Bash scripts to convert MOV video to mp4 or Webm

mp4.sh

#!/bin/bash

SOURCE_PATH="$1"
DEST_PATH="$2"
SOURCE_EXTENSION=".mov"
CONSTANT_RATE_FACTOR=24

convert_mp4 () {
    ffmpeg -y -i "$1" \
        -codec:v libx264 \
        -preset slower \
        -pix_fmt yuv420p \
        -crf ${CONSTANT_RATE_FACTOR} \
        -codec:a aac \
        -movflags +faststart \
        -f mp4 \
        "$2"
}

for f in ${SOURCE_PATH}/*${SOURCE_EXTENSION}
do
	BASENAME=$(basename $f)
    FILENAME="${BASENAME%.*}"
    convert_mp4 "${SOURCE_PATH}/${FILENAME}${SOURCE_EXTENSION}" "${DEST_PATH}/${FILENAME}.mp4"
done

webm.sh

#!/bin/bash

SOURCE_PATH="$1"
DEST_PATH="$2"
SOURCE_EXTENSION=".mov"
CONSTANT_RATE_FACTOR=24

convert_webm () {
    ffmpeg -y -i "$1" \
        -codec:v libvpx-vp9 \
        -preset slower \
        -pix_fmt yuv420p \
        -crf ${CONSTANT_RATE_FACTOR} \
        -codec:a libopus \
        "$2"
}

for f in ${SOURCE_PATH}/*${SOURCE_EXTENSION}
do
	BASENAME=$(basename $f)
    FILENAME="${BASENAME%.*}"
    convert_webm "${SOURCE_PATH}/${FILENAME}${SOURCE_EXTENSION}" "${DEST_PATH}/${FILENAME}.webm"
done