The exact process depends on the website or application you are using: :
: Use the tag to embed a hosted MP4 file directly: . How do I post videos in 'add media'. Please help - Facebook 11151mp4
: If the platform has file size limits, upload the video to YouTube and paste the video link into your post. Discussion Forums (phpBB, MyBB, etc.) : The exact process depends on the website or
: Some forums use specific tags like [vids]URL[/vids] or [video]URL[/video] to embed an MP4 file hosted on your own server. Custom Websites : Discussion Forums (phpBB, MyBB, etc
To make a post with an MP4 file, you generally need to upload it directly to the platform's media or attachment section or embed a link from a video hosting site. Methods to Post an MP4 File