Timeline rendering at DVinfo.net

Brian David Melnyk · September 23rd, 2014, 05:51 AM

If I have a clip on the timeline with fx and subtitles rendered, and then I say extend the clip by 1 frame, the whole clip needs to be rerendered. Why? If I blade off a piece at the end, same thing. In FCP 6, only that frame or piece would need re rendering...
Any solutions?

Brian David Melnyk · September 24th, 2014, 01:36 AM

Anyone?
Even if I extend or shorten a gap clip in the timeline, with no other clips attached above, suddenly many other clips need to be rendered. Work is slowing to a crawl....

Shaun Roemich · September 24th, 2014, 12:34 PM

I know NOTHING about FCPX but this reminds me of the bad old days of editing long GOP codecs.

Are you editing with AVCHD or some other long GOP codec? If you transcode to an intraframe codec like ProRes, does the problem go away?

William Hohauser · September 24th, 2014, 03:52 PM

This sounds wrong. Changing a gap never unrenders anything unless you are building over that gap with connected clips. A couple of questions:

Are you editing in the same format as your clips?
And as Shaun asked, are working with AVCHD or MPEG2HD files?

Brian David Melnyk · September 25th, 2014, 05:08 AM

All footage transcoded to pro res for editing, and the sequence matches the clips.
The sequence is pretty complex with lots of layers of clips, color corrections, MB looks and neat video noise reduction, but clips should stay rendered. When re-opening fcpx, it also sometimes loses random renders....
Early on I made part of the sequence a compound clip, but I never collapse it...
I made a new sequence (with the appropriate settings) and pasted the whole timeline into it. Same problem.
I wonder if the compound clip is making things funky?

William Hohauser · September 25th, 2014, 03:42 PM

Neat has you beat here. It's a particularly complex correction filter, I use it rarely and always turn it off until the final render. The same with the "makeup" filters. You should find that some filters will cause this problem and others don't. Also if you key frame the parameters in a filter it will un-render the whole clip with any change in the clip or over the clip. I sometimes split the clips so that the keyframes are outside the area I am changing.

Brian David Melnyk · September 26th, 2014, 02:54 AM

I will look into the neat beating I am apparently taking...
Thanks for the input!

September 23rd, 2014, 05:51 AM	#1
Brian David Melnyk Major Player Join Date: Mar 2007 Location: Winnipeg Canada Posts: 532	Timeline rendering If I have a clip on the timeline with fx and subtitles rendered, and then I say extend the clip by 1 frame, the whole clip needs to be rerendered. Why? If I blade off a piece at the end, same thing. In FCP 6, only that frame or piece would need re rendering... Any solutions?

September 24th, 2014, 01:36 AM	#2
Brian David Melnyk Major Player Join Date: Mar 2007 Location: Winnipeg Canada Posts: 532	Re: Timeline rendering Anyone? Even if I extend or shorten a gap clip in the timeline, with no other clips attached above, suddenly many other clips need to be rendered. Work is slowing to a crawl....

September 24th, 2014, 12:34 PM	#3
Shaun Roemich Inner Circle Join Date: Sep 2002 Location: Vancouver, British Columbia (formerly Winnipeg, Manitoba) Canada Posts: 4,088	Re: Timeline rendering I know NOTHING about FCPX but this reminds me of the bad old days of editing long GOP codecs. Are you editing with AVCHD or some other long GOP codec? If you transcode to an intraframe codec like ProRes, does the problem go away? __________________ Shaun C. Roemich Road Dog Media - Vancouver, BC - Videographer - Webcaster www.roaddogmedia.ca Blog: http://roaddogmedia.wordpress.com/

September 24th, 2014, 03:52 PM	#4
William Hohauser Inner Circle Join Date: Dec 2005 Location: New York City Posts: 2,650	Re: Timeline rendering This sounds wrong. Changing a gap never unrenders anything unless you are building over that gap with connected clips. A couple of questions: Are you editing in the same format as your clips? And as Shaun asked, are working with AVCHD or MPEG2HD files? __________________ William Hohauser - New York City Producer/Edit/Camera/Animation

September 25th, 2014, 05:08 AM	#5
Brian David Melnyk Major Player Join Date: Mar 2007 Location: Winnipeg Canada Posts: 532	Re: Timeline rendering All footage transcoded to pro res for editing, and the sequence matches the clips. The sequence is pretty complex with lots of layers of clips, color corrections, MB looks and neat video noise reduction, but clips should stay rendered. When re-opening fcpx, it also sometimes loses random renders.... Early on I made part of the sequence a compound clip, but I never collapse it... I made a new sequence (with the appropriate settings) and pasted the whole timeline into it. Same problem. I wonder if the compound clip is making things funky?

September 25th, 2014, 03:42 PM	#6
William Hohauser Inner Circle Join Date: Dec 2005 Location: New York City Posts: 2,650	Re: Timeline rendering Neat has you beat here. It's a particularly complex correction filter, I use it rarely and always turn it off until the final render. The same with the "makeup" filters. You should find that some filters will cause this problem and others don't. Also if you key frame the parameters in a filter it will un-render the whole clip with any change in the clip or over the clip. I sometimes split the clips so that the keyframes are outside the area I am changing. __________________ William Hohauser - New York City Producer/Edit/Camera/Animation

September 26th, 2014, 02:54 AM	#7
Brian David Melnyk Major Player Join Date: Mar 2007 Location: Winnipeg Canada Posts: 532	Re: Timeline rendering I will look into the neat beating I am apparently taking... Thanks for the input!