Bash script to encode videos for CodeCasts.tv. Uses ffmpeg to encode to Theory (Ogg), WebM (vp8), and h.264 (x264). This version of the script doesn't require ffmpeg2theora or HandbrakeCLI, so less requirements all around. Need to get the WebM to create a smaller file.

encode_videos.sh

#!/bin/bash

# This shell script will process & encode a single video file, and output 3
# seperate files in the following formats: WebM, Ogg Theora, & h.264 for
# streaming via an HTML5 player.
#
# You'll need ffmpeg, libvorbis, libvpx, & x264 installed to run this
# script.  ffmpeg can be installed via Homebrew on a Mac. 

# Modifications made for resolution and quality where needed.

INPUT_FILE=$1
FILENAME=${INPUT_FILE%%.*}
VIDEO_HEIGHTS=( 480 720 1080 )
INPUT_HEIGHT=`ffprobe -v quiet -show_streams $INPUT_FILE | grep height | cut -d = -f 2`

if [ -z "$INPUT_FILE" ]; then
    echo "Usage: encode4codecasts.sh FILENAME"
    echo "You need to pass a video to process. Exiting"
    exit
fi

echo "Encoding $INPUT_FILE"
echo "$INPUT_FILE Height: $INPUT_HEIGHT"

for height in ${VIDEO_HEIGHTS[@]}
do
  # If the input video's height is the same as the height to scale to, skip,  
  # because we'll encode a "full" version after we handle the scaled videos
  if [ $height == $INPUT_HEIGHT ]; then
    continue
  fi

  # We only want to scale if the height we're scaling to is smaller than the 
  # original video's height. NEVER scale up.
  if [ $INPUT_HEIGHT -gt $height ]; then
    echo "RUNNING: ffmpeg -i $INPUT_FILE -threads 16 -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -c:v libtheora -c:a libvorbis -q:v 5 -q:a 5 -vf \"scale=-1:$height\" -y ${FILENAME}_${height}.ogv"
    ffmpeg -i $INPUT_FILE -threads 16 -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -c:v libtheora -c:a libvorbis -q:v 5 -q:a 5 -vf "scale=-1:$height" -y ${FILENAME}_${height}.ogv
    
    echo "RUNNING: ffmpeg -i $INPUT_FILE -threads 16 -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -c:v libx264 -profile:v main -vf \"scale=-trunc(oh*a/2)*2:min($height\,iw)\" -strict -2 -y ${FILENAME}_${height}.m4v"
    ffmpeg -i $INPUT_FILE -threads 16 -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -c:v libx264 -profile:v main -vf "scale=trunc\(oh*a/2\)*2:min\($height\,iw\)" -strict -2 -y ${FILENAME}_${height}.m4v
    
    echo "RUNNING: ffmpeg -i $INPUT_FILE -threads 16 -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -c:v libvpx -c:a libvorbis -quality good -vf \"scale=-1:$height\" -y ${FILENAME}_${height}.webm"
    ffmpeg -i $INPUT_FILE -threads 16 -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -c:v libvpx -c:a libvorbis -quality good -vf "scale=-1:$height" -y ${FILENAME}_${height}.webm
  fi
done

# Full Size videos. Convert but don't scale.
echo "RUNNING: ffmpeg -i $INPUT_FILE -threads 16 -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -c:v libtheora -c:a libvorbis -q:v 5 -q:a 5 -y ${FILENAME}_full.ogv"
ffmpeg -i $INPUT_FILE -threads 16 -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -c:v libtheora -c:a libvorbis -q:v 5 -q:a 5 -y ${FILENAME}_full.ogv

echo "RUNNING: ffmpeg -i $INPUT_FILE -threads 16 -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -c:v libx264 -profile:v main -strict -2 ${FILENAME}_full.m4v"
ffmpeg -i $INPUT_FILE -threads 16 -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -c:v libx264 -profile:v main -strict -2 -y ${FILENAME}_full.m4v

echo "RUNNING: ffmpeg -i $INPUT_FILE -threads 16 -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -c:v libvpx -c:a libvorbis -quality good -y ${FILENAME}_full.webm"
ffmpeg -i $INPUT_FILE -threads 16 -keyint_min 0 -g 250 -skip_threshold 0 -qmin 1 -qmax 51 -c:v libvpx -c:a libvorbis -quality good -y ${FILENAME}_full.webm

#Copying file to the codecasts-tv_xxxx.mov
echo "COPYING $INPUT_FILE codecasts-tv_$INPUT_FILE"
cp $INPUT_FILE codecasts-tv_$INPUT_FILE

echo "Done"