a few of my video editing scripts

convert-color-profile.sh

#!/usr/bin/env bash

COLOR_PROFILE="${HOME}/.colors/displays/ProPhoto.icm"
INPUT_DIR=$(pwd)

OUTPUT_DIR="o"

cd "${INPUT_DIR}" || exit 1
mkdir -pv "${OUTPUT_DIR}"

for i in $(seq 1 145); do

  INPUT_FILE="f${i}.png"
  INPUT_PATH="${INPUT_DIR}/${INPUT_FILE}"
  OUTPUT_FILE="f${i}.png"
  OUTPUT_PATH=${OUTPUT_DIR}/${OUTPUT_FILE}
  # echo "${INPUT_PATH} ${OUTPUT_PATH}"
  # convert f${i}.png -crop 600x324+209x0 o/f${i}.png
  convert -verbose "${INPUT_PATH}" -profile "${COLOR_PROFILE}" "${OUTPUT_PATH}"
done

flac_to_mp3.sh

#!/bin/bash

WAV='.wav'
MP3='.mp3'
AUDIO_BITRATE=224

flac -d *.flac
for oldfilename in *$WAV
do
    newfilename="${oldfilename/%${WAV}/${MP3}}"
    lame -b "${AUDIO_BITRATE}" "$oldfilename" "$newfilename" && rm "$oldfilename"
done

gif2webm.sh

#!/bin/sh
#
# anim2webm.sh: Animation sequenced media, i.e.: GIF, mp4, etc.
# to WebM conversion
#
# See also,
#   https://trac.ffmpeg.org/wiki/Encode/VP8
#
#   References
# 1. https://gist.github.com/ndarville/10010916

APP_FILE=$0
INPUT_FILE=$1
OUTPUT_FILE=$2

usage_info()
{
  local SCRIPT_NAME
  SCRIPT_NAME=$(basename ${APP_FILE})

  echo "Usage:\t${SCRIPT_NAME} <input> <output>"
  # echo
  echo "  i.e.:\t${SCRIPT_NAME} input.gif output.webm"
  exit
}

VIDEO_CODEC=libvpx
# Video quality quantifier should be between 4..63. The lower values
# equate to better video quality.
VIDEO_QUALITY=12
# Video quality cap; maximum bit-rate
VIDEO_BITRATE=2000K
AUDIO_CODEC=libvorbis

if [ -z "${INPUT_FILE}" ] || [ -z "${OUTPUT_FILE}" ]; then
  usage_info
else
  ffmpeg -threads 9 -i "${INPUT_FILE}" -c:v "${VIDEO_CODEC}" \
    -crf 12 -b:v "${VIDEO_BITRATE}" -c:a "${AUDIO_CODEC}" "${OUTPUT_FILE}"
  # ffmpeg -threads 9 -i "${INPUT_FILE}" -c:v "${VIDEO_CODEC}" \
  #   -b:v "${VIDEO_BITRATE}" -c:a "${AUDIO_CODEC}" "${OUTPUT_FILE}"

  # ffmpeg -i your_video.mkv -ss 00:00:10.000 -to 00:00:20.000 -c:v libvpx -crf 4 -b:v 1500K -vf scale=640:-1 -an output.webm
fi

misc.md

# See also: convert-color-profile.sh for proper method of sorting file input and output
convert *.png -crop 600x324+209x0 o/*.png

# Append metadata to WebM video
#
#   1. https://wiki.multimedia.cx/index.php?title=FFmpeg_Metadata#QuickTime.2FMOV.2FMP4.2FM4A.2Fet_al.
#   2. http://www.webmproject.org/docs/container/
ffmpeg -y -i ch1.webm -metadata title="Awesome Title" -metadata Tags="gulp!" -metadata Date=2016-10 -metadata WritingApp="ffmpeg 3.1.3" -c:v copy -c:a copy ch1t.webm

# Previews & Poster frames
ffmpeg -ss 00:01.275 -i clip000.mp4 -t 5.35 -vf scale=320:-1 clip000t.gif

# deinterlace old Sony DV -- field order **must** start at the bottom!
ffmpeg -y -i ${INPUT_DIR}/${VIDEO_INPUT} -b:v 8M -vf yadif=parity=bff ${OUTPUT}

to_dvd.sh

#!/usr/bin/env bash
# to_dvd.sh:jeff

# SOURCE: http://ffmpeg.gusari.org/viewtopic.php?f=25&t=1235

function usage_info() {
  local SCRIPT_NAME
  SCRIPT_NAME=$0
  echo "./${SCRIPT_NAME}: <dvd_input>"
}

OUTPUT_FILE=out.mpg
# TODO(jeff): escape input with printf
ffmpeg -i "${1}" -filter:v "scale='if(gt(a,720/480),720,-1)':'if(gt(a,720/480),-1,480)',pad=w=720:h=480:x=(ow-iw)/2:y=(oh-ih)/2" -target ntsc-dvd ${OUTPUT_FILE}

# Environment setup for dvdauthor
export VIDEO_FORMAT=NTSC

if [[ -z $1 ]]; then
  usage_info
  exit 0
fi

mkdir -p dvd

DVD_ROOT=dvd
dvdauthor --title -o ${DVD_ROOT} -f ${OUTPUT_FILE}

# Setup the table of contents
dvdauthor -T -o ${DVD_ROOT}

DVD_ROOT=$(pwd)
# DVD_NAME="THE_BIG_LEBOWSKI"
DVD_NAME=$1
ISO_IMAGE=dvd5_${DVD_NAME}.iso
hdiutil makehybrid -iso -udf -udf-version 1.02 -joliet \
  -udf-volume-name "${DVD_NAME}" -o "${ISO_IMAGE}" "${DVD_ROOT}"

# dvdxchap /dev/dvd > ${OUTPUT_FILE}_chapters.txt
# dvdxchap /Volumes/DVD/VIDEO_TS > ${OUTPUT_FILE}_chapters.txt
dvdxchap dvd5_${DVD_NAME}.iso > ${DVD_NAME}_chapters.txt