H.264 MP4 playback problems in resolve 15Beta and 14

I've been using resolve for sometime now, Love it. Recently, While I was editing a video from a movie clip, I noticed some problems during playback in Resolve. (before import into the timeline or after)
The frame rate of whole video is 23.976

but after imported to resolve, it just has some playback problems (choppy, missing frames and duplicated frames). I did not just let it play but also use the left and right key to navigate frame by frame. Its very noticeable among these flying vehicle scene:



I tested in Resolve 14, 15 B2 and 15 B3 same problems.

I also imported the same clip to Adobe Premiere, it reads the clip correctly and no missing frames

Sample footage:
dropbox.com/s/nc138m0w2zrybxn/Sample_23.976.mp4?dl=1

I've been using resolve for sometime now, Love it. Recently, While I was editing a video from a movie clip, I noticed some problems during playback in Resolve. (before import into the timeline or after)
The frame rate of whole video is 23.976

but after imported to resolve, it just has some playback problems (choppy, missing frames and duplicated frames). I did not just let it play but also use the left and right key to navigate frame by frame. Its very noticeable among these flying vehicle scene:



I tested in Resolve 14, 15 B2 and 15 B3 same problems.

I also imported the same clip to Adobe Premiere, it reads the clip correctly and no missing frames

Sample footage:
dropbox.com/s/nc138m0w2zrybxn/Sample_23.976.mp4?dl=1

Sorry,

Same answer as previous times:
- variable rate video

Code: Select all

Frame rate mode: Variable
Frame rate: 23,976 (24000/1001) Im / s
Minimum frame rate: 23,579 Im / s
Maximum frame rate: 24,390 Im / s


Probably FREE version.

A tip: Transcode in Frame Rate mode: Constant before import into Davinci Resolve or more simply: the Studio version can handle these videos with a powerful machine but, but:
As the format is compressed: the best is to transcode in lossless format. So much easier to work

Looks like a bad low quality rip but interesting that Resolve shows lots of duplicate frames that do not exist in the source.

To get it to work in Resolve you could transcode the file, for instance with:

ffmpeg -i Sample_23.976.mp4 -c:v libx264 -crf 12 sample_fixed.mp4

Or if you want all-intra:

ffmpeg -i Sample_23.976.mp4 -c:v libx264 -intra -crf 12 sample_fixed_intra.mp4

Or if you want to transcode lossless (I don't see much of a point) you could use this:

ffmpeg -i Sample_23.976.mp4 -c:v libx264 -intra -crf 0 sample_fixed_intra_lossless.mp4