Free online ODT to MKV converter

A presentation system or video player that accepts MKV cannot open an ODT document as a video. Converting the document renders its pages as still frames, with each page displayed for a chosen duration.

What the ODT format is

ODT is the OpenDocument Text format for editable word-processing documents, including text, images, tables, and page layout. LibreOffice Writer creates ODT files; Microsoft Word and other office programs can also open them. They are commonly used for reports, letters, and other paginated documents.

What the MKV format is

MKV, or Matroska, is a multimedia container that can hold video, audio, subtitles, and metadata. It is used for video playback and distribution, and can contain multiple tracks. An ODT document has no video or audio stream, so conversion produces a video of its rendered pages rather than editable document content.

How to convert ODT to MKV

Online on 101convert.com

1. Upload the ODT file on the 101convert.com converter page. Multiple files can be added for batch conversion; the page shows the per-file size limit.
2. Set show each page for to choose how long each document page appears.
3. Start the conversion, then download the MKV file.

Offline with desktop software

For a local workflow, use LibreOffice to render the document and FFmpeg to assemble the page images into an MKV. LibreOffice runs on Windows, macOS, and Linux; FFmpeg is available for those systems as well. This workflow keeps the source file on your computer.

1. In LibreOffice Writer, open the ODT and choose File → Export As → Export as PDF.
2. Use Poppler’s pdftoppm utility to render the PDF pages to PNG images: pdftoppm -png -r 150 input.pdf page. This creates files such as page-1.png and page-2.png.
3. With FFmpeg installed, create a video that holds each page for five seconds: ffmpeg -framerate 1/5 -i page-%d.png -vf "fps=25,scale=trunc(iw/2)*2:trunc(ih/2)*2" -c:v libx264 -pix_fmt yuv420p output.mkv. Replace input.pdf with the exported PDF’s name; change 1/5 to a different frame rate if you want another page duration.

Quality and limitations

The video preserves the page appearance at the chosen render resolution, not the document’s selectable text, links, or editable layout. Check page breaks, fonts, and image clarity in the PDF before encoding; increasing the pdftoppm resolution improves detail but creates larger intermediate images. This workflow creates silent video, and every page remains static for its display duration.