告别付费软件！FFmpeg+批量脚本：自媒体人的免费剪辑神器

# 使用winget快速安装（Windows 10/11）
winget install Gyan.FFmpeg

# 或者下载绿色版，解压即用
# 访问 ffmpeg.org 下载最新版

ffmpeg -version

@echo off
chcp 65001 >nul
echo 开始批量压缩视频...
for %%i in (*.mp4) do (
    echo 正在处理：%%i
    ffmpeg -i "%%i" -crf 23 -preset medium "compressed_%%i"
)
echo 所有视频压缩完成！
pause

@echo off
chcp 65001 >nul
set LOGO=watermark.png
for %%i in (*.mp4) do (
    ffmpeg -i "%%i" -i "%LOGO%" -filter_complex "overlay=W-w-10:10" "watermarked_%%i"
)
echo 水印添加完成！
pause

@echo off
chcp 65001 >nul
for %%i in (*.mp4) do (
    ffmpeg -i "%%i" -vf "scale=1080:1920:force_original_aspect_ratio=decrease:flags=lanczos,pad=1080:1920:(ow-iw)/2:(oh-ih)/2:black" -c:a copy "vertical_%%i"
)
echo 横屏转竖屏完成！
pause

@echo off
chcp 65001 >nul
for %%i in (*.mp4) do (
    ffmpeg -i "%%i" -q:a 0 -map a "%%~ni.mp3"
)
echo 音频提取完成！
pause

@echo off
chcp 65001 >nul
set PROJECT_NAME=我的视频项目
set OUTPUT_DIR=输出结果

if not exist "%OUTPUT_DIR%" mkdir "%OUTPUT_DIR%"

for %%i in (*.mp4 *.mov *.avi) do (
    echo 正在处理: %%i

    rem 压缩视频
    ffmpeg -i "%%i" -crf 23 -preset medium "%OUTPUT_DIR%\compressed_%%i"

    rem 生成缩略图
    ffmpeg -i "%%i" -ss 00:00:05 -vframes 1 "%OUTPUT_DIR%\%%~ni_cover.jpg"

    rem 生成预览GIF
    ffmpeg -i "%%i" -t 5 -vf "fps=10,scale=320:-1" "%OUTPUT_DIR%\%%~ni_preview.gif"
)

echo 项目处理完成！文件保存在 %OUTPUT_DIR% 文件夹
pause

@echo off
chcp 65001 >nul
setlocal enabledelayedexpansion
set OUTPUT_DIR=optimized_videos

if not exist "%OUTPUT_DIR%" mkdir "%OUTPUT_DIR%"

for %%i in (*.mp4) do (
    echo 智能优化: %%i

    rem 获取视频时长（秒）
    for /f "delims=" %%t in ('ffprobe -v error -show_entries format^=duration -of default^=noprint_wrappers=1:nokey=1 "%%i"') do (
        set duration=%%t
    )

    rem 使用延迟扩展比较时长（注意：duration 可能包含小数）
    rem 将 duration 的整数部分提取用于比较
    for /f "delims=." %%d in ("!duration!") do set dur_int=%%d

    if defined dur_int (
        if !dur_int! gtr 300 (
            rem 长视频：较强压缩
            ffmpeg -i "%%i" -crf 25 -preset medium -movflags +faststart "%OUTPUT_DIR%\%%i"
        ) else (
            rem 短视频：高质量压缩
            ffmpeg -i "%%i" -crf 22 -preset slow -movflags +faststart "%OUTPUT_DIR%\%%i"
        )
    ) else (
        rem 未获取到时长，默认使用短视频策略
        ffmpeg -i "%%i" -crf 22 -preset slow -movflags +faststart "%OUTPUT_DIR%\%%i"
    )
)

endlocal
echo 智能优化完成！
pause

@echo off
chcp 65001 >nul
set PLATFORM=抖音
set MAX_SIZE=50M

for %%i in (*.mp4) do (
    echo 为%PLATFORM%优化: %%i

    ffmpeg -i "%%i" ^
        -vf "scale=1080:1920:force_original_aspect_ratio=decrease:flags=lanczos,pad=1080:1920:(ow-iw)/2:(oh-ih)/2:black,drawtext=text='%PLATFORM%':x=20:y=20:fontsize=36:fontcolor=white:shadowcolor=black:shadowx=2:shadowy=2" ^
        -c:a aac -b:a 128k ^
        -movflags +faststart ^
        "douyin_%%i"
)

echo %PLATFORM%视频优化完成！
pause

@echo off
chcp 65001 >nul
for %%i in (*.mp4) do (
    rem 微信视频号推荐参数
    ffmpeg -i "%%i" ^
        -vf "scale=1080:1920" -c:v libx264 -profile:v high -level 4.1 ^
        -crf 21 -preset medium -maxrate 2000k -bufsize 4000k ^
        -c:a aac -b:a 128k -ar 44100 ^
        -movflags +faststart ^
        "wechat_%%i"
)
pause

@echo off
chcp 65001 >nul
set FOLDER=%date:~0,4%%date:~5,2%%date:~8,2%
if not exist "%FOLDER%" mkdir "%FOLDER%"
move processed_*.mp4 "%FOLDER%"

@echo off
chcp 65001 >nul
echo ===============================
echo     批量视频处理工具
echo ===============================
echo.

@echo off
chcp 65001 >nul
for %%i in (*.mp4) do (
    ffmpeg -i "%%i" -crf 23 "processed_%%i" || (
        echo 错误：处理文件 %%i 时出现问题
        echo %%i >> error_log.txt
    )
)

@echo off
chcp 65001 >nul
echo 监控开始，自动处理新文件...
:loop
for %%i in (待处理\*.mp4) do (
    if exist "%%i" (
        echo 发现新文件: %%~nxi
        ffmpeg -i "%%i" -crf 23 "已完成\%%~nxi"
        del "%%i"
    )
)
timeout /t 10 >nul
goto loop

for %%i in (*.mp4) do (
    ffmpeg -i "%%i" "output_%%i" || echo 跳过文件: %%i
)

for %%i in (*.mp4) do ffmpeg -i "%%i" "output_%%i"