把脚本放到以下路径，不要有扩展名：  

~/.local/share/nautilus/scripts/Conver2AVIF

#!/bin/bash

# ============================================================
#   Nautilus 右键传入的文件/目录
# ============================================================
SELECTED_ITEMS=("$@")

FORMATS="jpg,jpeg,png,webp,gif,tiff,bmp"
QUALITY=70
PARALLEL=1
MAX_SIZE_MB=200
REPORT_FILE="avif_report.md"
RETRY_FILE="avif_retry.list"

# ============================================================
#   自动安装依赖
# ============================================================
install_dependencies() {
    if command -v magick >/dev/null 2>&1; then
        CONVERTER="magick"
        return
    fi

    if command -v avifenc >/dev/null 2>&1; then
        CONVERTER="avifenc"
        return
    fi

    if [[ -f /etc/debian_version ]]; then
        sudo apt update && sudo apt install -y imagemagick
    else
        zenity --error --text="请手动安装 ImageMagick 或 avifenc"
        exit 1
    fi

    if command -v magick >/dev/null 2>&1; then
        CONVERTER="magick"
    else
        zenity --error --text="ImageMagick 安装失败"
        exit 1
    fi
}

install_dependencies

# ============================================================
#   收集所有文件（递归所有子目录 + 支持直接选图片）
# ============================================================
FILES=()
IFS=',' read -ra EXT_LIST  "$REPORT_FILE"
echo "| 原文件 | 原大小 | AVIF大小 | 压缩率 | 状态 |" >> "$REPORT_FILE"
echo "|--------|--------|----------|--------|--------|" >> "$REPORT_FILE"

# ============================================================
#   转换函数（关键：每张图用自己的目录建 avif/）
# ============================================================
convert_one() {
    local img="$1"
    local dir="$(dirname "$img")"
    local filename="$(basename "$img")"

    # 每个目录单独一个 avif 子目录
    local output_dir="$dir/avif"
    mkdir -p "$output_dir"

    local output="$output_dir/${filename%.*}.avif"

    if [[ -f "$output" ]]; then
        echo "跳过已存在: $output"
        return
    fi

    local size_mb
    size_mb=$(du -m "$img" | cut -f1)
    if (( size_mb > MAX_SIZE_MB )); then
        echo "跳过过大文件 ($size_mb MB): $img"
        return
    fi

    local before_size
    before_size=$(du -h "$img" | cut -f1)

    if [[ "$CONVERTER" == "magick" ]]; then
        magick "$img" -quality "$QUALITY" "$output"
    else
        avifenc --min 0 --max "$QUALITY" "$img" "$output"
    fi

    if [[ $? -ne 0 ]]; then
        echo "转换失败: $img"
        echo "$img" >> "$RETRY_FILE"
        echo "| $filename | $before_size | - | - | ❌失败 |" >> "$REPORT_FILE"
        return
    fi

    local after_size
    after_size=$(du -h "$output" | cut -f1)
    local before_k
    before_k=$(du -k "$img" | cut -f1)
    local after_k
    after_k=$(du -k "$output" | cut -f1)
    local ratio=$(( 100 * after_k / before_k ))

    echo "| $filename | $before_size | $after_size | ${ratio}% | ✅成功 |" >> "$REPORT_FILE"
}

export -f convert_one
export CONVERTER QUALITY MAX_SIZE_MB REPORT_FILE RETRY_FILE

# ============================================================
#   并行执行
# ============================================================
printf "%s\n" "${FILES[@]}" | xargs -I {} -P "$PARALLEL" bash -c 'convert_one "$@"' _ {}

zenity --info --text="AVIF 转换完成，共处理 $TOTAL 个文件。各目录已生成各自的 avif/ 子目录。"