foamCreateVideo: added options to pause the video at beginning and/or end,
updated video options for ffmpeg and enabled the -start option with mencoder
This commit is contained in:
Chris Greenshields
@ -3,7 +3,7 @@
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# ========= |
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# \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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# \\ / O peration | Website: https://openfoam.org
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# \\ / A nd | Copyright (C) 2015-2020 OpenFOAM Foundation
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# \\ / A nd | Copyright (C) 2015-2022 OpenFOAM Foundation
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# \\/ M anipulation |
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#------------------------------------------------------------------------------
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# License
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@ -27,7 +27,7 @@
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#
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# Description
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# Creates a video file from PNG images
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# - requires mencoder or ffmpeg
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# - requires ffmpeg or mencoder installed
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#
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#------------------------------------------------------------------------------
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@ -36,12 +36,14 @@ usage() {
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Usage: ${0##*/} [OPTIONS] ...
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options:
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-begin-pause | -b <time> pause at beginning of the video by <time> seconds
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-dir | -d <dir> directory containing png images (default local dir)
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-end-pause | -e <time> pause at the end of the video by <time> seconds
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-fps | -f <fps> frames per second (default = 10)
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-help | -h print the usage
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-image | -i <name> name of image sequence (default = image)
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-out | -o <name> name of output video file (default = video)
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-start | -s <frame> specify the start frame number for ffmpeg
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-start | -s <frame> specify the start image
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-webm | -w WebM output video file format
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Creates a video file from a sequence of PNG images
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@ -50,67 +52,123 @@ Creates a video file from a sequence of PNG images
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- The default file name, using MPEG-4 compression, is video.mp4
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- By default the video codec is high resolution
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Requires mencoder or ffmpeg for MPEG-4 output, ffmpeg for WebM output
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Requires 'ffmpeg' or 'mencoder' to be installed. 'ffmpeg' is preferred since
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'mencoder' does not support the '-begin-pause', '-end-pause' & '-webm' options.
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USAGE
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}
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error() {
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exec 1>&2
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while [ "$#" -ge 1 ]; do echo "$1"; shift; done
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while [ "$#" -ge 1 ]
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do
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[ "$#" -eq 1 ] && printf "%s\n" "$1" || printf "%s" "$1"
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shift
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done
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usage
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exit 1
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}
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isInstalled () {
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command -v "$1" >/dev/null 2>&1
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}
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isInteger () {
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[ "$1" -eq "$1" ] 2> /dev/null
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}
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isNumber () {
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printf "%f" "$1" > /dev/null 2>&1 || isInteger "$1"
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}
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# Default settings
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dir=.
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image=image
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video=video
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fps=10
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fmt=mp4
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start=
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start=1
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begin_pause=
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end_pause=
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image_list="$(mktemp /tmp/temp.XXXXXX)" || exit
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echo "Creating temporary file $image_list"
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trap 'rm -f "$image_list"' EXIT
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# Check whether ffmpeg or mencoder are installed to create video
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isInstalled ffmpeg && app="ffmpeg"
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! [ "$app" ] && isInstalled mencoder && app="mencoder"
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[ "$app" ] || \
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usage "Neither ffmpeg nor mencoder are installed." \
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"Install one of them to use foamCreateVideo."
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echo "Running foamCreateVideo with $app"
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while [ "$#" -gt 0 ]
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do
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case "$1" in
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-h | -help)
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usage && exit 0
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-b | -begin-pause)
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[ "$app" = "mencoder" ] && \
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error "The '$1' option is invalid when using mencoder to create " \
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"the video. Either do not use the option, or install ffmpeg."
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[ "$#" -ge 2 ] || error "The '$1' option requires an argument."
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begin_pause=$2
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isNumber "$begin_pause" || \
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error "The '$1' option requires a numeric argument."
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shift 2
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;;
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-d | -dir)
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[ "$#" -ge 2 ] || error "'$1' option requires an argument"
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[ "$#" -ge 2 ] || error "The '$1' option requires an argument."
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dir=$2
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shift 2
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;;
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-f | -fps)
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[ "$#" -ge 2 ] || error "'$1' option requires an argument"
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fps=$2
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-e | -end-pause)
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[ "$app" = "mencoder" ] && \
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error "The '$1' option is invalid when using mencoder to create " \
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"the video. Either do not use the option, or install ffmpeg."
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[ "$#" -ge 2 ] || error "The '$1' option requires an argument."
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end_pause=$2
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isNumber "$begin_pause" || \
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error "The '$1' option requires a numeric argument."
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shift 2
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;;
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-f | -fps)
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[ "$#" -ge 2 ] || error "The '$1' option requires an argument."
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fps=$2
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isInteger "$fps" || \
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error "The '$1' option requires an integer argument."
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shift 2
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;;
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-h | -help)
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usage && exit 0
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;;
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-i | -image)
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[ "$#" -ge 2 ] || error "'$1' option requires an argument"
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[ "$#" -ge 2 ] || error "The '$1' option requires an argument."
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image=$2
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shift 2
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;;
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-o | -out)
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[ "$#" -ge 2 ] || error "'$1' option requires an argument"
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[ "$#" -ge 2 ] || error "The '$1' option requires an argument."
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video=$2
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shift 2
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;;
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-s | -start)
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[ "$#" -ge 2 ] || error "'$1' option requires an argument"
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[ "$#" -ge 2 ] || error "The '$1' option requires an argument."
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start=$2
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echo "Selected start frame, requires ffmpeg..."
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[ "$start" -eq "$start" ] 2> /dev/null || \
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error "'$1' option requires an integer argument"
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isInteger "$start" || \
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error "The '$1' option requires an integer argument."
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shift 2
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;;
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-w | -webm)
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[ "$app" = "mencoder" ] && \
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error "The '$1' option is invalid when using mencoder to create " \
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"the video. Either do not use the option, or install ffmpeg."
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fmt=webm
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echo "Selected $fmt format, requires ffmpeg..."
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shift
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;;
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-*)
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error "invalid option '$1'"
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error "invalid option '$1'."
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;;
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*)
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break
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@ -119,38 +177,47 @@ do
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done
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ffmpegCreateVideo () {
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_dir="$1"
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_image="$2"
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_fps="$3"
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_out="$4"
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_fmt="$5"
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_start="$6"
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_pwd="$(pwd)"
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_image_list="$1"
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_out="$2"
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_fmt="$3"
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[ "$_start" ] && _start="-start_number $_start"
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_video_output="\
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-c:v libx264 \
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-b:v 5M \
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-r:v 40 \
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-vf format=yuv420p,pad=ceil(iw/2)*2:ceil(ih/2)*2 \
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-flags +cgop \
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-threads 2 \
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-crf 18 \
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-bf 2 \
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-preset medium \
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-profile:v baseline \
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-shortest \
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-movflags faststart"
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cd "$_dir" || return 1
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[ "$_fmt" = webm ] && \
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_video_output="\
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-vf format=yuv420p,pad=ceil(iw/2)*2:ceil(ih/2)*2"
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#shellcheck disable=SC2086
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ffmpeg \
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-framerate "$_fps" \
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$_start \
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-i "$_image".%04d.png \
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-vf "format=yuv420p,pad=ceil(iw/2)*2:ceil(ih/2)*2" \
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"$_pwd/$_out.$_fmt"
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-f concat \
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-safe 0 \
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-i "$_image_list" \
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$_video_output \
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"$_out.$_fmt"
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return 0
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}
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mencoderCreateVideo () {
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_dir="$1"
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_image="$2"
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_fps="$3"
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_out="$4"
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_fmt="$5"
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_image_list="$1"
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_fps="$2"
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_out="$3"
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_fmt="$4"
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mencoder \
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"mf://$_dir/$_image.*.png" \
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"mf://@$image_list" \
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-mf fps="$_fps" \
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-o "$_out.$_fmt" \
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-ovc x264
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@ -158,21 +225,42 @@ mencoderCreateVideo () {
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return 0
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}
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isInstalled () {
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command -v "$1" >/dev/null 2>&1
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}
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#
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# MAIN
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#
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[ -f "$(find "$dir" -name "$image.*.png" | sort | head -1)" ] || \
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error "Cannot find first file in image sequence"
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images="$(find "$dir" -maxdepth 1 -name "$image.*.png" -type f -print0 | \
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xargs -0 realpath | sort | xargs -n 1)"
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first_image="$(echo "$images" | sed "$start!d")"
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last_image="$(echo "$images" | tail -1)"
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! [ "$fmt" = "webm" ] && ! [ "$start" ] && isInstalled mencoder && \
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mencoderCreateVideo "$dir" "$image" "$fps" "$video" "$fmt" && \
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exit 0
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[ -f "$first_image" ] || error "Cannot find first file in image sequence."
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isInstalled ffmpeg && \
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ffmpegCreateVideo "$dir" "$image" "$fps" "$video" "$fmt" "$start" || \
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echo "ffmpeg not installed."
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delay="$(awk -v f="$fps" 'BEGIN {print 1/f}')"
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write=""
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echo "$images" | while read -r line
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do
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[ "$line" = "$first_image" ] && write=on
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[ "$write" = on ] || continue
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[ "$app" = mencoder ] && echo "$line" >> "$image_list" && continue
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# ffmpeg settings
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echo "file $line" >> "$image_list"
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[ "$line" = "$first_image" ] && \
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[ "$begin_pause" ] && \
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echo "duration $begin_pause" >> "$image_list" && continue
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[ "$line" = "$last_image" ] && \
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[ "$end_pause" ] && \
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echo "duration $end_pause" >> "$image_list" && \
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echo "file $line" >> "$image_list" && continue
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echo "duration $delay" >> "$image_list"
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done
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[ "$app" = ffmpeg ] && \
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ffmpegCreateVideo "$image_list" "$video" "$fmt" && exit 0
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mencoderCreateVideo "$image_list" "$fps" "$video" "$fmt"
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