Concat original video and reversed video

concat_original_video_and_reversed_video.sh

origin_reversed() {
    local tmp_dir=/tmp/concat_original_video_and_reversed_video
    local base_name=$(basename "$1")
    local mts_path="$tmp_dir/${base_name}.mts"
    local reversed_path="$tmp_dir/${base_name}-reversed.mts"
    local concat_path="$tmp_dir/${base_name}-concat.mts"
    local list_path="$tmp_dir/${base_name}-list"
    mkdir -p "$tmp_dir"
    ffmpeg -i "$1" -q 0 "$mts_path"
    ffmpeg -i "$mts_path" -vf reverse -af areverse "$reversed_path"
    echo "file $mts_path\nfile $reversed_path" > "$list_path"
    ffmpeg -f concat -safe 0 -i "$list_path" -c copy "$concat_path"
    ffmpeg -i "$concat_path" -q 0 "$2"
    \rm -r "$tmp_dir"
}