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30p drop frame and 60i non-drop frame in multicam mode
Hi,
We had shot a 4 day event recently with an XL2 shooting 30p and a Sony PD-150 shooting 60i. This was NOT intentional and we won’t go into why that happened. We had done a rough time code sync with free-run mode on both cams and time code was in sync within 1 second. We used a audible clap at the beginning. I realize now that a visual clapboard would have been ideal but that’s what we have.
After a day went by the time code seemed to drift about a second, the PD-150 time code was ahead by quite a bit. At first I thought it was 60i vs 30p but then checked the time code settings on the Sony PD-150 and dropframe/non-drop frame was set to auto. Auto is unclear in the PD150 manual but FCP is showing the clips as non-drop frame.
I need to edit these clips in multi-clip mode and I guess that means converting either the 60i/non-drop or 30p/drop clips to match the other ones so I can edit in timeline.
I need to keep time code so I can do rough syncing and fine tune from there.
Question 1 – Will I be able to achieve proper sync throughout the footage if I remove frames from the 60i/non-drop? Or will I experience more drift?
Question 2 – Should I convert the 30p/nondrop to 60i/drop or convert the 60i/drop to 30p/nondrop. The final outout will be dvd.
Thanks for any feedback, suggestions, comments!
Elijah
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15 Replies
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You don’t need to worry about converting drop to non drop or vice versa. Your footage is shot at the same rate (29.97) so there’s no reason to ‘remove fames’. Your tc will drift a little over time but it shouldn’t be too much of an issue. I’d just start editing and don’t worry about it too much. Your bigger problem is going to be how to interlace the progressive footage or deinterlace the interlaced footage to make the camera look more similar to each other.
Jeremy
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Hi Jerome,
Thanks for replying.
When I try to select to clips and make a multiclip sequence the resulting multiclip in the sequence only shows one of the clips in a 4-view mode. In the user manual it said all clips had to be the same framerate. I guess I am a bit confused still. You are saying that all DV footage is captured at 29.97 fps?
What is weird is that even though FCP indicates the 30p footage is drop frame with the ; before the frame numbers when I scroll though the footage no numbers jump like I am guessing they should.
Also you say that drift is normal? This is kinda scary, I would think that the 2 clips would eventually go out of sync and the master audio track I use from the XL2 would not sync up with the video from the PD-150.
1 – So drop fram vs non-drop really don’t matter or have an effect on timecode sync?
2 – Why aren’t both clips do not appear in my multiclip?
Thanks
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[Elijah Lynn] “When I try to select to clips and make a multiclip sequence the resulting multiclip in the sequence only shows one of the clips in a 4-view mode”
Drop and non drop have the exact same timing. Drop frame does not mean frames are actually dropped. They are both 30 fps video, it’s just the tc numbers that get dropped, not the actual frames of video.
[Elijah Lynn] “before the frame numbers when I scroll though the footage no numbers jump like I am guessing they should. “
It depends on the timecode and where it started.
[Elijah Lynn] “Also you say that drift is normal? This is kinda scary, I would think that the 2 clips would eventually go out of sync and the master audio track I use from the XL2 would not sync up with the video from the PD-150. “
TIMECODE drift (as drop frame and non drop will have different numbers eventually). Audio and video should be perfectly in sync.
[Elijah Lynn] “2 – Why aren’t both clips do not appear in my multiclip? “
Don’t know. Have you set it up properly? If you have two angles, there’s no reason to multiclip really.
Jeremy
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The reason to multi clip is so I can see both angles playback simultaneously and pick best cuts.
Unless I am missing something obvious.
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Well, you can do a split screen with two angles (scale each track down 50% then move them to opposite sides of the screen). It’s much easier and less finicky then multicam if you only have two angles.
Jeremy
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Thanks Jeremy!
That may make this way easier. I am trying now (for 5 minutes). I am not entirely following what you are saying, if you have a moment more can you be more detailed.
I will probably eventually figure it out but how long that takes is yet to be known!
Cheers,
Elijah
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Take a clip in track 1 and double click it to get it up in to the viewer. Set the scale for 50% and the center value for -320,0. Then, take a clip in track 2 that is in sync with the clip in track 1 below it and scale that one down 50% and set the center value for +320,0. Copy and paste attributes to all the different clips from the same angle.
Split screen.
Jeremy
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Thanks for clarifying that Jeremy. I will play with that and see what happens. I was able to get multi-clip working (had to set sync).
I am interested in trying your method, does this playback both clips at the same time as well?
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Yes.
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Thanks Jeremy.
I have got this working by setting the scale attribute to 50% center attribute of the motion tab to -180 and 180. Where did you learn this. I would like to learn more about this style of multicam editing abd the tricks that go along with it.
Thanks
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