There is a nice bit of kit made by Kramer Electroncis that will let you inject Audio into a HDMI feed. The added bonus is that it scales as well ---- yep regardless of the input type or resolution you can output a scaled 1080i @ 50Hz, 1080p @ 50Hz. ie. 1080i or p 60Hz HDMI input converted and output as 1080i or p 50Hz!.
The model Number is
VP-435
Heres the product description:
The VP-435 is a high quality format converter for component video, computer graphics video signal, HDMI video and unbalanced stereo audio signals. It scales HDMI, component or computer graphics video and embeds unbalanced stereo audio to the HDMI output.
* HDTV Compatible.
* HDCP Compliant.
INPUTS:
1 HDMI connector.
1 UXGA on an 15-Pin HD F connector.
1 component video on 3 RCA connectors.
1 analog unbalanced stereo audio on a 3.5mini jack connector (for the HDMI input)
1 analog unbalanced stereo audio on a 3.5mini jack connector (for the UXGA input).
2 analog unbalanced stereo audio (left and right) on RCA connectors, 4dBm nominal.
OUTPUT:
1 HDMI connector.
OUTPUT RESOLUTIONS:
1080i, 1080p, 576i, 576p, 720p, 1080i, 1080p, WXGA, WSXGA, WUXGA, NATIVE, VGA, SVGA, XGA, SXGA, UXGA, 480i, 480p.
CONTROLS:
Front panel buttons, dry contact and infra red remote for menu driven OSD control.
ADDITIONAL CONTROLS:
Contrast, brightness, hue, saturation and sharpness; red, green and blue; Resolution, image size.
