Hi,
Using free OpenShot video editor:
I made a TikTok SL video using the free opensource OpenShot video editor (https://www.openshot.org/) because it can output to the vertical format HD 1920 height x 1080 length which anyone that wants to do TikTok or Instagram may want.
It's a little glitchy. The longer I worked in it (and this is for a one minute short), the more staticy the sound was and the more it seemed to be laggy or stuttery on viewing the video. However when I output it, the sound and video was fine. If you see my video, there are a couple places when the video jumps a little but that is my filming and editing and not the editor as I am still learning to do machinima and editing. OpenShot also seemed to save which was lucky because when it crashed I thought I lost everything but I didn't. It allows a lot of layers which is great if you are layering sounds.
I had tried HitFilm Express free version but it won't output to a vertical format. HitFilm let me work in a vertical format because it lets me create a custom size but when it came to exporting that didn't work out as well. It kept defaulting to one of the parameters HitFilm had which are all horizontal. And when I uploaded to TikTok, it got shrunk into the vertical size so became tiny. I'm going to redo that first one in OneShot.
I couldn't find anything else free that would export to a vertical format. Don't expect support on OpenShot but there is a forum I think. I really liked how much bigger my video seemed on TikTok when I can work in a vertical format and output to the HD 1920x1080 so while there are issues with OpenShot, I like it better than a couple of the other free ones I tried as they only output to horizontal.
My video is one minute. If you have the time, go check it out and let me know what you think. I would appreciate it. Music is by Winter Phoenix, another SL resident. There are a few people doing sl tiktok videos but I think it would be great if there were more of us:
https://www.tiktok.com/@kaylakatzz.woodrunner/video/6937317829838408966