Free online ODP to WEBM converter

Convert an ODP presentation to WEBM when a sharing platform, video player, or device accepts video but not presentation files. The result shows slides as a timed video rather than an editable deck.

What the ODP format is

ODP (OpenDocument Presentation) is an open format for slide decks, including text, images, charts, and presentation effects. LibreOffice Impress and Apache OpenOffice create ODP files; they are also used to exchange presentations between office applications.

What the WEBM format is

WEBM is a video container commonly used for web playback. It typically contains VP8 or VP9 video and may contain Vorbis or Opus audio. A video file is easier to play in many browsers and video platforms, but unlike an ODP it does not retain editable slide objects.

How to convert ODP to WEBM

Online on 101convert.com

1. Upload the ODP file on the converter page. Multiple files can be added for batch conversion; check the per-file size limit shown there.
2. Set show each page for to choose how long each slide is displayed.
3. Start the conversion and download the WEBM file when it is ready.

Offline with desktop software

LibreOffice, Poppler, and FFmpeg: This free workflow works on Linux and macOS, with equivalent command-line builds available for Windows. It turns each PDF page into a still image, so it is suitable for static slides, not for preserving slide animations or narration.

1. Export the presentation to PDF: libreoffice --headless --convert-to pdf --outdir . deck.odp.
2. Render the PDF pages to PNG files at 150 dpi: pdftoppm -png -r 150 deck.pdf slide.
3. Create a video that displays each page for five seconds: ffmpeg -framerate 1/5 -i slide-%d.png -vf fps=30 -c:v libvpx-vp9 -crf 32 -b:v 0 -pix_fmt yuv420p deck.webm. Change 1/5 to set a different display duration.

Microsoft PowerPoint and FFmpeg: On desktop PowerPoint for Windows, open the ODP and export it as an MP4 using File → Export → Create a Video. Then encode that video as WEBM with FFmpeg: ffmpeg -i deck.mp4 -c:v libvpx-vp9 -crf 32 -b:v 0 -c:a libopus deck.webm. Review the imported presentation before exporting because ODP effects may not transfer exactly.

Quality and compatibility

WEBM output cannot preserve the editable slide structure of ODP. The PDF-and-image workflow also omits transitions, animations, and audio; use a presentation application's video export when those elements matter. The FFmpeg examples use VP9 and may take longer to encode than lower-complexity settings; lowering the CRF value generally increases video quality and file size.