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.mp4 videos usually use h264 compression (and now h265 for 4K/HDR), which is not free or open source. .webm uses VP8 or VP9.
by mr_toad 8y ago
.mp4 videos usually use h264 compression (and now h265 for 4K/HDR), which is not free or open source. .webm uses VP8 or VP9.
- andrewl-hn 8y agoIt is kinda-sorta free and open source, though (at least the decoding part). Cisco pays for their codec, and as long as you use their implementation you are covered by their license. Specifically, to be covered you have to download a binary release from https://github.com/cisco/openh264/releases https://github.com/cisco/openh264/releases during the installation to be covered by Cisco's MPEG LA patent license, but they provide builds for most major platforms.