Uploading the file to Adobe Express and then re-downloading it as a new MP4 often clears up metadata issues that prevent social media posts from working. 3. Posting via Automation Tools
If you are using a tool like and seeing an error when posting an MP4, ensure you are running the latest version. Some users have reported issues where MP4s work for YouTube but fail on Facebook/Instagram unless manually uploaded or re-processed. Ajb08249 mp4
If this is a video you’re ready to share, choose a vibe that fits the content: Uploading the file to Adobe Express and then
If the file is too large (e.g., over 50MB for certain web players), try compressing it. Reducing the file size can often fix "failed to upload" errors. over 50MB for certain web players)