Free online PPS to AVI converter

A device or playback system that accepts AVI but cannot open a PowerPoint slideshow may require the slides as a video. Converting also lets you play the presentation in video software, though animations and narration may need a separate capture or export step.

What PPS is

PPS is a PowerPoint Slide Show file, usually made with Microsoft PowerPoint and also openable in LibreOffice Impress. It contains presentation slides and may include transitions, animations, timings, audio, or video; opening a PPS normally starts the slideshow rather than the editing view. PPS is the older PowerPoint binary format, while PPSX is its newer counterpart.

What AVI is

AVI is a video container, not a single video codec. It can hold video and audio encoded in different formats, so player support and quality depend on the codecs inside it. AVI is useful when a specific editor, player, or older device requires that container, but it does not guarantee compatibility with every AVI file.

How to convert PPS to AVI

Online on 101convert.com

1. Upload the PPS file to the converter and choose AVI as the output format.
2. Before converting, set show each page for if you want to specify how long each page is displayed. Multiple files can be converted in one batch; the page shows the per-file size limit.
3. Start the conversion and download the resulting AVI file.

Offline with desktop software

Free: OBS Studio and FFmpeg

This method records the slideshow as it plays, so it can capture transitions, animation, and audio that appear during playback. OBS Studio runs on Windows, macOS, and Linux; FFmpeg then encodes the recording as AVI.

1. In OBS, add a window or display capture source and start recording.
2. Open the PPS, play the slideshow from beginning to end, then stop the recording. OBS commonly saves recordings as MKV or MP4.
3. With FFmpeg installed, convert the recording using:

ffmpeg -i recording.mkv -c:v mpeg4 -q:v 4 -c:a libmp3lame -q:a 4 presentation.avi

Replace recording.mkv with the recording’s actual filename and extension. This encodes MPEG-4 video and MP3 audio; the FFmpeg build must include MP3 encoding support.

Microsoft PowerPoint and FFmpeg

Desktop PowerPoint can export a presentation as a video, but its available export formats vary by version and commonly include MP4 or WMV rather than AVI. Open the PPS, then use File → Export → Create a Video; choose recorded timings and narrations if available, or set a duration per slide. Export the video, then use FFmpeg to create AVI, for example:

ffmpeg -i presentation.mp4 -c:v mpeg4 -q:v 4 -c:a libmp3lame -q:a 4 presentation.avi

Change the input filename and extension to match PowerPoint’s exported video. If the export is WMV, use its WMV filename instead.

Quality and limitations

A fixed page duration produces a timed sequence of slides; it may not reproduce the original animation, narration, or embedded media. Recording playback or exporting through PowerPoint is preferable when those elements matter. AVI quality and playback compatibility depend on the selected codec, so check that the target device supports MPEG-4 video and MP3 audio before using the example FFmpeg settings.