Build FFmpeg #110

Job	Run time
Pre Checks	1s
Build base image	1m 39s
Build target base image (win64)	1m 37s
Build target base image (win32)	30s
Build target-variant image (win64, gpl)	3m 27s
Build target-variant image (win64, gpl 7.0)	4m 7s
Build target-variant image (win32, gpl)	3m 39s
Build target-variant image (win32, gpl 7.0)	4m 35s
Build ffmpeg (win64, gpl)	9m 48s
Build ffmpeg (win64, gpl 7.0)	9m 1s
Build ffmpeg (win32, gpl)	8m 37s
Build ffmpeg (win32, gpl 7.0)	7m 18s
Publish release	2m 19s
	56m 38s

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