Skip navigation
Matthew_004
Matthew_004 Calculating status...
Currently Being Moderated

Blu-Ray playback looks 30fps not 24fps

Aug 19, 2012 5:40 AM

Hi Folks,

 

 

I've built a DVD ISO in En and am using disc-utility to burn my ISO with an external BR burner.

I filmed in 23.976. Edited in 23.976. Transcoded out of after Effecst in 23.976 and all my Encore setting say 23.976.

 

 

My issue is that when there is a scene with a pan or tilt, the motion looks like its playing back at 29.976, essentially it looks sped up.

 

I double checked my TV settings, I do not have any motion-enhanced functions turned on. Double checked it on another player, same issue.

 

 

Is this a data rate issue?

 

I encoded an H264 at out of After efefcts using, 23.976, CBR, at 30MBS.

 

 

 

Any guesses what this may be?

 

 

Thanks

908 Views   9 Replies   Latest reply: digabyte, Oct 6, 2012 4:42 PM
 
Replies
  • John T Smith
    Currently Being Moderated
    1. John T Smith,
    Aug 19, 2012 8:07 AM   in reply to Matthew_004
    Report

    Your title says "Blu-Ray playback" but your message says "I've built a DVD ISO"

     

    So... which is it... DVD or BluRay?

     

    Showing people your settings screens may help... a screen shot works well to SHOW people what you are doing

    http://forums.adobe.com/thread/592070?tstart=30

     
    |
    Mark as:
  • Jim Simon
    Currently Being Moderated
    2. Jim Simon,
    Aug 19, 2012 8:59 AM   in reply to Matthew_004
    Report
    Any guesses what this may be?

     

    Observer error, most likely.

     
    |
    Mark as:
  • Matthew_004
    Currently Being Moderated
    3. Matthew_004,
    Aug 19, 2012 5:19 PM   in reply to John T Smith
    Report

    Its a Blu-ray ISO. Instead of buring a disc we build an ISO in case set needs more copies down the road, easy to burn more withou having to go back into En.

     

    Will post screen grab when get into the office.

     
    |
    Mark as:
  • Matthew_004
    Currently Being Moderated
    4. Matthew_004,
    Aug 19, 2012 5:22 PM   in reply to Jim Simon
    Report

    Unlikley to be an observer error. It was flagged by the DP and director when the dailies got back to set. We confirmed the issue. MXF's and QT proxies are fine.

     
    |
    Mark as:
  • Stan Jones
    Currently Being Moderated
    5. Stan Jones,
    Aug 19, 2012 5:42 PM   in reply to Matthew_004
    Report

    I can't imagine what might cause this in Encore. Encore imports as do not transcode?

     
    |
    Mark as:
  • Jeff Bellune
    Currently Being Moderated
    6. Jeff Bellune,
    Aug 20, 2012 4:06 AM   in reply to Matthew_004
    Report

    You say it looks "sped up".  Are you describing a speed increase like the footage was time-remapped?  Or are you trying to describe some kind of frame blending effect?

     

    Jeff

     
    |
    Mark as:
  • Matthew_004
    Currently Being Moderated
    7. Matthew_004,
    Aug 21, 2012 4:02 AM   in reply to Jeff Bellune
    Report

    Perhaps sped-up is not the most detailed explanation.

     

    Essentially all the footage looks as expected, cinematic with 24p's inherent motion blur.

     

    However, as soon as the camera pans or tilts, both the move itself and the action in the frame looks like broadcast 30fps. The image looks the way broadcast cameras look, without motion blur. Its as if the motion, in only pan/tilt instances, is somehow being interpreted incorrectly.

     

    As I said, the quicktime's are fine, MXF's are fine. iPad file is fine. SD DVD is fine. Just the Blu-ray.

     

    Wokflow is: Alexa - Davinci to transcode - Avid to sync - AE to Compress for Blur-ray - Encore to build - Disk utility to burn.

     

     

    We tried other scenes today. Same result.

     

     

    Perhaps not the best forum to ask but any other Blu-ray burning software to recommend?

     
    |
    Mark as:
  • Jeff Bellune
    Currently Being Moderated
    8. Jeff Bellune,
    Aug 21, 2012 4:29 AM   in reply to Matthew_004
    Report

    Perhaps not the best forum to ask but any other Blu-ray burning software to recommend?

    Scenarist, DoStudio (now owned by Sony) and BluPrint.  But I would focus on the H.264 (or MPEG2) encoding.  It is the encoding that is most likely to introduce a problem.

     

    That said, when you import your AE-compressed file into En for authoring to Blu-ray, does the Blu-ray Transcoding Status column show "Do Not Transcode"?  If not, that's where the problem is being introduced because En will re-transcode the asset.

     

    Jeff

     
    |
    Mark as:
  • digabyte
    Currently Being Moderated
    9. digabyte,
    Oct 6, 2012 4:42 PM   in reply to Matthew_004
    Report

    I came across this thread with a sort of similar problem (my files are 23.976 but appear 29.97 on the project timeline).  I haven't viewed my footage on BluRay yet (haven't built the disc), but the timeline shows that the footage has 30 frames per second.  In other words, when I move the bar on the timeline and scrub over the video, where the time code reads minute:second:frames the "frames" number goes all the way to 29 before going back to 0.

     

    The rendered h.264BluRay .m4v file is absolutely 23.976fps (rendered with Adobe Media Encoder out of Premiere) and the project is absolutely set up as a BluRay project in Adobe Encore.

     

    What gives?

     
    |
    Mark as:
Actions

More Like This

  • Retrieving data ...

Bookmarked By (0)

Answers + Points = Status

  • 10 points awarded for Correct Answers
  • 5 points awarded for Helpful Answers
  • 10,000+ points
  • 1,001-10,000 points
  • 501-1,000 points
  • 5-500 points