Use Pro Capture card to capture compressed audio
Scenario
Pro Capture cards doesn't offer the access to capturing compressed audio by default. But users can realize
this function by modifying the EDID of the capture card.
Solution
Get the default EDID of the capture card
In your video capture software, select a channel of the Pro Capture card as the video input device,
then
call the driver panel of capture card.
In the
HDMI tab of the driver panel, click
Save in the
EDID section to save the EDID file of the specified channel to local storage.
If you want to export EDID files for other channels, repeat steps i and step ii.
Modify the EDID of the capture card
Open the default EDID file in the software
AW EDID Editor.
In the
Instanciated blocks section in the bottom left area of the
CEA Extension tab, select the
Audio to open the
Audio descriptors page.
In the "Audio descriptors" page, click the "+" button to add an audio descriptor tab. (As shown
in the figure below, the new tab's name is n°3.)
Set the values you need in the audio descriptor tab. In this example, the following parameters
are set:
Format: AC-3
Number of Channels: 6
Supported Sampling Frequencies: 32, 44, 48, 88, 96, 176, 192 kHz
Maximum Bit Rate: 640 KHz
If you need to add other audio formats, repeat step iv and step v.
Save the modified EDID file.
Import new EDID into the capture card
In your video capture software, select a channel of the Pro Capture card as the video input device,
then
call the driver panel of capture card.
In the
HDMI tab of the driver panel, click
Load in the
EDID section to import the new EDID file to the specified channel.
If you want to import the new EDID file into other channels, repeat step i and step ii.