change fps to duration to account for changes to imageio

[aelefebv]

Closes: https://github.com/napari/napari-animation/issues/174

[aelefebv]

Alternatively, we could keep fps as a parameter and translate it to duration before passing it to imageio via duration=1000/fps

[jni]

Alternatively, we could keep fps as a parameter and translate it to duration before passing it to imageio via duration=1000/fps

Personally this would be my preference, especially because you could gate that on the imageio version, so there would be no disruption at all to any users (even those with older imageio).

[jni]

I also think it's easier to think about fps

[alisterburt]

Thanks for the PR @aelefebv ! Much appreciated :-)

I agree with Juan here, we should not mirror the imageio API and should instead keep ours consistent with FPS

[aelefebv]

Makes sense to me! Just changed it back to fps and now passing in duration to get_writer.

And thanks again for the great plugin :)

[jni]

Hmmm, perhaps we need a try/except or if/else somewhere to account for multiple imageio versions? The tests are failing with the current changes:

   E       TypeError: FfmpegFormat.Writer._open() got an unexpected keyword argument 'duration'

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (a9ca7a7) 86.25% compared to head (922e8f2) 86.26%. Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #182 +/- ## ========================================== + Coverage 86.25% 86.26% +0.01% ========================================== Files 26 26 Lines 1011 1012 +1 ========================================== + Hits 872 873 +1 Misses 139 139 ```

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[psobolewskiPhD]

@jni The duration kwarg is for pillow plugin only (see https://github.com/imageio/imageio/issues/992#issuecomment-1567479878 ) so I just reverted the change for ffmpeg. I think this is good to go, unless you prefer to not have the duration setting in the try: -- could just do it in the imageio call.