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That DVCPROHD Re-Import Scurge
Has anyone new news on this problem of having to re-render “current setting” export-import clips working in DVCPROHD 1080 23.98? Last word seems to be earlier this month at the end of this thread:
https://forums.creativecow.net/thread/8/951186
My current project is a 90-min. feature; it’s split into 3 timelines of 30 min., each with countless filtered and color corrected clips that have already been rendered.
I’ve got a fine cut; I need to place three single-clip renders of each timeline onto a fresh timeline for export as a single QT movie, current settings. That full-length QT gets backed up for offsite storage and I also make an encode with it for DVD review.
But only timeline #1 will reimport without the red bar! Yes, all three timelines’ settings are indentical, all settings of the rendered QT exports from each timeline are identical, the target clean timeline is too. Everything matches but only 1 timeline re-imports.
I’m trying now choosing “recompress” upon export, a suggested fix, but won’t it degrade image quality?
And of course it takes almost 5 times longer to export– lots of fun with 90 minutes of timelines.(FCP 5.1.4, 10.4.10, QT 7.2)
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14 Replies
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[Tareco, Inc.] “But only timeline #1 will reimport without the red bar!”
I don’t get a red bar. I get the very faint RT playback bar on re-import to a DVCPro HD timeline. I just completed 4 HD masters and had to export all the speed change clips for Color before sending the timeline to that app. All the clips came back into the DVCPro HD timeline and played back with no issues.
1080i/60 timeline.
Walter Biscardi, Jr.
https://www.biscardicreative.comStop Staring Start Grading with Apple Color The new Color Training DVD now available!
https://store.creativecow.net/p/66/stop_staring_and_start_grading_with_apple_colorRead my blog! https://blogs.creativecow.net/WalterBiscardi
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If only a way to isolate a cause, and if only a known, dependable workaround.
Is a recompress upon export going to add much grit, becoming more noticeable as I make MPEG and H.264 encodes for reviews? Later today I must try it, hope it’s worth the four or five times longer it takes, if my schedule even allows.
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Just because it doesn’t happen to you Walter doesn’t mean that it doesn’t happen. This has been happening a lot lately, to a lot of us…me included. I found that when I reimported the QT movie, my dimensions were different. Instead of 960×720…it was 1280×720. And even if I made a sequence to match those settings exactly, it’d still require rendering.
I believe we here have narrowed it down to this being caused by a corrupt render, or still picture using an incorrect setting. I fixed mine by trashing all my renders (well, highlighting my sequence and hitting CNTRL-B, then CONTRL-B again to deactivate then activate all the clips, throwing the renders offline) and rendering again. Someone else looked at all the stills and noticed that one was CMYK, not RBG.
I’d try those solutions.
Shane
Littlefrog PostGETTING ORGANIZED WITH FINAL CUT PRO DVD now for sale!
http://www.lfhd.net -
[Shane Ross] “Just because it doesn’t happen to you Walter doesn’t mean that it doesn’t happen. This has been happening a lot lately, to a lot of us…me included. I found that when I reimported the QT movie, my dimensions were different. Instead of 960×720…it was 1280×720. And even if I made a sequence to match those settings exactly, it’d still require rendering.”
No, it DOES happen to me, the image gets changed to 1280×720. What I said was, I DON’T get the red render bar. I get the light “RT Playback” render bar.
Yes, export from FCP is totally screwed up right now with DVCPro HD, but it’s not causing a red bar render issue on my machine.
Walter Biscardi, Jr.
https://www.biscardicreative.comStop Staring Start Grading with Apple Color The new Color Training DVD now available!
https://store.creativecow.net/p/66/stop_staring_and_start_grading_with_apple_colorRead my blog! https://blogs.creativecow.net/WalterBiscardi
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Happened to me for the first time the other day and I was able to narrow it down to one DVPRO-HD non-multiclip clip that didn’t have any effects or anything on it in a multiclip timeline. The weird thing was, if I exported just that clip alone, it was fine. As soon as I exported one more frame on either side of it, I got the red-bar etc.
As I mentioned in an earlier post, I may have a workaround that doesn’t (I don’t think) involve recompress. I didn’t notice a quality loss, but compression experts might be able to tell further. Export the whole timeline as normal, then open the new Quicktime movie in Final Cut and export that clip to a Quicktime movie. The second Quicktime movie opened fine, fit in my timeline, and, as I said, I couldn’t see any difference between the first and second.
– David
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[walter biscardi] “No, it DOES happen to me, the image gets changed to 1280×720. What I said was, I DON’T get the red render bar. I get the light “RT Playback” render bar.”
Oh, I didn’t realize ti was happening to you too.
You might be getting the light gren bar due to your RAID and OCTO…
Shane
Littlefrog PostGETTING ORGANIZED WITH FINAL CUT PRO DVD now for sale!
http://www.lfhd.net -
[Shane Ross] “You might be getting the light gren bar due to your RAID and OCTO…”
Yes we do have a fast RAID, but we only have Mac Pro Quad. No Octo’s yet.
Walter Biscardi, Jr.
https://www.biscardicreative.comStop Staring Start Grading with Apple Color The new Color Training DVD now available!
https://store.creativecow.net/p/66/stop_staring_and_start_grading_with_apple_colorRead my blog! https://blogs.creativecow.net/WalterBiscardi
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David (dheidel) said: “Export the whole timeline as normal, then open the new Quicktime movie in Final Cut and export that clip to a Quicktime movie. The second Quicktime movie opened fine, fit in my timeline, and, as I said, I couldn’t see any difference between the first and second.
Thanks for the tip, but when you say “the second Quciktime movie” do you mean the 2nd export-import should ALSO be an FCP current settings QT?
Or a QT conversion into the same format I’m working with? -
David, I answered my own question– re-exporting the imported rendered clip from the browser is taking 5 TIMES LONGER than the first export of the same clip, so it sure seems recompression is happening. Same 5x time investment as re-rendering it in the timeline, or selecting “recompress all frames”, lots of extra time and an extra compression level for the media.
Next I try Shane’s method of trashing all renders and re-rendering all the many clips on a timeline that need renders and see if that works.
More soon…
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Well, I tried all the solutions in this thread, and no go. I trashed prefs and all that as well, etc., and the same problem exists on my other system.
I also tried bringing all 3 of the 30min. timelines together into one fresh 90min. sequence, but the many many hundreds of filtered and effected clips were too much for FCP to manage; weird missing shots ensued.
So I now wonder how I will EVER AT ALL be able to export a native, ie: current settings single FCP QT of this project without recompressing???!!!
I need to make the single clip file for back-up and for others to convert/encode, etc.
If Apple has ever mentioned this issue I can’t find it on the web.
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