Showing rendering progress

[fbruetting]

Since rendering can take quite some time, it would be nice if the a progress bar could be implemented when rendering is done. Maybe in place of the stop button, with making the stop-button appear on mouse-over of the progress bar, or showing an (x) symbol on the right side of the bar?

[phw]

Not sure if a real progressbar is feasible, depends on whether I can get a meaningful progress from the file conversion. But the button already changes to a "Rendering…" label while saving. Adding an animated spinner icon to this would probably improve it.

[fbruetting]

Showing status is fine, but showing progress would be very nice for longer screencasts!

[phw]

I had a quick look into this. Currently I am calling ImageMagick convert as a command. It has a `-monitor' option, but at least for GIF conversion it is not helpful for building a progress report, see https://gist.github.com/phw/500244f21235ad9239833d18d4b72007

It looks like it would be possible by using ImageMagick via its C API, see http://stackoverflow.com/questions/31666616/monitor-imagemagick-convert-progress-with-python

That's something I wanted to do anyway eventually, but I won't be able to look into this any time soon.

[phw]

If somebody wants to work on this feel free to give it a go.

[phw]

Just as an update: With the use of gifski (#212) there is a nice progress bar output on console we could use to gather progress details.

[phw]

There is now at least a spinner during the processing, this will be in the 1.2.0 release. I will see if it is feasible to get progress information in a later release.

[Wojtekb30]

Hello. Could I try to add a progress bar, or progress in % (if it hadn't been added already)?