179 lines
4.5 KiB
Bash
Executable File
179 lines
4.5 KiB
Bash
Executable File
#!/bin/sh
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#------------------------------------------------------------------------------
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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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# \\/ M anipulation |
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#------------------------------------------------------------------------------
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# License
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# This file is part of OpenFOAM.
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#
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# OpenFOAM is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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#
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# Script
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# foamCreateVideo
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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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#
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#------------------------------------------------------------------------------
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usage() {
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cat <<USAGE
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Usage: ${0##*/} [OPTIONS] ...
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options:
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-dir | -d <dir> directory containing png images (default local dir)
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-fps | -f <fps> frames per second (default = 10)
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-help | -h print the usage
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-image | -i <name> name of image sequence (default = image)
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-out | -o <name> name of output video file (default = video)
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-start | -s <frame> specify the start frame number for ffmpeg
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-webm | -w WebM output video file format
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Creates a video file from a sequence of PNG images
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- A sequence named "image" will expect files image.0000.png, image.0001.png, etc
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- The default output video compression format is MPEG-4, with WebM as an option
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- The default file name, using MPEG-4 compression, is video.mp4
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- By default the video codec is high resolution
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Requires mencoder or ffmpeg for MPEG-4 output, ffmpeg for WebM output
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USAGE
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}
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error() {
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exec 1>&2
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while [ "$#" -ge 1 ]; do echo "$1"; shift; done
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usage
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exit 1
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}
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# Default settings
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dir=.
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image=image
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video=video
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fps=10
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fmt=mp4
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start=
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while [ "$#" -gt 0 ]
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do
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case "$1" in
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-h | -help)
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usage && exit 0
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;;
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-d | -dir)
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[ "$#" -ge 2 ] || error "'$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=$2
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shift 2
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;;
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-i | -image)
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[ "$#" -ge 2 ] || error "'$1' option requires an argument"
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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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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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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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shift 2
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;;
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-w | -webm)
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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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;;
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*)
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break
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;;
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esac
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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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[ "$_start" ] && _start="-start_number $_start"
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cd "$_dir" || return 1
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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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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="$5"
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mencoder \
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"mf://$_dir/$_image.*.png" \
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-mf fps="$_fps" \
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-o "$_out.$_fmt" \
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-ovc x264
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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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! [ "$fmt" = "webm" ] && ! [ "$start" ] && isInstalled mencoder && \
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mencoderCreateVideo "$dir" "$image" "$fps" "$video" "$fmt" && \
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exit 0
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isInstalled ffmpeg && \
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ffmpegCreateVideo "$dir" "$image" "$fps" "$video" "$fmt" "$start" || \
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echo "ffmpeg not installed."
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