ffmpeg video resolution filter 2024-03-18

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Mar 18th, 2024

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lsvideoheight_core() {
# $1 = height
# $2 = current file name
mediainfo_result=$(mediainfo "$2" |egrep "(Complete name|Height.*: $1)");
mediainfo_height=$(echo "$mediainfo_result" | tail -n 1 );
if ( [[ $mediainfo_height == "Height"*": $1 pixels" ]] ); # if video height matches; no quotation marks to remove excessive spaces
then { echo "$mediainfo_result" | head -n 1 | grep "$2" |sed -r "s/^.*: //g"; }; fi # remove everything except the file path
}
lsvideoheight() {
# Iterate though multiple files.
# Two separate loops because arguments containing file names with spaces can not be passed through a variable containing either all files in the current directory or all specified files, because they would be stringified into one argument.
argument_count=0; # for loop skips over first argument with video height
if [ ! "$2" ]; then # no file specified = list all in current directory
for current_item in "" *; # blank dummy string so files start at second argument; not using "${@:2}" for sh compatibility
do { if [ $argument_count -ge 1 ] && [ -f "$current_item" ]; then lsvideoheight_core "$1" "$current_item"; fi; # files only, exclude directories
argument_count=$(( argument_count + 1 ));
}
done
else # specified file names and directories
for current_item in "$@";
do {
if (test $argument_count -ge 1 ); then
# directory handler: if current item is a directory
if [ -d "$current_item" ]; then
for subfile in "$current_item"/*; do lsvideoheight_core "$1" "$subfile"; done
else lsvideoheight_core "$1" "$current_item";
fi;
fi;
argument_count=$(( argument_count + 1 ));
}
done
fi
}
ls4320p() { lsvideoheight "2 160" "$@"; } # 8K
ls2160p() { lsvideoheight "2 160" "$@"; } # 4K
ls1440p() { lsvideoheight "1 440" "$@"; } # QHD / WQHD
ls1080p() { lsvideoheight "1 080" "$@"; } # Full HD
ls720p() { lsvideoheight "720" "$@"; } # HD
ls480p() { lsvideoheight "480" "$@"; } # HQ ("high quality") / SD ("standard definition")
# aliases
alias ls8K=ls4320p;
alias ls4K=ls2160p;
alias lsUHD=ls2160p;
alias lsQHD=ls1440p;
alias lsFHD=ls1080p;
alias lsHD=ls720p;

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