straannick
New Member
Hello. Unexpected problems with synchronization of video and audio sources have arisen (Advanced Audio Properties-Sync Offset).
Usually I broadcast using the MixPre 6 II recorder as an audio source and two 4K webcams - Logitech Brio and AverMedia PW513. Video and audio synchronization was configured quite a long time ago. And so I decided to connect a third webcam LiteTrac. At first I synchronized MixPre 6 II and LiteTrac - delays of 429 and 0, respectively. But problems arose with other cameras. With delays of 0, Logitech is ahead of the MixPre sound by about 12 frames, and AverMedia by 13. Since fps is 30 frames, I set delays of 12 * 33 and 13 * 33 ms, respectively. To my surprise, I discovered that with such delays, Logitech and AverMedia are ahead of the sound by 9-10 frames. Then I increased the delay of one camera by another 9 * 33 ms, but practically nothing changed. I recorded this with screenshots, but before that I tried to synchronize for quite a long time by changing the delays in different ways and also did not achieve the result.
Has anyone encountered this? How could it be explained it and how to fix it?
Usually I broadcast using the MixPre 6 II recorder as an audio source and two 4K webcams - Logitech Brio and AverMedia PW513. Video and audio synchronization was configured quite a long time ago. And so I decided to connect a third webcam LiteTrac. At first I synchronized MixPre 6 II and LiteTrac - delays of 429 and 0, respectively. But problems arose with other cameras. With delays of 0, Logitech is ahead of the MixPre sound by about 12 frames, and AverMedia by 13. Since fps is 30 frames, I set delays of 12 * 33 and 13 * 33 ms, respectively. To my surprise, I discovered that with such delays, Logitech and AverMedia are ahead of the sound by 9-10 frames. Then I increased the delay of one camera by another 9 * 33 ms, but practically nothing changed. I recorded this with screenshots, but before that I tried to synchronize for quite a long time by changing the delays in different ways and also did not achieve the result.
Has anyone encountered this? How could it be explained it and how to fix it?
