Question / Help how to get video from obs and sync it to audio from audacity in windows movie maker live

[nathanael]

how to get video from obs and sync it to audio from audacity in windows movie maker live?
ok so i am using obs to record my video and audacity to record sound then i use windows movie maker live to combine them (yeah i know windows movie maker live is not a good choice but it is all i have). the problem i am having is that the video is just a little bit faster then the audio. so after a few seconds the audio and video do not line up and this gets worse the longer it goes. the only way i know how to fix it is to slow the video down but that is very time consuming to get it just right. i have tried to set the bit rates and any other setting in audacity and obs to the same thing hoping that would fix it but it did not. so does anyone have any suggestions on what settings to use or are there any other ideas. i am doing all this on a windows 10 tables so i don't have a lot of computing power to do much.

 

[Kjell Edvard Medhaug]

When you record audio and video separately, I believe you need a timecode to get proper sync. Without that, your sources are likely to drift off like you are experiencing now. Even with high quality video and audio hardware and a good CPU, the system may drop the odd sample instance/video frame upon recording. Even in a perfect world, such drop events will skew the alignment of your files slightly. If you do everything on a tablet, running Windows 10 (perhaps with other processes in the background battling for resources) you cannot expect a perfect result.

"Syncronizing" bit rate will do nothing to help, because data for video and audio are inherently different.
If you shoot a video with low quality, you may have 16 kb/s of audio (acceptable for speech) and 300 kb/s video (low res, low frame rate, prominent pixellizing). A high quality recording may have 5+ Mb/s for video and 1,5Mb/s audio, which should be passable for viewing on a cinema screen and for music listening. (Note that these figures are only rough guidelines, as bitrates may vary considerably due to technology, like the use - or not - of data compression.)

Solutions (pick one):

• Record audio with video (single file, like most people do)
• Get timecode support (like the pros do)
• Fiddle with your data to get proper sync. (that's what you are doing now, right?)

 

[nathanael]

well i cant record audio with obs because it shudders and cuts in and out, i tried to fix it but i cant figure out why it does it. but if i use audacity to record audio then the audio is fine. if you know how to fix the audio in obs that would be great. as for the timecode thing, how would i set that up and use it?