Fix FFmpeg incompatibility

[bibendovsky]

Possible solutions:

• Upgrade to FFmpeg v4+
• Replace FFmpeg with something else
• Postpone playback of full-motion videos until better times

[bibendovsky]

Replaced FFmpeg with custom audio decoders (43155ef).

[bibendovsky]

Embeded micro version of FFmpeg to playback full-motion videos (2138443).