How to Play MP4 Videos Embedded in PDFs on Different Computers
Question details
The user needs to know how to ensure embedded MP4 videos in a PDF file play correctly when shared and opened on different computers.

- Product
- Device & OS
- not provided
- Scenario
- Sharing a PDF containing an embedded MP4 video with colleagues or opening it on a secondary computer.
- Observed behavior
- The video plays on the original computer but fails to play when opened in web browsers, email previews, or basic PDF viewers on other machines.
Ensure the recipient has a dedicated desktop PDF reader installed, as built-in browser viewers and email previewers typically block or lack support for rich media playback.
Open the PDF Using a Desktop PDF Application
Opening the PDF in a dedicated desktop application ensures proper rendering of embedded media formats that web browsers and email clients usually block.
Embedded media in PDFs relies on specific rendering engines. Browsers like Chrome or Edge use lightweight PDF previewers optimized for text and images, which intentionally disable video and interactive scripts for speed and security.
Download the PDF file directly to your local computer's hard drive instead of clicking to open it directly from an email attachment.
Right-click the downloaded PDF file, select 'Open with', and choose a dedicated desktop PDF viewer like Adobe Acrobat Reader or WPS Office.
Click 'Play' on the video placeholder. You may need to click 'Options' and select 'Trust this document one time only' or 'Trust this document always' if prompted by the reader's security settings.
Attach the MP4 to the PDF and Create a Launch Link
Instead of embedding the video directly onto the page, attach the video file and link to it, utilizing the computer's native media player for maximum compatibility.
Easily Play and Manage Embedded Videos with WPS Office
WPS Office provides a powerful, built-in PDF reader that supports various interactive elements. You can seamlessly view, add, and manage rich media and attachments in your PDF documents without needing heavy secondary software.
- 1. Install WPS Office: Download and install WPS Office on your computer.
- 2. Open the PDF: Open your PDF file containing the video or attachment in WPS PDF.
- 3. Play the media: Click directly on the media element or navigate to the 'Attachments' sidebar (paperclip icon) to play the MP4 file instantly.

Frequently Asked Questions
Why does my embedded PDF video say 'Flash Player is required'?
Adobe Flash was officially discontinued at the end of 2020. If an older PDF was created using Flash-based media embedding (like FLV or SWF files), modern PDF readers will no longer support it. The document author must re-embed the media as an MP4 using a modern H.264 video codec.
Can I play PDF videos on an Android or iOS mobile phone?
Playback on mobile devices depends heavily on the specific PDF viewer app being used. Standard built-in viewers on iOS and Android often do not support embedded video playback. Users typically need to open the PDF in a dedicated desktop-grade app or rely on file attachments rather than inline embedding.
Is there a file size limit for embedding MP4s in a PDF?
While the PDF format doesn't have a strict hard limit for media, embedding large MP4 files will drastically increase the PDF's overall file size, making it difficult to email or share. It is highly recommended to keep videos compressed under 20MB or to hyperlink out to externally hosted videos (like YouTube or Google Drive) instead of embedding them.




