Downloaded Preview videos flashing/stuttering in Final Cut X

bmowell 16 Mar 2013 06:17
I didn't see this addressed in the FAQ:

I'm trying to decide whether to purchase and incorporate a couple POND5 videos segments into a short film. When I download the preview to my mac they look fine. When I import them into Final Cut X and watch them from the media bin they look fine. But when I put them into the timeline (with the rest of my movie) they stutter and flash! Quite distracting when trying to make a decision.

What's up with that?

Thanks!
bmowell 17 Mar 2013 02:19
Found an answer for those who may have the same issue.

My other clips on my timeline were 25 FPS. My pond5 clip was 24 FPS. The solution:

The 5D footage was 25fps but I had to insert some 24fps promo footage, which FCP conformed to 25FPS but without retiming the footage so the footage played faster. I didn't find a solution within FCPX and had to sort it with compressor."

From the almost Help guide

Choose a method of conforming frame rate

When a clip’s frame rate differs from the project’s frame rate, Final Cut Pro employs a frame-sampling method to change the clip’s frame rate to match that of the project. You can choose which frame-sampling method Final Cut Pro uses to modify the clip’s frame rate. The method you choose depends on how important it is to you to eliminate visual stuttering and visual artifacts.

Add a clip to the Timeline with a frame rate that doesn’t match the current project’s frame rate settings.

Select the clip in the Timeline.

To open the Video inspector, click the Inspector button in the toolbar (shown below), and click the Video button at the top of the pane that appears.

Choose a method of conforming frame rate from the Frame Sampling pop-up menu in the Rate Conform section of the Video inspector.

Floor: The default setting. Final Cut Pro truncates down to the nearest integer during its calculation to match the clip’s frame rate to the project’s frame rate.

Nearest Neighbor: Final Cut Pro rounds to the nearest integer during its calculation to match the clip’s frame rate to the project’s frame rate. The Nearest Neighbor option reduces artifacts at the expense of visual stuttering. Rendering is required.

Frame Blending: Creates in-between frames by blending individual pixels of neighboring frames. Slow-motion clips created with Frame Blending appear to play back more smoothly than those created with the Floor or Nearest Neighbor setting. This setting provides better reduction of visual stuttering, but you may see some visual artifacts. Rendering is required.

Optical Flow: A type of frame blending that uses an optical flow algorithm to create new in-between frames. Final Cut Pro analyzes the clip to determine the directional movement of pixels, and then draws portions of the new frames based on the optical flow analysis. Choosing the Optical Flow option results in better reduction of visual stuttering, and Final Cut Pro spends a significant amount of time to fix visual artifacts.