- Posts: 1
- Joined: Thu Jan 13, 2022 12:18 am
- Real Name: Alexis Wilke
Thu Jan 13, 2022 1:50 am
My company has two boards, audio & video work just fine on our demonstration system.
However, on my developer's system, I don't get any audio through the HDMI cable.
I'm wondering what I could do to make it work. It used to work a while back, it just somehow stopped working. I tried to disconnect/reconnect the HDMI many times on two different computers and still silence...
Note that I do receive frames of audio, only those are just silence (all zeroes).
The video works as expected.
One difference between the two systems:
1) the demo system sends me YUV (8 bits) video;
2) my two computers send RGB (10 bits), but the audio worked a while back even with that format; also I don't think that the video format would affect the audio?!
My dev. computer is different (different motherboard, memory, PCI setup, etc.), but both are running Ubuntu 18.04 on Intel based motherboards (Xeons).
I use the following SDK file:
Blackmagic_DeckLink_SDK_12.1.zip
And the driver I found in here:
Blackmagic_Desktop_Video_Linux_12.1
The Ubuntu software is kept up to date.
The software is based on your capture.cpp example. Here is the list of deckLink supported modes I find on the Intensity Pro 4K that we use (nothing about Audio, though):
I'm wondering how could I debug this issue on my computer?
However, on my developer's system, I don't get any audio through the HDMI cable.
I'm wondering what I could do to make it work. It used to work a while back, it just somehow stopped working. I tried to disconnect/reconnect the HDMI many times on two different computers and still silence...
Note that I do receive frames of audio, only those are just silence (all zeroes).
The video works as expected.
One difference between the two systems:
1) the demo system sends me YUV (8 bits) video;
2) my two computers send RGB (10 bits), but the audio worked a while back even with that format; also I don't think that the video format would affect the audio?!
My dev. computer is different (different motherboard, memory, PCI setup, etc.), but both are running Ubuntu 18.04 on Intel based motherboards (Xeons).
I use the following SDK file:
Blackmagic_DeckLink_SDK_12.1.zip
And the driver I found in here:
Blackmagic_Desktop_Video_Linux_12.1
The Ubuntu software is kept up to date.
The software is based on your capture.cpp example. Here is the list of deckLink supported modes I find on the Intensity Pro 4K that we use (nothing about Audio, though):
- Code: Select all
2022/01/12 19:11:25.003068869: information(9191/9191): available Blackmagic capture card: "Intensity Pro 4K".
2022/01/12 19:11:25.003068869: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "525i59.94 NTSC" (1853125475).
2022/01/12 19:11:25.003068869: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "625i50 PAL" (1885432864).
2022/01/12 19:11:25.003068869: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "1080p23.98" (842231923).
2022/01/12 19:11:25.003068869: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "1080p24" (842297459).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "1080p25" (1215312437).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "1080p29.97" (1215312441).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "1080p30" (1215312688).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "1080p50" (1215313200).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "1080p59.94" (1215313209).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "1080p60" (1215313456).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "1080i50" (1214854448).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "1080i59.94" (1214854457).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "1080i60" (1214854704).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "720p50" (1752184112).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "720p59.94" (1752184121).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "720p60" (1752184368).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "2160p23.98" (879440435).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "2160p24" (879440436).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "2160p25" (879440437).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "2160p29.97" (879440441).
2022/01/12 19:11:25.007068865: information(9191/9191): deckLink "Intensity Pro 4K" supports mode: "2160p30" (879440688).
2022/01/12 19:11:25.267068694: information(9191/9191): found a Blackmagic capture card named "Intensity Pro 4K".
I'm wondering how could I debug this issue on my computer?