Video and audio async

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StrangeQs

New Member
hey. started to make video podcasts using sony alpha III and IV cameras +audio technica AT2020 mics.

The problem is: while recording videos and audio via OBS, video and audio files have async. I do record it with choosing "video source" option in OBS and for audio, mics are connected with an analog mixer, then to audio interface (SSL2) and then to the laptop, macbook air 2020.

Can you please help me? anyone had such kind of problem before?
 
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Lawrence_SoCal

Active Member
Audio is MUCH easier/faster, in general to process than video. And you have the two following different data paths, so getting out of sync is not uncommon.
1 simplistic, and limiting but easy option, is to take audio and feed into camera so that audio and video are combined in the HDMI feed.
2 the other option is to manually sync the audio to the video, usually by delaying the audio (there is a specific setting for that)

I used an A/V Sync test video from
If the sync delay varies, that tends to be a sign of an under-powered computer (possibly thermal throttling in a laptop), or background tasks interfering (ie stuff running that probably doesn't need to/shouldn't be)
 
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