welcome.
unfortunately, iNaturalist doesn’t really support video. some people turn their videos into animated GIFs and load those, but personally, i think that’s a bad workflow. when i have video to share, i usually do the following:
- load the video to a video-sharing site (ex. YouTube)
- load an observation to iNaturalist that includes a photo and audio file
- in the observation’s description, add a link to the video on the video-sharing site.
here’s an example of one of my observations created using the workflow described above: https://www.inaturalist.org/observations/72320388
a lot of video players will allow you to extract screenshots from your video, and there are various video editing and sound editing programs that can help extract a sound file from your video.