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Timecode math
Got a situation here. I had 5 hours of 29.97 footage mistakenly captured as if it were 24Pa. I proceded to fine cut the whole 25 minute project under those conditions, unsing a 23.98 sequence and source footage interpreted as such. That’s what the file read.
The odd interlacing issues were dismissed by me as playback issues.
I eventually realized I had a problem with the original capture. Even idiots have their moments. I went back to the place that made the orignial mistake and they agreed to recapture properly, that is, at 29.97.
So, what I’d like to do now is click a magic button and have all of the new 29,97 footage automatically cut itself up neatly and hassle-free to match the previous, 23.98 fine cut.
Not likely to happen.
But is there a methematical formula (like, I dunno, x 1.25) that I could apply manually to my older, 23.98 timecode ins and outs, resulting in a matching set of 29.97 ins and outs?
I realize the frames may not always match perfectly, but I’m looking to ease the pain. Any advice is appreciated.
SGM
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3 Replies
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Well, let me start by asking if there was any attention made to the original timecode on the tape?
If the footage was batch captured, it should be as easy as replacing the clips in your original project, which some fine tuning at he end.
If these were just straight captures from whole tapes, and the original timecode is there, then my method below will work, but if you have more than 10 separate clips, it’s going to be a real pain.
This is what I would do, understanding that someone may have an easier way out of this.
First save your project for back up.
Import the new first captured clip in your old project, keeping the old captures as well.
Double click on your old footage from the first tape to bring it to the source window. Note the timecode In and Out down.
Now, bring the new footage from the first tape in the source window. Make In and Out points that match the old one.
Right click on the source window and choose make subclip. Now, create a new sequence, drag the subclip to it, and export to AVI. You should then be able to right clip on your old clip and replace it with the new one.
Repeat for all other captures.
Vince
What about just replacing the footage with the new capture in your project?
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[Vincent Becquiot] “Right click on the source window and choose make subclip.”
Off the top, I can’t see how this works. I’ll have try it, step by step, and see what happens (I’ll start by looking up “subclip” in PP Help).
Incidentally, that new footage won’t be ready until the weekend. So everything is simply about the information at this point.
More about my time code: The footage was captured as 1 tape = 1 file. The same will be true of the new, forthcoming 29.97 captures. These are big files and have to be split via AVI splitter prior to PP’s import. (I never did figure out how to import bigger than 4Gb).
In any case, the splitter creates it’s own time code. Each new “chunk” starts at zero. Again, this applies to both old and new versions of my capture. This is why everything has to be done manually, I’m afraid.
But tell me if you think this might work: I interpret my new 29.97 source footage at 23.98 and I drop it into a 23.98 sequence. I mark my ins and out. Then, I reinterpret both source and sequence up to 29.97.
What will happens to my ins and outs if I do this?
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The splitting will make things much more difficult. If the originals were split as well and lost their original timecode then skip to the last paragraph.
Are you able to put the entire tape on the drive?
If so, then there shouldn’t be any issues importing it. If the problem is with putting the file on the drive, it’s probably because it isn’t formatted to NTFS; it was common for a while for external drives to be FAT formatted.
You definitely want the original timecode so that you can match the IN and OUT from the old clip.
The reason I create a subclip out of the new footage is to create a new clip with exactly the same IN and out as the original. I don’t believe that the old clip can be replaced by that subclip, so an export of that clip from a new sequence is necessary to create an identical file to the original. Then simply tell Premiere to replace th old clip so that you can tell Premiere to replace it.
If the original one was split as well, and you are sure that the original timecode wasn’t kept, then you’ll have to match the 4 clips as close as you can frame by frame, reproducing the IN and OUT for each to match the originals (not for the faint of heart). Then export each one separately and replace the originals with the new export. The best the matching the less you’ll have to fine tune. Since I don’t know what kind of footage it is, it could be easy or quite difficult.
let me know how that goes.
Vince
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