Export PNG files from a BRaw file

How to automaticaly export pictures (PNG files) every 15 seconds from a BRaw file ?

Uhm without scripting the easy way could be to. calculate a right speed up to obtain from xx seconds a frame every 15sec sequenze (an huge speed up), then go to delivery and export.
Ps why every 15sec?


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What is the reason for this particular export? And why PNG's? Why 15 sec?

My request has changed. 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.

My request has changed. 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 same answer give you like before, calculate the video acceleration to obtain 1 frame per minutes and export.

My request has changed. 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.

You could use TimeSpeed node and Saver node in Fusion.

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.