App crashes on Zidoo X9s with firmware version 1.4.x

[saerdnaer]

It looks like this app now longer works with the newer firmware releases for the Zidoo X9s and crashes when ffmpeg tries to read from hdmi input via stdin. Tests (with @derchrisuk) showed that the older firmware releases including 1.3.x don't lead to this crashes.

I suspect that the HDMI API has been changed by the manufacturer, and the system library bindings in https://github.com/robbi5/instreamer/tree/master/app/libs has to be updated to resolve this issue. The Readme.md of this project points to https://github.com/zidootech/VideoAndHdmiIN, but the classes.jar there was not updated, but it looks like one can get updated versions via mail. Other demo code repos e.g. include an 6 month old version commited with "add hdmi in record", compare https://github.com/zidootech/ZidooDigitalSignage/commit/aa4c597f1a2f6d4c7a1e6bc1f0b56bd528a4716c

But for me, using https://github.com/zidootech/ZidooDigitalSignage/blob/master/ZidooDigitalDemo/libs/classes.jar instead the one included in this project did not solve the crash, but maybe I just have to test again when I have more time.