
Video Atlanta LLC
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