1080 24p Advanced from Panasonic HVX200A

[Pablo Rivasplata]

Hi Phil,

Do you mean that when you select your clip in the FCPX’s Browser, the Info Inspector shows that it is a 29.97 fps clip?

Pablo.

[Phil Snyder]

Yes.

[Eric Santiago]

Oh thats odd.

Can you confirm by opening it in a diff app.

[Phil Snyder]

No, FCP X is the only editing app that I have.

[Joe Marler]

First I suggest examining the metadata in the DVCPRO media files using three different tools:

1. Use either Invisor or MediaInfo. My personal preference is Invisor since you can drag/drop multiple files on it for side-by-side spreadsheet-like comparison.

2. Use the command-line tool ExifTool: https://exiftool.org

3. Use the command-line tool FFPROBE: http://www.ffmpeg.org, pre-built Mac binaries available here: https://ffbinaries.com/downloads

To run the command-line tools, first copy to /usr/local/bin

Go to directory containing media file. Syntax for ExifTool (e.g. mediafile.mp4)

Exiftool mediafile.mp4

Syntax for FFPROBE:

ffprobe -show_format -show_streams -print_format json ~/Desktop/mediafile.mp4

The GUI tools MediaInfo and Invisor are easy to use but they don’t always reveal all necessary information. ExifTool and FFPROBE are much more thorough.

In general, cases like this are often caused by non-standard or ambiguous fields in the video file header. E.g. one field may say 29.97 and another 23.98 (within the same file), or an arithmetic rounding error might encode 23.98 as 23.99 or 23.00. The fact that other NLE software seemed to work means little and doesn’t help solve the current problem.

You can also download the free version of DaVinci Resolve and see how that IDs the clips.

Sorry about not posting links to some of the above utilities but the forum software classifies it as spam, so you’ll have to search for that yourself.

[Doug Metz]

I’d bet it’s recording 24p over 60i, resulting in 29.97 with 3:2 pulldown. A reverse telecine pass should eliminate the extra frames (and interlacing) and get you to 23.976.

[Phil Snyder]

I think you are correct. But still don’t know why this would happen in FCP X and not in FCP 7.

[Doug Metz]

How did you import the footage into FCPX? If you used the Import window (instead of drag-n-drop), you should see an option there to remove pulldown.

This gets into all kinds of media management questions, and you have options.

What I’ve done in the past is remove the pulldown prior to import. Cinema Tools was great for this, as was JES Deinterlacer. Compressor has the capability to do the job now, too.

It’s been quite a while since I’ve needed to do this, so there may be other avenues to explore.

[Phil Snyder]

Doug,

I used the Import window. The remove pulldown option was grayed out. It’s just weird that in FCP 7 I never had to do this and my footage was always ID’ed as 23.98 fps. even when I opened those already imported clips in FCP X.

[Jeremy Garchow]

I don’t think fcpx removes advanced pull down like fcp7 did. What you could try, though, is simply putting your video in a 23.98 timeline. Try this with a few clips and step through them frame by frame and see if fcpx removes the advanced pulldown frame.