UPDATE 2014.04.20

One must have the right tools for the job.

USED:

VirtualDub

VirtualDub Plugins:
DShowInputDriver-0.93 (Open MP4 files)
VirtualdubFFMpegPlugin_0824 (Open MP4 files)
xy-VSFilter_3.0.0.306_x64 (Subtitles) (see this: http://insurgencymod.blogspot.nl/2015/04/gif-tip-virtualdub-subtitles.html)

(NOTE VirtualDub FFMpegPlugin will work anywhere, VirtalDub DshowInputDriver needs "LAV Filters. Use "Video -> Full Processing Mode" and "Audio -> No Audio")

AVIDemux (Cut MP4 files without loss)
VLC ("e" (framy by frame) "shift + s" (screenshot))
Jasc Animation Shop 3.11 (ThinApp)

Jasc Animation Shop
http://www.freewaregeeks.com/?page=detail&get_id=228&category=18

The Jasc Animation Shop 3.11 installer file name is "ani311en.exe".

 File: ani311en.exe
 CRC-32: 15498870
 MD4: c49ef39932fe6f6c90bfe812d2d9b6fc
 MD5: 79d6726fbcd27eb94c8111d686f5ac2c
 SHA-1: 64b34a96815303279c3c64685a8b6342574dcc08

UNUSED:
QGifer (open source) (piece of shit)
Ulead Animation Shop (produces shit quality GIFs)

IMSIDB1E0212A5308882932570DE900A81D7F521FD752