add tyPreview batch processing optional join feature

[manueunam]

Hi Tyson,

as thread subject, my suggestion is to add a control box to say tyPreview to join all the files generated into one big file,
and, eventually, another one to discard all single files.

Thank you,
Man

[tyFlow]

I think this is beyond the bounds of tyPreview's scope. I would recommend exploring ffmpeg, as it has this type of functionality (join all imgs in folder into mp4, for example)