How to Fix MP4 or MOV Videos Not Playing in PDF Files
Question details
Users are unable to play embedded MP4 or MOV videos inside PDF documents.

- Product
- Device & OS
- not provided
- Scenario
- Attempting to view or interact with multimedia content that has been embedded into a PDF file.
- Observed behavior
- The MP4 or MOV video fails to play, often displaying a blank space, an error message about missing codecs, or a warning regarding the retired Adobe Flash Player.
Verify that your PDF reader is updated to the latest version, as older versions may still attempt to rely on the discontinued Adobe Flash Player for media playback.
Use External Links for Video Playback
Since embedded video support varies greatly across different PDF viewers, hyperlinking to externally hosted videos ensures reliable playback for all users.
Interactive PDF multimedia workflows that depend on Flash are no longer supported. To guarantee that your audience can view the video content without compatibility issues, delivering the video separately or linking to a hosted version is the most reliable method.
Upload your MP4 or MOV video to a secure and accessible video hosting platform such as YouTube, Vimeo, or a cloud drive like Google Drive.
Take a screenshot of the video to use as an appealing thumbnail, and insert this image into your PDF document.
Select the inserted image in your PDF editor, choose the option to add a hyperlink, and paste the URL of your hosted video.
Save your updated PDF document, then click the image to ensure it successfully opens the video in a web browser.

Embed Videos Using Modern Acrobat-Compatible Workflows
If the video must remain embedded within the PDF, you need to ensure it uses widely supported codecs and that the PDF is exported using modern rich-media standards.
Seamlessly Manage PDF Links and Multimedia with WPS Office
WPS Office provides a highly compatible PDF editor that makes it incredibly simple to insert hyperlinks, add images, and create interactive documents without worrying about outdated media plugins.
- 1. Open your PDF in WPS Office: Launch WPS Office and open the PDF document where you want to add the video link.
- 2. Access the Link tool: Navigate to the 'Edit' tab on the top ribbon and click on the 'Link' button.
- 3. Set the hyperlink area: Draw a rectangular area over your text or thumbnail image where users will click to watch the video.
- 4. Insert the video URL: In the dialog box, select 'Open URL', paste the web address of your hosted video, and click 'OK' to apply.

Frequently Asked Questions
Why did Adobe stop supporting Flash Player in PDFs?
Adobe officially retired Flash Player at the end of 2020 due to ongoing security vulnerabilities and the widespread adoption of modern, open web standards like HTML5. Consequently, any older PDF multimedia content that relies on Flash will no longer function in any updated PDF viewer.
Can I still play MOV files in my older PDF documents?
Generally, no. Older PDFs often relied on QuickTime or Flash integrations that are now deprecated across modern operating systems and PDF readers. To view the content, you will likely need to extract the video and play it in a standalone media player.
Are there any file size limits when embedding MP4 videos in a PDF?
While the PDF specification itself does not enforce a strict file size limit for embedded media, excessively large videos can make the PDF file too large to share via email or open smoothly. Because of this, hosting the video externally and linking to it is often the preferred method.




