How to Fix Embedded AVI Videos Not Playing in Adobe Acrobat PDFs
Question details
Users are unable to play embedded AVI videos in PDFs using Adobe Acrobat Pro DC, often resulting in application freezes or DDE command errors.

- Product
- Adobe Acrobat Pro DC
- Device & OS
- not provided
- Scenario
- Attempting to play legacy embedded AVI videos within Beamer-generated PDF documents.
- Observed behavior
- The AVI videos fail to play, and the Acrobat application may freeze or display an error message stating 'Acrobat failed to send a DDE command'.
Before proceeding, check if you have the original video files available, as you will need them to convert the unsupported AVI format into a modern, supported format like MP4.
Convert Videos to MP4 and Re-embed in the PDF
Since Adobe Acrobat no longer supports Flash-based rich media or legacy AVI formats, converting your videos to MP4 is the most reliable fix.
Adobe Acrobat has officially deprecated support for Flash Player and legacy video workflows. This means older video formats like AVI will no longer play natively and can cause the application to freeze or display DDE errors.
To resolve this, you must update your PDF authoring workflow to use H.264 encoded MP4 files, which are natively supported by modern PDF readers.
Find the original AVI video files used in your Beamer project or PDF authoring tool.
Use a reliable video conversion tool to transcode your AVI files to MP4. Ensure the video codec is set to H.264 and the audio codec is AAC for maximum compatibility.
If you are using Beamer (LaTeX) or another document creator, update your source code or project file to link the newly created MP4 files instead of the old AVI files.
Generate the PDF document again and open it in Acrobat to verify that the MP4 videos play seamlessly without triggering the DDE command error.
Easily Manage and Edit PDFs with WPS Office
Avoid playback issues and application freezes by using WPS Office. WPS PDF offers a smooth, lightweight environment for viewing, editing, and managing your PDF documents, along with seamless compatibility for modern files.
- 1. Download and Install WPS Office: Get the free WPS Office suite from the official website and install it on your device.
- 2. Open Your PDF Document: Launch WPS PDF and click on 'Open' to browse and select the PDF file you want to view or edit.
- 3. View and Manage Content: Navigate through your document smoothly. Use the intuitive toolbar to read, highlight, or edit text and layout settings as needed.
- 4. Save Your Changes: Once your edits are complete, click 'Save' or export your document to ensure all elements are perfectly preserved.

Frequently Asked Questions
Why did my embedded AVI videos suddenly stop working in Acrobat?
Adobe Acrobat has officially removed support for Flash-based rich media and legacy video workflows. This update means older embedded media like AVI will no longer play and requires conversion to modern formats.
Can I fix the DDE command error by reinstalling Adobe Acrobat?
No, reinstalling the software, rolling back graphics drivers, or changing display settings will not resolve this error. The issue stems from deprecated video format support, not a software installation or driver glitch.
What video format should I use for PDFs instead of AVI?
It is highly recommended to use the MP4 format encoded with H.264 video and AAC audio, as this is the standard supported rich media format for modern PDF readers.




