Free online PPSM to AVI converter

A PPSM presentation may need to become a video when a playback device or editing program accepts AVI but cannot open PowerPoint shows. Conversion renders the slides into timed video rather than preserving an editable presentation.

What the PPSM format is

PPSM is the macro-enabled PowerPoint Show format, used for presentations that open in slide-show mode. Microsoft PowerPoint creates PPSM files; they can contain slides, animations, timings, audio, and VBA macros. You may receive one when someone shares a presentation intended to play directly.

What the AVI format is

AVI (Audio Video Interleave) is a video container supported by many older players, devices, and editing applications. It can hold different video and audio codecs, so an AVI file’s compatibility depends on the codecs used. AVI is useful for legacy workflows, but may be larger than a comparable MP4.

Convert online on 101convert.com

1. Open the PPSM-to-AVI converter on 101convert.com and upload the presentation.
2. If needed, set show each page for before converting. The page allows batch conversion and displays the per-file size limit.
3. Start the conversion, then download the AVI file.

Convert offline with desktop software

Use Microsoft PowerPoint to render the show, then the free, open-source FFmpeg program to create AVI. PowerPoint is available for Windows and macOS; FFmpeg runs on Windows, macOS, and Linux. FFmpeg cannot render PPSM files directly.

1. Open the PPSM in PowerPoint. Enable macros only if you trust the file; the resulting video will not contain VBA code or interactive slide behavior.
2. Choose File → Export → Create a Video, select the available video quality and timing options, and save the rendered file as MP4 when that format is offered. Some PowerPoint versions offer a different video format.
3. Install FFmpeg and convert the rendered video, substituting its filename if necessary:
   ffmpeg -i presentation.mp4 -c:v mpeg4 -q:v 4 -c:a libmp3lame -q:a 4 presentation.avi

Quality and compatibility

Slide timing determines how long each slide appears; animations and transitions are rendered as video, not retained as editable effects. Review the output because the conversion may not preserve every presentation feature. AVI compatibility varies with its codecs, so use a player or editor that supports MPEG-4 video and MP3 audio.