Latest post Mon, Oct 28 2013 3:48 AM by Twosheds. 11 replies.
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  • Thu, Jun 13 2013 7:53 PM

    Repeated Frames on Quicktime Imports

    Hi All,

    I've been having a strange issue lately, for which I think I've found the reason but have yet to have find a solution.

    I have a project that is 23.976 and have been supplied graphics for the project by the client. When imported, Avid moves the first frame of the video to the end of the master clip! I opened up the clip in Quicktime and according to the Inspector it is labelled as 24fps and not 23.976. I then imported this clip into a 30i project and it was perfectly fine.

    Separately, we have another project that is 30i and have received a crop of Quicktimes that run the frame rate gamut from 29.97 straight through to 30fps (an anomally that occassionally happens when we receive QT's from clients and a problem for another day). When imported into Avid, certain clips work and others have a similar issue as the 24fps clips. However, unlike in the 23.976 project where the first frame is literally moved to the end, in the 30i project, it is simply a repeat of the first frame. Here is a breakdown of how those differing frame rates function in the 30i project:

    29.97 - WORKS

    29.98 - WORKS

    29.99 - REPEATED FRAME AT END

    30.00 - REPEATED FRAME AT END

    Now, when these same files are imported into a 23.976 project, there are not issues.

    Based on these two separate but similar instances, I can't help but to assume that Avid is not correctly interpreting the extremely slight frame difference of the clips in relation to the project.

    As a solution, I've tried re-exporting the problem clips from Quicktime with the project frame rate but they problems persists upon import.

    Any ideas?

  • Sat, Jun 15 2013 2:17 PM In reply to

    • TCurren
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    Re: Repeated Frames on Quicktime Imports

    What version are you running? Some of these import bugs were fixed in 6.5.2.1

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  • Mon, Jun 17 2013 2:21 PM In reply to

    Re: Repeated Frames on Quicktime Imports

    We are actually running Avid 6.5.2.1.

  • Thu, Jun 20 2013 8:43 AM In reply to

    • Tom Cooper
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    Re: Repeated Frames on Quicktime Imports

    I'm having the same problem importing 30p Quicktimes into a 59.94i project. I tried AMA file linking then transcoding. When doing this it tells me it needs to frame rate convert. This resolves the errant frame appearing at the end but ends up with my cilps being 2 frames short.

     

    Any updates on this?

    Media Composer 6.5.2.1 [view my complete system specs]
  • Thu, Jun 20 2013 1:47 PM In reply to

    Re: Repeated Frames on Quicktime Imports

    Unfortunately, I haven't found any solution yet. It is definitely a bit of an issue....

     

    Anyone?

  • Fri, Sep 27 2013 8:19 PM In reply to

    • Mike Fay
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    Re: Repeated Frames on Quicktime Imports

    I'm having the exact same thing happen to me. I'm running 7.0.1. Quicktimes are in DNxHD 175. I'll have to do some troubleshooting to figure out what's causing this. 

    MacBook Pro 2.4 GHz Intel Core i5; 8 GB RAM; OS 10.8.3; Media Composer v6.5.2 [view my complete system specs]
  • Fri, Sep 27 2013 8:25 PM In reply to

    Re: Repeated Frames on Quicktime Imports

    Mike,

    Since there are several questions in this thread, I'm not sure which one applies to you.  DNxHD 175 is a 23.976 frame rate.  Into what kind of project are you importing (or AMA'ing) into?

    Also, note 7.0.2 has been released.  A lot of bug fixes and you should consider installing.

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    -- Kevin

  • Fri, Sep 27 2013 8:43 PM In reply to

    • Mike Fay
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    Re: Repeated Frames on Quicktime Imports

    Thanks, Kevin. Sorry, I should have specified what I was responding to here. I have QTs that I import where the first frame ends up being placed at the end of the resulting master clip. 

     

    The QTs that exhibit this behavior are encoded with DNx @ 176 Mbps with a 24fps framerate. I'm importing them into a 1080p/23.976 project. I think the framerate mismatch is what's causing the system to misinterpret the footage on import and move the frames around -- although in the past I've only seen the system drop frames when dealing with a 24 / 23.976 situation. Which is why I requested the QTs be delivered at 23.976, so I wouldn't have any weirdness and I could fast import. So much for best laid plans! I'm going to try ignoring Qt rate and see how that works. 

    And yes, thanks for the reminder on 7.0.2. I should indeed upgrade! Mike

    MacBook Pro 2.4 GHz Intel Core i5; 8 GB RAM; OS 10.8.3; Media Composer v6.5.2 [view my complete system specs]
  • Fri, Sep 27 2013 8:50 PM In reply to

    • Mike Fay
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    Re: Repeated Frames on Quicktime Imports

    Setting the console to IgnoreQTrate true fixes it. Files come in frame for frame.

    MacBook Pro 2.4 GHz Intel Core i5; 8 GB RAM; OS 10.8.3; Media Composer v6.5.2 [view my complete system specs]
  • Fri, Oct 18 2013 3:53 AM In reply to

    • Twosheds
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    Re: Repeated Frames on Quicktime Imports

    I am having exactly the same issue in a 1080 25P project. The Quicktimes I am importing are also 25fps but I am still getting the first frame of the Quicktime appearing at the end of the imported clip. The Quicktimes are encoded as ProRes 422 HQ 25fps.

    I set the ignoreQTrate to true and the imported clips became even more problematic. The imported clips play in fast motion (2 to 1) then freeze on the last half of the clip.

    I re-exported the QTs with the Avid DNxHD 185x 25p codec and they seemed to import into Media Composer okay.

     

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  • Fri, Oct 18 2013 4:21 AM In reply to

    • mjolnarn
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    Re: Repeated Frames on Quicktime Imports

    Twosheds:
    I set the ignoreQTrate to true and the imported clips became even more problematic. The imported clips play in fast motion (2 to 1) then freeze on the last half of the clip.

    This was a bug that got fixed later on, maybe your 4,05 version was one of those not fixed versions

     

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    Tomas 

     

  • Mon, Oct 28 2013 3:48 AM In reply to

    • Twosheds
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    Re: Repeated Frames on Quicktime Imports

    Oops. Haven't updated my profile in quite a while, we are actually running MC6.5.4.

     

     

    Media Composer Ultimate 2019.6 and 20.8.0 Mac OSX 10.14.6 and 10.15.6 DNxIO and DNxIQ iMac 27" Late 2013 i7 16GB, iMac 27" 2019 i9 64GB MacPro... [view my complete system specs]
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