.dotfiles/zsh/ffmpeg

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#--------------------------------
# filename: /zsh/ffmpeg
#--------------------------------
# ffmpeg-recontainer
# source: https://yohanes.gultom.me/2016/05/21/bash-script-to-batch-convert-mkv-to-mp4-linux/
function ff-mp4() {
findpath=$1
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: "${findpath:="."}"
find "$findpath" \( -iname '*.mkv' -o -iname '*.flv' -o -iname '*.mov' \) | while read -r f ; do
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dir=$(dirname "$f");
file=$(basename "$f");
# ext="${filename##*.}";
name="${file%.*}";
ffmpeg -i "$f" -map 0 -c copy -movflags faststart "$dir/$name.mp4" </dev/null;
# rm -f "$f";
done
}
# ffmpeg-convert
# source: https://yohanes.gultom.me/2016/05/21/bash-script-to-batch-convert-mkv-to-mp4-linux/
function ff-ac3-to-stereo() {
findpath=$1
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: "${findpath:="."}"
find "$findpath" \( -iname '*.mkv' -o -iname '*.flv' -o -iname '*.mov' -o -iname '*.mp4' \) | while read -r f ; do
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dir=$(dirname "$f");
file=$(basename "$f");
# ext="${filename##*.}";
name="${file%.*}";
ffmpeg -i "$f" -map 0 -c:v copy -c:a libfdk_aac -b:a 192k -ac 2 -af volume=2 -movflags faststart "$dir/$name.mp4" </dev/null;
# rm -f "$f";
done
}
# ffmpeg audio-to-ac3
function ff-input-to-ac3() {
ffmpeg -i "$1" -movflags faststart -map 0 -c:v copy -c:s copy -c:a ac3 -b:a 448k "_$1"
}
# ffmpeg fix 16:9 AR
function ff-ar16-9() {
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ffmpeg -i "$1" -c copy -map 0 -bsf:v "h264_metadata=sample_aspect_ratio=4/3" -aspect 16:9 -movflags faststart "_$1"
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}
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# ffmpeg fix 5:4 AR
function ff-ar5-4() {
ffmpeg -i "$1" -c copy -map 0 -bsf:v "h264_metadata=sample_aspect_ratio=1/1" -aspect 5:4 -movflags faststart "_$1"
}
# ffmpeg fix 4:3 AR
function ff-ar4-3() {
ffmpeg -i "$1" -c copy -map 0 -bsf:v "h264_metadata=sample_aspect_ratio=1/1" -aspect 4:3 -movflags faststart "_$1"
}
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# ffmpeg fix Non-monotonous DTS
function ff-dts() {
ffmpeg -fflags +igndts -i "$1" -c copy -movflags faststart "_$1"
}
## ffmpeg wma-to-m4a
function ff-wma-m4a() {
findpath=$1
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: "${findpath:="."}"
find "$findpath" -name '*.wma' | while read -r f ; do
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dir=$(dirname "$f");
file=$(basename "$f");
# ext="${filename##*.}";
name="${file%.*}";
ffmpeg -i "$f" -map 0 -vn -b:a 160k -c:a libfdk_aac "$dir/$name.m4a" </dev/null;
# rm -f "$f";
done
}