The HDMI port supports 2 channel stereo audio. Please check GitHub for audio issues under Firefox OS.

APC supports MPEG-1, MPEG-2, MPEG-4, VC1 and H.264 video codecs. For APC Paper and Rock please refer to the known issues on GitHub for codec support.

APC hardware is designed to support video resolutions up to 720p, however this not met under the current build of the Firefox OS for APC and can be found in our list of Known Issues on GitHub.