6 Replies Latest reply on Dec 26, 2012 3:00 AM by idar lettrem

    Four corrupted frame in video


      I'm trying to create a time lapse of 1170 images I took during the Geminid meteor shower.  I edited all the files in Lightroom v4.3 with the Catalog Settings set to "Automatically write changes into XMP" selected.  Lightroom created all the necessary XMP files for each CR2 file.  All the files look great in Lightroom.  After importing them into After Effects v11.0.2.12, there are four frames that are corrupt, although this varies.  Two of the frames appear really dark.  It's as though the Blacks got set extremely negative (e.g. -100).  The other two frames look like color calibration charts.  Here are the changes I made in Lightroom:


      White Balance:

           Temp    3600

           Tint     -18



           Highlights     -74

           Whites          +21

           Blacks           -10



           Clarity          +10

           Vibrance       +20


      Tone Curve:

           Medium Contrast



           Amount     30

           Radius       1.2

           Detail        35

           Masking    10


      Noise Reduction:

           Luminance     15

           Detail             65

           Contrast         30


      Lens Correction

           Enabled with Default settings


      First, is there a way to find out which filename (e.g. _S1P8449.CR2) is associated with a particular frame?  When importing into AE, I selected all necessary files at once ensuring the Camera RAW Sequence was checked.  There were two frames missing but it indicated a range from 8282-9453. When I render or do a memory preview, I seem to always get bad frames.  In addition, they seem to be random.  One time through, it was frames 356, 398, 816, and 921.  The next time through, after purging the cache and memory, it was 460, 496, 727, and 1017.  It's been very frustrating trying to figure out what's going on.  I've tried rendering as Quicktime, FLV and AVI just to name a few.  They all show these corrupted files.  I even tried using the standalone Adobe Media Encoder for rendering.  It too had the bad frames.  Any help would be greatly appreciated.


      I'm using Windows 7 with the latest service pack and all updates.  I have 24 GB of memory.  I have Adobe Master Collection CS6 with all the latest updates. 





        • 1. Re: Four corrupted frame in video
          Mylenium Most Valuable Participant

          You're probably trying to solve the problem on the wrong end. Why not simply export 16bit TIFFs from LR? Sure, it's some resource/ hardware acceleration conflict with AE vs. ACR, but long before you get to the bottom of it, you'll have finished your work by changing your approach. Or at least try to render shorter segments and then assemble them in a second pass...



          • 2. Re: Four corrupted frame in video
            astro46 Level 1



            Thanks for the excellent suggestion.  It solved the darker frames, but now I have four frames that appear to be color charts.  It's probably not coincidence that I have four missing frames from my time lapse.  Perhaps, AE is substituting the color charts as placeholders for the missing frames.  What's the easiest way to delete these bad frames in the timeline?  I don't mind the four missing frames.  I just want the color charts gone.



            • 3. Re: Four corrupted frame in video
              astro46 Level 1

              To all,


              I figured it out.  AE was adding placeholders for the missing frames.  Since I have four missing frames, I created five layers that encompassed the entire range. 


              Now, I just have to get Quicktime to render in H.264.  It keeps failing with a module problem.  I'm sure there's a bug in the latest version of Quicktime.  Is Quicktime Pro required for rendering?  All I have is the free version.



              • 4. Re: Four corrupted frame in video
                Mylenium Most Valuable Participant

                QT should have no problem when controlled from a host app. No need for QT Pro. Anyway, you may have much better luck by using AE's native H.264 encoder, if all you need is a file for YouTube or other such sites as well as BluRay authoring or playback on your computer or TV...



                • 5. Re: Four corrupted frame in video
                  Todd_Kopriva Level 8

                  Both the QuickTime H.264 exporter and the one built into After Effects are of poor quality. The only one H.264 exporter that I recommend is the one built into Adobe Media Encoder. I recommend using Adobe Media Encoder to create your final output movie if you need H.264.

                  • 6. Re: Four corrupted frame in video
                    idar lettrem Level 1

                    Why not simply "preprocess/ batch" your pictures in LR , adjust them to comp size (maybe slightly larger), ++ ... and export them as jpegs to AE? Although RAW - or 16 bit TIFF's , as Mylennium suggestes,  retain the full quality of the image, these files are big, slow and in most instances an overkill IMHO . Lightly compressed JPEG files  lose very little quality and should be more than sufficient.. Post-adjustments on these files in AE is much better invested time and effort - at least for me  

                    http://progresit.com/nordlys8.html --  timelapse example here