Maximum size of an MP4 file when uploading?

[OpenGreenStreet]

How large can an MP4 file be when uploading? (I have an 18 GB video - 55 minutes.) Does it make sense to try?

[don-vip]

It's unlikely. We recently raised the bar to 8 GB for MP4 videos and I think I have a few videos that result in a webm video exceeding the Commons 5 GB limit. With a video of 18 GB I don't think it's even worth to try. What's the resolution? 8K?

[OpenGreenStreet]

@don-vip : Thank you for your feedback. Here are the details of the original video: Video specifications: 8.3 MP, 3840x2160, 19 GB, 54 minutes.
I now have a converted MP4 version (9.2 GB).
I have uploaded a converted 966 MB WEBM version to Wikimedia Commons. The quality of the WEBM is not great but acceptable..

[Amdrel]

This is tangentially related but we need to improve the error messages for when these kinds of videos fail to upload and also make it more clear what the restrictions are to users. Right now if a video is too large the error message with either say "Failed to determine the path of the downloaded video. Is the video too large?" or "Exit code: 153" with a bunch of confusing output, which doesn't really help the user.