Free online PPS to MKV converter

A PPS file is a PowerPoint slideshow, not a video; converting it to MKV produces a video version that can play in media players or be stored with other video files. The conversion also lets you set a fixed display time for slides that otherwise advance interactively.

What the PPS format is

PPS is the legacy PowerPoint Show format, created by Microsoft PowerPoint and also opened by LibreOffice Impress. It opens directly as a slideshow rather than in the usual editing view. Unlike a video, a PPS file contains slides and may include transitions or animations.

What the MKV format is

MKV (Matroska) is a container for video, audio, subtitles, and related tracks. It is useful for keeping multiple tracks in one file; playback depends on whether the media player supports the codecs inside the container. A slide-based MKV can contain video of the slides, with audio if the conversion method includes it.

Convert online on 101convert.com

1. Upload the PPS file to the converter.
2. Before converting, set show each page for to choose how long each slide is displayed. You can add multiple files for batch conversion; the per-file size limit is shown on the page.
3. Convert the file and download the MKV.

Convert offline with desktop software

LibreOffice Impress and FFmpeg

This free method works on Windows, macOS, and Linux. It makes a video from still slide images; PDF export does not retain PPS animations or transitions.

1. Open the PPS in LibreOffice Impress and use File → Export As → Export as PDF.
2. Use Poppler’s pdftoppm to render the PDF pages as PNG images: pdftoppm -png slides.pdf page. This creates files such as page-1.png and page-2.png.
3. In the same folder, run FFmpeg to make a video with each slide displayed for five seconds: ffmpeg -framerate 1/5 -start_number 1 -i page-%d.png -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" -c:v libx264 -pix_fmt yuv420p -r 30 slides.mkv. Change 1/5 to adjust the display time; for example, 1/8 gives eight seconds per slide.

Microsoft PowerPoint and FFmpeg

PowerPoint’s video export can include recorded timings, narration, transitions, and animations. On Windows, open the PPS and choose File → Export → Create a Video; select the timing and narration option you need, then export as MP4. Convert the MP4 container to MKV with FFmpeg: ffmpeg -i slideshow.mp4 -c copy slideshow.mkv. This remuxes the streams without re-encoding them, so it does not reduce video quality.

Quality and compatibility

The PDF-and-image method creates a silent video of static slides unless you add audio separately. PowerPoint video export is the better offline option when the PPS relies on animations, transitions, or narration. Check the resulting file in the intended player, since an MKV container does not guarantee support for every video or audio codec.