ffmpeg lib源错误截图缩略图

Question

我尝试创建一个视频上传网站作为一个辅助项目，当我尝试上传文件时遇到了问题。 当我尝试为从客户端发送的视频创建缩略图时，我似乎遇到了错误

router.post("/thumbnail", (req, res) => {

    let thumbsFilePath ="";
    let fileDuration ="";

    ffmpeg.ffprobe(req.body, function(){
        fileDuration = req.headers["content-length"];
    })

    ffmpeg(req.body.filePath)
        .on('filenames', function (filenames) {
            thumbsFilePath = "/uploads/thumbnails/" + filenames[0];
        })
        
        .on('end', function () {
            console.log('Screenshots taken');
            return res.json({ success: true, thumbsFilePath: thumbsFilePath, fileDuration: fileDuration})
  
        })
        .screenshots({
            count: 3,
            folder: '/uploads/thumbnails',
            size:'320x240',
            filename:'thumbnail-%b.png'
        });

});

错误来自这一行

ffmpeg(req.body.filePath)

错误：

TypeError: Cannot read properties of undefined (reading 'source')
    at FfmpegCommand.proto.takeScreenshots.proto.thumbnail.proto.thumbnails.proto.screenshot.proto.screenshots (C:\ReactFinalProject\server\node_modules\fluent-ffmpeg\lib\recipes.js:109:37)   
    at C:\ReactFinalProject\server\Routes\vi\videosRouter.js:178:10
    at Layer.handle [as handle_request] (C:\ReactFinalProject\server\node_modules\express\lib\router\layer.js:95:5)
    at next (C:\ReactFinalProject\server\node_modules\express\lib\router\route.js:137:13)
    at Route.dispatch (C:\ReactFinalProject\server\node_modules\express\lib\router\route.js:112:3)
    at Layer.handle [as handle_request] (C:\ReactFinalProject\server\node_modules\express\lib\router\layer.js:95:5)
    at C:\ReactFinalProject\server\node_modules\express\lib\router\index.js:281:22
    at Function.process_params (C:\ReactFinalProject\server\node_modules\express\lib\router\index.js:341:12)
    at next (C:\ReactFinalProject\server\node_modules\express\lib\router\index.js:275:10)
    at Function.handle (C:\ReactFinalProject\server\node_modules\express\lib\router\index.js:174:3)

文件路径的输出：

{
  fieldname: 'file',
  originalname: '1575554425994_Water - 25949.mp4',
  encoding: '7bit',
  mimetype: 'video/mp4',
  destination: 'uploads/',
  filename: '1656595077410_1575554425994_Water - 25949.mp4',    
  path: 'uploads\\1656595077410_1575554425994_Water - 25949.mp4',
  size: 12536228
}

任何帮助都会帮助我寻求帮助