Version 20170610 with hwaccel for rpi

Based on ccrisan's version 20170610, but with hwaccel for Raspberry Pi.

To get the optimum movie quality, tune the following:

• resolution
• fps
• movie quality

The below configuration is a good default:

• Resolution: 800 x 600
• fps: 20
• Movie format: H.264
• Movie quality: 75%