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Creative Commons Legal Code
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CC0 1.0 Universal
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CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE
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LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN
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ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS
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INFORMATION ON AN "AS-IS" BASIS. CREATIVE COMMONS MAKES NO WARRANTIES
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REGARDING THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS
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PROVIDED HEREUNDER, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM
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THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED
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HEREUNDER.
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Statement of Purpose
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The laws of most jurisdictions throughout the world automatically confer
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exclusive Copyright and Related Rights (defined below) upon the creator
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and subsequent owner(s) (each and all, an "owner") of an original work of
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of later claims of infringement build upon, modify, incorporate in other
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works, reuse and redistribute as freely as possible in any form whatsoever
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For these and/or other purposes and motivations, and without any
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elects to apply CC0 to the Work and publicly distribute the Work under its
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1. Copyright and Related Rights. A Work made available under CC0 may be
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protected by copyright and related or neighboring rights ("Copyright and
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Related Rights"). Copyright and Related Rights include, but are not
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i. the right to reproduce, adapt, distribute, perform, display,
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vi. database rights (such as those arising under Directive 96/9/EC of the
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European Parliament and of the Council of 11 March 1996 on the legal
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protection of databases, and under any national implementation
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thereof, including any amended or successor version of such
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directive); and
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vii. other similar, equivalent or corresponding rights throughout the
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2. Waiver. To the greatest extent permitted by, but not in contravention
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of, applicable law, Affirmer hereby overtly, fully, permanently,
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irrevocably and unconditionally waives, abandons, and surrenders all of
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Further, Affirmer disclaims responsibility for obtaining any necessary
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d. Affirmer understands and acknowledges that Creative Commons is not a
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party to this document and has no duty or obligation with respect to
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this CC0 or use of the Work.
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# video-convert
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Bash script to convert a video to mp4 and webm
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This script takes a list of inputs with filenames like "filename-1080p.mp4" and uses ffmpeg to convert them to the following formats (as applicable):
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- 1080p mp4
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- 1080p webm
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- 720p mp4
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- 720p webm
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- 480p mp4
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- 480p webm
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- 360p mp4
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- 360p webm
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It maintains good quality for the resulting videos. Converting to webm will generally take a very long time.
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## Usage
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`video-convert FILE [FILE...]`
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The file names MUST end in -<height>p.<mp4|webm> as this is how this script determines the source resolution and container type.
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This script converts to two formats:
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- mp4 (h264/aac), which is non-free but widely supported
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- webm (vp9/opus), which is free but less widely supported
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It only converts to the same or lower height than the source. If you run `video-convert myvideo-720p.mp4`, for example, it will create the following files:
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- myvideo-720p.webm
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- myvideo-480p.mp4
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- myvideo-480p.webm
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- myvideo-360p.mp4
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- myvideo-360p.webm
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## License
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public domain or CC0
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@ -0,0 +1,52 @@
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# convert_to_mp4 filename-1080p.mp4 720 1280
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convert_to_mp4() {
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infile="$1"
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height="$2"
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width="$3"
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outfile="${infile%-*}-${height}p.mp4"
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ffmpeg -i "$infile" -vf scale=$width:$height -preset slow -crf 18 "$outfile"
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}
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# convert_to_webm filename-1080p.mp4 720 1280
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convert_to_webm() {
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infile="$1"
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height="$2"
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width="$3"
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outfile="${infile%-*}-${height}p.webm"
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ffmpeg -i "$infile" -vf scale=$width:$height -b:v 0 -crf 30 -pass 1 -an -f webm -y /dev/null
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ffmpeg -i "$infile" -vf scale=$width:$height -b:v 0 -crf 30 -pass 2 "$outfile"
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}
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# do for each argument
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while(($#));do
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# filename-1080p.mp4
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filename="$1"
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# mp4
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ext="${filename##*.}"
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# 1080
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res="${filename##*-}"
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res="${res%p.*}"
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# filename
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name="${filename%-*}"
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for height in 1080 720 480 360;do
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case $height in
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1080) width=1920 ;;
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720) width=1280 ;;
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480) width=854 ;;
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360) width=640 ;;
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esac
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if [[ $res -ge $height ]];then
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if [ ! -e "$name-${height}p.mp4" ];then
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convert_to_mp4 "$filename" $height $width
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fi
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if [ ! -e "$name-${height}p.webm" ];then
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convert_to_webm "$filename" $height $width
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fi
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fi
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done
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shift
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done
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