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CS6, long exports even when pre-rendered

Aug 20, 2012 11:47 AM

Tags: #premiere #export #cs6 #long

Admittedly I'm a bit new to Premiere.  And I'm hoping there is some novice aspects to how the sequence is setup and what settings are chosen on export.

 

The problem I'm having is that even after I've already rendered all the effects in my edit, can watch it at full quality in real time playback, when I export it takes as long as it did to render the sequences in the first place... if not longer.  For example a 8 minute video is looking at 1.4 to 2 hours for an export with "Match Sequence Settings" checked.  And yes I did try "use previews" as well.

 

My confusion is that, doing this same task in FCP takes seconds. I've worked in ProRes422 and exported ProRes422 in maybe 10 seconds for a 5 minute edit.

 

Here... I'm assuming that my sequnce settings aren't quite right somewhere.  Any help is greatly appreciated.

 
Replies
  • Currently Being Moderated
    Aug 20, 2012 11:50 AM   in reply to Cincy Dave

    I've worked in ProRes422 and exported ProRes422

     

    That may be the issue.  PP can't "use previews" when going from a QuickTime preview to a QuickTime export, so you get the full render each time.

     
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    Aug 20, 2012 1:49 PM   in reply to Jim Simon

    Jim- "That may be the issue.  PP can't "use previews" when going from a QuickTime preview to a QuickTime export, so you get the full render each time."

     

    This statement is slightly misleading. If you change the Preview codec to match you export codec AND you have lots of effects on your clips, using Preview IS faster. If you spent the time rendering these clips that have effects, then when you export, PrP just rebuilds the frame to the final file. All your effects therefore are NOT rendered again. But this is really the only time using previews is an time saving process.

     
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    Aug 20, 2012 2:47 PM   in reply to lasvideo

    So you're saying that using ProRes previews and exporting to ProRes will now use the preview files for export?  Aren't you the one who previously had an issue doing that?

     
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    Aug 20, 2012 2:54 PM   in reply to Jim Simon

    The issue was...

     

    I expected the preview files to be used in the same kind of Smart Rendering manner like FCP, where all the preview files are taken as chunks and "stitched" together. I was told by Adobe thats not how PrP work. Each frame is recomputed for output.

     

    But..

     

    If you have Colorista on a clip and you render it. That time is well spent. Since when PrP exports it, it does recomputer the IMAGE of  frame, but the effect has already been kind of "baked in" to that clip. So that process is done once uring rendering but NOT when exporting.

     
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    Aug 20, 2012 3:35 PM   in reply to lasvideo

    I expected the preview files to be used in the same kind of Smart Rendering manner like FCP, where all the preview files are taken as chunks and "stitched" together.

     

    That's pretty much what happens when the preview format and the export format are the same, such as DV to DV.

     

    I was told by Adobe thats not how PrP work.

     

    I believe that comment only referred to using QuickTime formats, because like I said, when going form DV to DV, the export is nothing more than a file copy process.  No rendering or transcoding is performed.

     
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    Aug 20, 2012 3:49 PM   in reply to Jim Simon

    Its being employed on a limited bases at this point and ONLY with clips that have no effects on them..

     

     

    Adobe - Premiere CS 6 - Enabled “smart rendering” and added Enable Smart Rendering Codec setting to the Video tab of the MXF OP1a exporters for XDCAM HD and XDCAM EX to enable or disable smart rendering for these formats. This option defaults to the off/disabled state. We’ll have more information about this feature in a post on this blog soon.

     
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    Aug 20, 2012 4:19 PM   in reply to lasvideo

    Its being employed on a limited bases at this point and ONLY with clips that have no effects on them..

     

    No, it works perfectly fine for clips with effects on them as well, at least so long as you don't use QuickTime.  I don't use QuickTime at all, so I can't test that option.

     

    Smart Rendering is a whole different animal related to Long GOP media, and really has nothing to do with using preview files.

     
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    Aug 20, 2012 6:31 PM   in reply to Jim Simon

    This is Wils response to my questions regarding Smart Rendering.


    Wil (from Adobe) - " smart rendering is something that we've been asked a lot about, esp. lately by all the broadcasting partners we've been working with. Specifically, their interest lies in smart rendering from XDCAM HD sources, as they're all working with XDCAM 420 / 422 material (either camera captured OP1a MXF sources, or else material captured/ingested via Harmonic MediaDecks, Telestream, etc).  Let's just say that we're very actively looking into what we can do here.


    Keep in mind though that this isn't magic - the minute you apply any kind of effect (realtime or not) on an MPEG source, you nullify the ability to copy/paste/splice GOPs. Notwithstanding, smart rendering  has a broad appeal to people in for instance news workflows, where the bulk of effects involve at best transitions between clips, so most of the edited material is 'naked'.

     
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    Aug 21, 2012 11:27 AM   in reply to lasvideo

    This is Wils response to my questions regarding Smart Rendering.

     

     

    I've no quarrel with Wil's comments there, but again, Smart Rendering has to do with using Long GOP media, and is a separate issue to the one in this thread, about using preview files.  If you create a preview file and wish to use that for export, then you are no longer accessing the original media and Smart Rendering becomes moot.

     
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  • Currently Being Moderated
    Aug 21, 2012 11:26 AM   in reply to Cincy Dave

    what format are you using?

     

    For previews I generally use AVI with the UT codec.

     

    If you're using MPEG previews, then you're better off not using those previews for export anyway, as doing so adds an unnecessary layer of compression to the chain.

     
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    Aug 21, 2012 5:41 PM   in reply to Cincy Dave

    When you create a new sequnce...

     

    Preview Files.png

     

    The UT codec was added separately by me.  It's a free, lossless codec that won't add any degradation to the image, making it safe to use for previews.

     

    http://umezawa.dyndns.info/archive/utvideo/

     
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    Aug 22, 2012 2:09 PM   in reply to Cincy Dave

    I think is this case the slow down your are experienceing is with Colorista. I have had the same problem with that plug in. Just for grins. use the Premiere Pro 3 Way Color corrector and perform the same tests.

     
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    Aug 22, 2012 7:57 PM   in reply to Cincy Dave

    What do I need to do so that the export uses the already rendered previews and takes seconds.

     

    Well, for me all I have to do is check the box marked Use Previews.

     

    Don't ever check Match Sequence Settings in the export dialog.  It's just looking for trouble.  Set them up manually, and when you do, report back what you set them to.

     
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    Sep 6, 2012 3:46 PM   in reply to Cincy Dave

    Well on my PC when I export the 30min programs I edit. It generally takes about 30-35 mins to export to 1920x1080i 29.97fps using VBR 2-Pass mpeg-2. My timelines have promos, bumps, voiceovers, Music, Lower-Thirds, Light CC and obviously shot footage. I never use the "use previews option either. My source footage is sometimes AVCHD if we do shoots in the field and but most of the time our footage from the studio is ProRes or BMD's MJPEG using the .avi container. So I'm wondering what specs your system has.

    Here is my work edit stations specs. (Which aren't anything amazing at all)

     

    Intel Core i7 2600k

    Nvidia GTX 570

    OS Drive (SSD Intel 510 elmcrest 120Gb)

    RAID array 4x1TB 7200RPM (raid-5)

     

    My source footage is sometimes AVCHD if we do shoots in the field and but most of the time our footage from the studio is ProRes or BMD's MJPEG using the .avi container.

     

    Then I obviously have a export drive as well. But those are the specs from my system that matter. So I'm wondering also why it seems your perfomance is so slow. Although if you're timelines are using Colorista then it's not suprising that plug-in is well known to slow down exports to a crawl. So it does seem strange that even when using use previews your exports are so slow.

     
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    Sep 7, 2012 8:33 AM   in reply to Cincy Dave

    My source footage is usually 1920x1080i ProRes HQ. Then I usually export to 1920x1080i mpeg-2. My sequence settings are generally always 1920x1080i I always leave my preview codec set to the default since I never use the "use previews" option. Generally I always just use the standard mpeg-2 i-frame only preview option since I don't mind if my preview is lossless or not since I don't ever use the "use preview" option.

     

    Basically what I was trying to point out was that you where saying here that it would take hours to export a 30min program.

    As an example if you have a 30 minute edit, and need to change a lower 3rd, and export out the change, it would take hours because the export would be re-rendering every graphic and effect for the entire show.... ever, single time.


    So I was wondering what type of specs your system had if it takes it hours to export a 30 minute program. Generally speaking I almost always export to mpeg-2 because that's what our play-server in at our station supports. Unless it's a promo or HQ master copy of something that needs to be archived.

     

    Also to answer your last question I never check the sequence settings option since I prefer to select all my options on my own because I have customized presets anyways.

     

    If you'd like I will test the "use previews option" but quite honestly I don't usually ever need to render my timeline to preview stuff unless I try to do animations inside Premiere. My stuff always just plays in real-time. I do however agree that if you take the time to render your stuff in the timeline it SHOULD export faster so I'm not really sure why you're experincing such long wait times, but I did just want to point out that for me my timelines always export much faster than a few hours.

     

    Also are you talking about using FCP7 or FCP X? Because the few times I used FCP7 on my friends Macbook pro it was terrible I had to render everytime I changed a single key-frame. It kept saying "warning dropped frames" It was a terrible experince. So basically I was stuck having to render something over and over and over. But when using Premiere I don't have to render very often unless I'm trying to animate something or work on something with really heavy CC, scaling, effects etc. 

     
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    Sep 19, 2012 5:09 AM   in reply to Cincy Dave

    I'm with you on this Cincy Dave, these long exports are just crazy.  Don't get me wrong I really love Premiere and like all of the extra stuff it gives me over FCP7, but having to render every export is insanely slow.

     

    Someone from Adobe stated on another thread somewhere that the realtime benefits you get in the timeline from hardly any rendering, save so much time in the edit process that the time gained negates the lost time at export.  However when you export over and over again for client review, rendering every little thing time and time again is just a waste.  More to the point if I can't roughly predict how long an export will take I'm reluctant to even begin the edit in Premiere in the first place, particularly if I have a client sat in the room with me.

     

    I've also learnt to my cost that dynamic linking between Premiere and After Effects is not necessarily a good thing as for the same reason as above when you export it just adds that much more time.  Plus I discovered it is far faster to render that clip in After Effects and then bring it in to Premiere.

     

    My last edit was done in FCPX, something I never thought I would have done but a year on from the launch and it is finally doing the things it should have at the start.  It still has its problems but rendering and export is not one of them.

     

    Please get this sorted Adobe as I really want to confidently use your software.

     
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  • Currently Being Moderated
    Sep 28, 2012 7:25 PM   in reply to Cincy Dave

    RE: Longer render times -

     

    About the time of the recent Adobe updates I upgraded to RAID 0 and some things are faster...  I just completed editing a 3 minute video with very limited titles and effects. Normally a render would take an hour or two for my usual jobs. But today Media Encoder has been at it for 4 hours and says it will take another 16 hours to complete... for a 3 minute video????

     

    Premiere now likes to crash during simple renders and the "updated" Encore has a new problem where it can't record to DVD without ending a "hardware" error so I have to go to ISO first and the DVDs are fine. I found THAT out after wasting more than a day chasing down hardware bios updates and trying in vain to complete the DVD in Encore.

     

    After the month long fiasco during which Adobe "support" accomplished absoutely nothing (I finally found the answer in this forum) I'm not in any mood  to subject myself to Adobe's Malaysian Torture experience.

     

    What the $&*@# is going on?

     

    (Win 7/64, Phenom II, rendering to H.264/MP4, YouTube 29.97, 1080)

     
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    Sep 28, 2012 8:37 PM   in reply to timtro

    Very wierd for a 3 minute video, something is obviously up. I export 30 minute timelines in 20-35 minutes (depending on whats inside the timeline). Even though AMD CPU's don't really hold up to well vs Intel CPU's it still shouldn't be taking that long. Clearly something strange is occuring.

     
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    Sep 30, 2012 10:36 AM   in reply to ComputerNovice25

    It will handle anything x 720 but nothing 1440 x 1080 or 1920 x 1080. Anything above that and about 40 seconds into the render there is some kind fo blip screen flash and it freezes. The roblem does not appear in CS5.5 or CS5.

     

    UPDATE: Searched for updates and found a new update that appears to have solved this particular problem.

     
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  • Currently Being Moderated
    Apr 7, 2013 4:00 PM   in reply to Cincy Dave

    They did. (Fixed in Premiere Pro "Next")

     

    http://vimeo.com/62438789

     
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    Apr 7, 2013 2:57 PM   in reply to Cincy Dave

    Yup.

     
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    Apr 7, 2013 3:59 PM   in reply to Jim Simon

    I think this feature enhancement will make a lot of people happy.

     
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    Apr 7, 2013 4:03 PM   in reply to Kevin Monahan

    I think it will make a lot of QT users happy.  We've had this functionality with AVI files since forever.

     
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