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QT REF movie export often fails
I have found that when working with 1080i 2997 footage, repeating a clip within a FCP sequence window set to the clip parameters, and then exporting the sequence as a QT Reference movie, will make FCP recompress the sequence into a new movie rather than just make a reference movie.
Is this related to Interlaced files only? I’ve done the same with progressive footage and FCP appears to be able to make QT Reference movies with repeated progressive clips.
2d isn’t dead yet!
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10 Replies
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Sounds like you timeline settings don’t match. If the file exported is big, that means it had to render something (like an effect). Perhaps your timeline was set to progressive and you put interlaced footage into it and it has to transcode?
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It sounds to me as if Kurt isn’t completely familiar with the render settings and with the concept of realtime in FCP.
Kurt, if you click on Sequence — Render All, have you put a check mark by each and every one of the choices there, especially “Full”? My guess is no, you haven’t… If not, your sequence only appears to be completely rendered, when in fact its not.
The default for some really silly reason is unchecked, so you need to manually check it every project, then do a render all, otherwise everytime yu export you’re also doing the final render too.
David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los AngelesPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.
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I assumed dragging footage to the timeline / sequence took care of progressive .vs. interlaced.
Is that true?
Or do I have to handle interlace settings manually on the timeline?
I checked the clip statistics in the clip inspector window and they seem to match the timeline.The procedure I did was make a project that matched the clip as closely as it could (interlaced, same frame rate, same clip x-y size), then import the footage, then drag it to the sequence timeline and if FCP asked it to change the settings, allow it to do so.
2d isn’t dead yet!
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thanks David.
I looked at the render settings and for RENDER ALL every checkbox is turned on, including FULL. I tried RENDER ALL, which “blipped” the app but did no rendering (the timeline parameters appear to be the same as the clip’s).But when I try to render a QT reference movie with the “recompress” checkbox unchecked, FCP still tries to render a complete movie, not a reference movie.
I also tried using a completely different codec in the settings to convert the timeline to another codec. Trying to render a QT Reference movie of this failed as well – once again, FCP insisted on writing the entire sequence as a .mov instead of just a Reference movie.
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Try the Render Manager and delete all renders in that timeline and then re-render.
David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los AngelesPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.
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removed all previous renders, then told FCO to RENDER ALL (all the checkboxes are selected). FCP “blipped” and rendered nothing. Tried the QT export again making sure current settings, audio and video (no audio in project) or video only are selected, and self contained checkbox is not checked.
FCP still wants to render the whole movie of the repeated interlaced clip sequence instead of a reference movie of that sequence.SETTINGS appear to match the clip, as far as I can tell.
2d isn’t dead yet!
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sounds to me like you’re working in HDV
HDV reference movies work just like any other but your timeline really has to be rendered … not just playable in realtime. what I mean is that when you choose Render > All it still will only render those sections of the timeline that it feels it needs to render according to the settings you have specified in your Sequence > Render menu …
check your settings … for HDV you would need to force it to render any part of the timeline regardless of whether you have done anything other than trimmed and placed it in the timeline … check that all options including the “Full” option is checked. this means it will render items even if they can already be played back in realtime in full quality.
now try the render again .. see if it finds something to render this time. then export a reference movie … viola. (but be careful, it is referencing the render files. lose/delete them and your movie is unplayable)
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Yes, I realize that HDV movies need this,but thanks for clairification.
The clip I am trying to duplicate within FCP is a 1920 x 1080 x 2997 8byuv uncomressed clip of about 4 seconds. I duplicate it 10 times in the sequence timeline and then try to render the result as a reference.
2d isn’t dead yet!
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gotcha …
so how long does it take to render out this reference movie, and what is the final file size?
now do it again, but this time DO check “make self contained” … how long did it take this time, and how big is the resulting file size?i’m thinking these reference movies only reference video and that the audio is always mixed down and embeded … damned if i can find any info to back that up, so I don’t know for sure if that is or was ever true.
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knew it had to be there somewhere … from the manual (Volume IV, Chapter 17, Page 237)
All audio tracks, mixing levels, cross fades, and audio filters are rendered and the
resulting stereo or mono audio tracks are embedded in the reference movie.
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