Joel Goodman wrote:Hey all,
I can see it is not an uncommon problem, but I was wondering if anyone has a definitive solution to the issue of picture/audio lag (approx 2 frames) between the SDI output and HDMI output of these units? How do studios usually resolve this so the picture and audio going to the client monitor (in my case an LG tv on the wall) is in syc with the SDI output's audio (going to a sony monitor).
I have found several other posts describing the problem, but none actually solving it.
any help appreciated
Joel
Well-question is why there is such a difference. There should be no delay between SDI and HDMI output.
Another rule- don't split audio and video signal. It's just asking for sync problems.
Most TVs have about 20-50ms delay for video, so about 1 frame or so.
Studios solve it by using broadcast monitors which are designed to have <1frame processing delay (or compensate for any delays).
You can also use hardware units to delay audio, but they are quite expensive.