This IS the Avid L2: [Avid-L2] Re: Can't Modify Source on AMA clips prior to transcode

Friday, August 24, 2012

[Avid-L2] Re: Can't Modify Source on AMA clips prior to transcode

I've run into a similar issue when dealing with FlipCam footage. The clips were true 30 and would not allow us to add a tape name because the project was 29.97. Tried using QT change to alter the speed but it didn't work and QT change prompted that the speed change was not recognized by some NLEs. Cinema Tools was not an option because it was not an I frame codec. Does anybody know of an app that will allow you to alter the .mov frame rate in a manner Avid will recognize. Does Clip Wrap do that? Sounds like you are having a similar issue because of the way DVCPro HD records 59.94 frames with pull down so even though there are only 23.976 unique frames Avid sees all 60 when it comes to adding a tape name and rejects it. Perhaps you could open a matching project 720/60 and modify the tape name in that then open that bin in your 23.98 project. Just a thought.

--- In Avid-L2@yahoogroups.com, "michaeljshen76" <mikejshen@...> wrote:
>
> I'm testing out an AMA workflow. I have test footage including P2/DVCProHD (720p 23.98), Sony AVC Intra (1080i 29.97), and Canon DSLR (1080p 23.98).
>
> My workflow is to link to AMA volume, transcode, edit, and relink to AMA originals to up-rez.
>
> Based on suggestions I've found here and elswhere, as a precaution, I'm trying to Modify Source on the AMA clips prior to transcoding, to help the Avid relink by giving the clips a tape name. Works fine on the Sony and Canon files. But the P/2 files give me this error:
>
> Exception:
> >SMReturnTapeMobOffset: sourceMob editrate (60) does not match tc
> >editrate (24).
>
> I also noticed that the metadata for these P/2 clips identify the Format as HD 720p/23.976, but the video as DVCProHD (720p/60).
>
> Search of the L2 and web reveal other reports of this problem, all years old, none with any answers that don't involve tape decks.
>
> Any ideas? I tested the workflow and everything relinked, even without Modifying Source; but I wonder if it will go as smoothly with more AMA volumes and a more complicated sequence. I'd like to head off any trouble at the pass.
>
> Thanks!
>