If the file does not open, try renaming the extension to .avi or .mov , or use a repair tool.
To reduce file size without significant quality loss, use Handbrake to convert the file to H.265/HEVC format. 2. Likely "Dodo" Content Contexts Dodo (442) mp4
If the file needs to be converted, use Handbrake [handbrake.fr] (open source) or online converters like CloudConvert [cloudconvert.com] to change formats if necessary. If the file does not open, try renaming the extension to