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Convert video to a Twitter-friendly format

Twitter does not support some video encodings

Simple, but with minimum modification:

ffmpeg -i "$INPUT_FILE" -pix_fmt yuv420p -vcodec libx264 "$OUTPUT_FILE"

Complex, but resizes the video and may better support odd encodings:

ffmpeg -i "$INPUT_FILE" \
  -pix_fmt yuv420p -vcodec libx264 \
  -vf scale=640:-1 -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" \
  -acodec aac -vb 1024k \
  -minrate 1024k -maxrate 1024k -bufsize 1024k \
  -ar 44100 -ac 2 -strict experimental -r 30 \

Use your own input

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