Question / Help Calculate the latency of the LGP Lite

[Paolo07700]

Hello,

I want to use a second PC to encode my stream, so leave my main PC alone to play!
I have an Avermedia LGP Lite, and a desktop PC (Athlon X3, 4GB RAM).

It works, but I'm looking for a way to calculate the latency of the LGP Lite to syncronize my webcam and my voice!

Ideas ?

Thanks!

 

[koala]

Make it so that you have the monitor of your gaming PC and the monitor with the preview window of OBS side by side. Take a video of both with your smartphone that you have both side by side in the video. Do something visible in your game. Load the video into a media player where you can display the exact timestamps of each video frame. In the video, search for the frame of the visible action on your gaming PC monitor and notice the timestamp, then the same on the preview monitor. Calculate the difference of the timestamps.
A media player with exact display of timestamps is Media Player Classic.

 

[FerretBomb]

Just do a clap-test. Record, clap on-camera, load the recording into a video editor. Find the frame with the audio hit, then step forward one frame at a time and count until your hands meet. Multiply by ms-per-frame (16.7 for 60fps, 33 for 30fps). You have the ms offset now.

If you mean to sync the gameplay audio/video, plug your streaming machine's video into the cap card. Capture a reference blink/beep both with window/game capture, and via the capture card. Again, count the frames in between, and you have the capture card's latency delta, which should be good-enough to rough it in.

As a side note, an old Ath X3 isn't going to do much good when it comes to real-time video encoding. Tossing a crappy old machine you have lying around as an "encoding machine" will result in LOWER performance for most people, along with adding unnecessary extra complication to your setup. Generally it's a better idea to just use NVENC if you have a 10 or 20-series card in your gaming system, outside of some VERY specific edge cases.

Remember that if you are going 2PC, the stronger CPU should ALWAYS be in the encoding system.