Tweaked version of the playback speed tool.

[hutch--]

The first version was set to either 30 or 60 frame which was fine for US standard NTSC but many countries use the PAL standard of 25 - 50 frame, what I have done is add the PAL options to the speed settings so you can work in either. Buildable source in a reasonably simple dialog interface.

[K_F]

You should look at picking out the frame rates from the video header and then offer multiples of the original fps ?
Just a thought. :icon_mrgreen:

[mineiro]

Speedup2 port to linux x86-64, gtk3+, uasm.
Tested in Ubuntu, Mint and Kubuntu.

[mineiro]

bug correction:
If user press escape key inside open or save dialog so a reference to that dialog was lost.