BPM values for WebMs in dir:

asciipepe BPM = 155.84

asciipepebg BPM = 155.84

asciipepebg2 BPM = 155.84

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Tutorials

Calculate the BPM of a WebM.

Find the duration of the video:

ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 input.webm

-v error                                  # Show only error messages.
-show_entries format=duration             # Display the duration of the file.
-of default=noprint_wrappers=1:nokey=1    # Output only the value, without extra formatting.
input.webm                                # The WebM file to analyze.

Calculate the BPM:

• BPM = 60 / Duration (in seconds)

• Multiply BPM by 2, or 4 for the WebM to play at the correct speed!

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Convert GIF to a WebM lossless quality and transparency support.

ffmpeg -i input.gif -c:v libvpx-vp9 -lossless 1 -pix_fmt yuva420p output.webm

-i input.gif                              # Input GIF file.
-c:v libvpx-vp9                           # Sets the video codec to VP9.
-lossless 1                               # Lossless mode to preserve colour and quality.
-pix_fmt yuva420p                         # Format supports transparency.
-output.webm                              # The name of the output file.

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Remove sound from WebM

ffmpeg -i input.webm -c:v copy -an output.webm

-i input.webm                             # Input WebM file.
-c:v copy                                 # Copies the video stream, without re-encoding it.
-an                                       # Removes all audio streams from the output file.
-output.webm                              # The name of the output file, without audio.