Useful Tools - Video

Notes and reminders on some assets and modes.

Video format

.Webm is buggy windows? and have had better results with .ogv.

FFMPEG: Converting video examples

Using FFMPEG when converting from mp4 this file will be twice the size of the mp4 (6)

ffmpeg -i input.mp4 -c:v libtheora -qscale:v 6 -c:a libvorbis -qscale:a 6 outputname.ogv

Take 10 seconds of video starting at 12 seconds * This lower quality (3) will produce about the same size as the mp4*

ffmpeg -ss 12 -t 10 -i input.mp4 -c:v libtheora -qscale:v 3 -c:a libvorbis -qscale:a 3 outputname.ogv

  • Join with other audio

ffmpeg -i "video.avi" -i "audio.ogg" -map 0:v -map 1:a -c:v copy -codec:v libtheora -qscale:v 6 -codec:a libvorbis -qscale:a 6 output.ogv

  • Reverse

ffmpeg -i inputvideo.ogv -vf reverse outputvideo_reversed.ogv

  • Join

ffmpeg -i "concat:in.ogv|in2.ogv" -codec copy output.ogv

  • Create image frames

ffmpeg -i Whirl.mp4 "%03d.png"

  • Image to OGV

ffmpeg -framerate 25 -i image_%d.png -qscale:v 6 test2.ogv