8 Replies Latest reply: May 14, 2013 12:36 PM by dvdflashbacks
dvdflashbacks Level 1 Level 1 (40 points)

So I am working on a client project and it appears that one of the cameras was set to 1080p at 29.97 fps instead of 24 fps.  So half of the footage is not in the right frame rate.  Won't doing a conform result in unintentional slow motion?

 

Can anyone tell me what the best solution might be for this?  And what are the side effects?

 

Thanks.

  • 1. Re: Wrong frame rate used in project...any fix?
    Michael Grenadier Level 7 Level 7 (20,115 points)

    First, when you say 24 fps, do you actually mean 24p (23.976 fps)? 

     

    Is all the 24p material progressive?

     

    If so, I'd take the 29.97 fps material into compressor and in the encoder panel:  video:  change the frame rate to 23.976 and in the frame controls panel,  turn frame controls on, make output files progressive, deinterlace:  best,

    rate conversion:  best  and set duration to 100% of source.

     

    Do a short test by setting ins and outs in the preview window to make sure everything's working properly.

  • 2. Re: Wrong frame rate used in project...any fix?
    dvdflashbacks Level 1 Level 1 (40 points)

    Michael Grenadier wrote:

     

    First, when you say 24 fps, do you actually mean 24p (23.976 fps)? 

     

    Is all the 24p material progressive?

     

    If so, I'd take the 29.97 fps material into compressor and in the encoder panel:  video:  change the frame rate to 23.976 and in the frame controls panel,  turn frame controls on, make output files progressive, deinterlace:  best,

    rate conversion:  best  and set duration to 100% of source.

     

    Do a short test by setting ins and outs in the preview window to make sure everything's working properly.

    Hi Michael,

     

    Sorry for my mistype.  Half of the footage is 23.976 fps and half is 29.97 fps.  All shot in 1080p.

     

    To my understanding, dong a conversion in compressor on the 29.97 will result in a slower frame rate which will be horrible for all the dialogue and audio.  Wouldn't it be better to go the other way and convert all 24fps to 29.97?

     

    Thanks.

  • 3. Re: Wrong frame rate used in project...any fix?
    Shane Ross Level 8 Level 8 (41,895 points)

    A CONFORM will slow the footage down.  Using Compressor to convert will not. 

     

    What is your target output?  23.98 converts to interlaced 29.97 far better than 29.97 converts to 23.98...

  • 4. Re: Wrong frame rate used in project...any fix?
    Michael Grenadier Level 7 Level 7 (20,115 points)

    do a test.  I recently converted a documentary shot at 29.97 fps to a digital cinema package that required 24 fps.  The conversion I suggested looked pretty good.  The audio was not a problem.

     

    You can convert 24p footage to 29.97 by adding pulldown.  Not sure how good compressor does this.  I've always heard the After Effects does the best job of adding pulldown.

  • 5. Re: Wrong frame rate used in project...any fix?
    Michael Grenadier Level 7 Level 7 (20,115 points)

    All depends on what the foootage is.  Interviews, the conversion to 23.986 will probably be undetectable.  Sports footage, fast movement, might be a problem.

  • 6. Re: Wrong frame rate used in project...any fix?
    dvdflashbacks Level 1 Level 1 (40 points)

    Shane Ross wrote:

     

    A CONFORM will slow the footage down.  Using Compressor to convert will not. 

     

    What is your target output?  23.98 converts to interlaced 29.97 far better than 29.97 converts to 23.98...

     

    Hi Shane,

     

    The target output, due to other factors, will be DVD.

     

    @Michael - This is an indie film project, so it covers a big spectrum of filming styles.

     

    Thanks.

  • 7. Re: Wrong frame rate used in project...any fix?
    Michael Grenadier Level 7 Level 7 (20,115 points)

    dvd's can be either 23.986 or 29.97 fps.  There's a slight advantage with 23.986 as you can get slightly better quality with the same bit rate (or fit slightly more material onto a dvd).  Whether you'd be able to see the difference...

  • 8. Re: Wrong frame rate used in project...any fix?
    dvdflashbacks Level 1 Level 1 (40 points)

    Thanks guys!  Converting some test footage now and see what happens.