How to batch export TIIF images from BRaw files

Hi, I filmed a scientific experiment for 3 hours. My client wants a TIIFF image every minute. I don't know how to do this. By automating the work.

The simplest way I can think of is to create a timeline, set retime process to Nearest neighbor, add the files, speed up footage 3000%, make Compound Clip, speed that up 200% (for a combined 30x2=60x speedup), export as TIFF files.
Do note that once you create a Compound Clip, the size, framerate and all timeline settings are locked for that clip.

You asked the same question in Post Production section of forum. I have wrote my answer there.

viewtopic.php?f=3&t=217568

Along with Mads Johansen's answer, you can do it in fusion as well. Which was my first idea. You could use TimeSpeed node and Saver node in Fusion. Its simple but if you never done in fusion I'll wrote step by step guide.

In fusion add TimeSpeed node and set it to these settings.

In the Speed box take whatever number of frames you have in your composition and it will be listed in fusion, and divide that number by however many frames is one minute. In fusion you don't do frame rate, you do frame count. So you need to calculate based on your FPS how many frames is every minute. You can do this in various ways but in edit page viewer, you can choose frames to be seen to know how many there are in a minute based on your frame rate.

Once you know how many frames there is in the minute for your frame rate, and you can see the total number of frames by opening it in fusion. You can than do calculation directly in the Speed box of the TimeSpeed node.

For example if I have 100 frame long composition and I want to extract every tenth frame. I can use that box as calculator and enter 100/10 and it will give me 10.

Next is delay box, and you can leave that alone, since you are not using it for this.

The nest one is interpolation mode. set it to nearest so there is no interpolation of new frames, but skipping to existing frames.

That is all you need for time speed node. This should give you every tenth frame in my case and in yours it will be what you need.

Next is using Saver node to export the Tiffs. Add Saver node after time Speed node. And in saver node choose location where you want it to be saved by using Browse button.

By default saver node saves in openEXR format. If you need Tiff you can't choose if from the list, but you can enter .tiff for your extension of the file you are saving. This will save tiff images instead of OpenEXR or if you need JPEGs, you would add. jpg at the end.

Next you can limit the render range to only render the frames you need. So in the time ruler in fusion where the playback controls are. To the left there are two number fields. Starter frame and end frame for render range. Set the 0.0 and whatever your final frame number will be. For my example it would be 0.0 - 10.0

To start render, go to fusion menu up top and choose Fusion_Render All Savers.

That should be it. When its done, you should have Tiff image every so frames as you specified in the time speed.