Hopefully a Decklink guru may know what’s going on here:
Trying to assemble edit to a DVW-A500 via SDI and embedded audio. After recording, picture looks fine, but the audio has a ‘gritty’ texture when playing back (also via SDI embedded). Sounds almost like mis-matched sample-rates (media is uncompressed 10-bit NTSC, 16bit, 48Khz audio.
However, if use the “print-to-tape” function via the same signal path, everything sounds great. Huh???
Anyone experienced this whacky behavior before?
Decklink 6.3 drivers
NTSC reference via Tektronix SG
It’s a deck sync issue. Along with the audio problem, you’ll probably notice that the error condition lights on the deck are red. If you have both the input and output connected between the deck and the decklink card, you’ll have this problem. Disconnect your output from the deck to the card while recording.