GianPDev's Knowledge Base

    Ffmpeg

    Creating transparent webm video from TRANSPARENT png image sequence (Can be used for OBS Transition Stingers)

    ffmpeg -framerate 60 -f image2 -i %04d.png -c:v libvpx-vp9 -pix_fmt yuva420p output_name.webm

    Check if video is actually transparent

    1. Go to chrome/chromium based browser
    2. Drag video to browser window
    3. Change HTML background by adding this in <body>:
    style="background-color:#FF0000;"

    Should look like:

    <body style="background-color:#FF0000;">

    Transparent WebM Test.gif
    Transparent WebM Test.mp4

    Make Twitter Video's Audio work (usually breaks when using avidemuxe or merging video and audio using ffmpeg)

    ffmpeg -i input.mp4 -c:v libx264 -crf 22 -c:a aac -b:a 128k output.mp4