I'm working on a show with a cluster flop of bad media management of Canon 5D material. Somehow they managed to transcode the material to 10:1 for offline without proper timecode and often no reel numbers to help with relinking later. I'm not sure what the field workflow was but I thought Canon H.264 files don't really have time code but rather a time of day stamp. Isn't that what QT change and maybe other apps use to derive a start time code for the media files. These source files appear to be long 20 to 30 minute files. When we ama link to them they have time code that seems to reflect time of day as each file in a series has ascending time code. Would this mean that the files have been preprocessed to have time code? I can't understand what they did wrong on the initial transcodes of the files that give many of them a zero starting time code and not the time code we find on the files when we ama link to uprez. I've been able to modify
the timecode to get some of the clips to work but I'm still curious how the time code exists on the original source files. Do Canon H.264 files natively have time code or was it processed in later?
Now the other question that arose today was a field order issue that was caused by an improper QT export from Avid. I don't think this was an Avid problem but a "Head Phone Separator" issue. Somehow the AE's managed to export a DNX 220 QT .mov with reversed field order. I believe this was caused by the fact that they couldn't export a same as source QT because Avid errored saying there was some long GOP material in the timeline and that they would have to use a custom export setting or transcode the media. I guess they went the custom setting route but set it to even lower field first. When I ama to the file they made it is clearly reverse field order but I can't right click and adjust the field order in the source setting box. Avid tells me there is no such source setting option for this type of media. I assume because the QT .mov is Avid DNX 220 Avid doesn't think I should be able to adjust the field order when ama'ing to it. Is this
true. I know I can adjust the ama'd field order on Avid SD 1:1 files that I export from Avid as a QT ref and use QT Pro to make a self contained .mov in Avid uncompressed SD. Is this not the case with DNX .movs?
John Moore
Barking Trout Productions
Studio City, CA
bigfish@pacbell.net
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