WEBM to MP4 converter

convert_webm_to_mp4.sh

#!/bin/bash

# Quick and dirty WEBM to MP4 converter
# by Grzegorz Błaszczyk <[email protected]> 2017
# License: MIT http://rem.mit-license.org/

FFMPEG=`which ffmpeg`
LAME=`which lame`
RM=`which rm`

EXECS=( "FFMPEG" "LAME" "RM" );

for exec in "${EXECS[@]}"; do
  if [ "x${!exec}" == "x" ]; then
    echo "Error: Executable $exec is not installed!"
    exit 1;
  fi
done

if [ "x$1" == "x" ]; then
  echo "Syntax $0 [some WEBM file]"
  exit 1
fi

INPUT_FILE=$1
FRAMES="30"

if [ -e "${INPUT_FILE}" ]; then
  FILENAME="${INPUT_FILE%.*}"
  OUTPUT_FILE="${FILENAME}.mp4"

  echo "Output file will be: ${OUTPUT_FILE}"

  ${FFMPEG} -fflags +genpts -i "${INPUT_FILE}" -r ${FRAMES} ${OUTPUT_FILE}
  #$MPLAYER -vc dummy -vo null -ao pcm:file=${MP4_FILE}.wav ${MP4_FILE}
  #$RM -v "${WEBM_FILE}"
else
  echo "Input file ${INPUT_FILE} does not exist :("
fi