How can I use ffmpeg to convert a video file to the webm format?

To convert a video file to the webm format using ffmpeg, you can use the following command in the terminal:

ffmpeg -i inputvideo.mp4 -c:v libvpx -b:v 1M -c:a libvorbis outputvideo.webm

This command will take the inputvideo.mp4 file and convert it to the outputvideo.webm file using the libvpx video codec and libvorbis audio codec. The -b:v 1M flag sets the video bitrate to 1 megabit per second.