Converting Frame Rates In Compressor

Final Cut Studio’s Compressor allows users to add clips with different frame rates to the timelines, but these clips will have to be rendered before they can be outputted. While this task can be done in the standard version of Final Cut Pro, Compressor does the job better even though it will take some extra steps.

Step 1: Using Frame Rates

When trying to covert frame rates, it can lead to some sloppy footage if not done correctly. The correct way to convert frame rates is by matching the footage with the highest frames per second. For example, if using one frame with 24 fps (frames per second) and one with 27 fps, it is best to convert the 24 fps footage to the 27 fps. This will just use the original number of frames and add three additional frames. These additional frames will be duplicates of frames of the source footage.

If a person tries to do it the other way, the program will delete three frames and these deleted frames may make the footage look choppy. And, the missing frames could be something important. This is why frames should be converted upwards, not downwards.

Step 2: Using Compressor’s Optical Flow Technology

What makes Compressor better than Final Cut Pro is that it uses optical flow technology. This technology has the ability to analyze pixel by pixel motion to add the additional frames to meet the new frame rate for the output.

Further, the optical flow technology can then use this information to interlace videos, deinterlace them, adjust the timing of effects, manipulate frame rates or even scale videos so that the final product just looks better.

Step 3: Converting Frame Rates

Next, it is time to use the optical flow technology to convert that 24 fps clip into a 27 fps clip.

To convert the frame rates for clips, first open up the Batch window and drag either a single clip or multiple clips to this window. Click on the Settings window and go into the Settings tab. Go into the Advanced Format Conversion folder. This will have some of the presets for frame rate conversion.

Next, open up the High Definition folder and find the DVCPRO preset. Pick the DVCPRO preset that best fits the video sequence and then select and drag it to the Batch window. To ensure that the audio remains the same, pick one that has “with audio pass-through." This means that the source clip’s audio will not be changed when the frame rate is converted.

Now, go into the Inspector tab and select the Encoder tab. Now, in this tab, ensure that the Audio settings are on Pass-through. If they are, leave this section along and go into the Video settings. The Standard Video Compression Settings window will appear. Select the frame rate that is closest to the desired frame rate from the Frame Rate drop-down menu. Hit OK.

Go into the Frame Controls tab and select the gear box to turn on the Frame Controls. From the Frame Controls tab, click on. In the Retiming Control section of the Inspector, select either Best Motion compensated or Best High quality motion compensated. Now, set the frame rate and the Rate Conversion method in the Frame Control tab and then Submit.