update

Services/Video/VideoProcess.cs

@@ -27,7 +27,7 @@ namespace VideoConcat.Services.Video
             try
             {
                 // 1. 获取视频信息
-                var mediaInfo = await FFProbe.AnalyseAsync(inputPath);
+                IMediaAnalysis mediaInfo = await FFProbe.AnalyseAsync(inputPath);
                 var videoStream = mediaInfo.PrimaryVideoStream;
                 if (videoStream == null)
                 {
@@ -60,77 +60,44 @@ namespace VideoConcat.Services.Video
                         throw new Exception("转换失败！");
                     }
                 }
-
+                // 1. 获取视频信息
+                mediaInfo = await FFProbe.AnalyseAsync(inputPath);
+                videoStream = mediaInfo.PrimaryVideoStream;
+                if (videoStream == null)
+                {
+                    Console.WriteLine("没有找到视频流");
+                    return false;
+                }
                 // 视频总时长（秒）
-                var totalDuration = mediaInfo.Duration.TotalSeconds;
+                double totalDuration = mediaInfo.Duration.TotalSeconds;
-                // 计算帧时间参数
                 double frameRate = videoStream.FrameRate;
                 double frameDuration = Math.Round(1.0 / frameRate, 6); // 一帧时长（秒）
-
                 int totalFram = (int)(totalDuration * frameRate);
-                // 2. 随机生成要删除的帧的时间点（避开最后一帧，防止越界）
-                var random = new Random();
-                var randomFrame = random.Next(20, totalFram - 10);
 
-                double frameTime = Math.Round((randomFrame - 1) * frameDuration,6); // 目标帧开始时间
+                var random = new Random();
-                double nextFrameTime = Math.Round(randomFrame * frameDuration,6); // 下一帧开始时间
+                var randomFrame = random.Next(1, (int)totalDuration);
-                                                                    // 临时文件路径
+
+
+
+
                 string videoPart1 = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
                 string videoPart2 = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
-                string audioPath = Path.Combine(tempDir, $"{Guid.NewGuid()}.aac");
+                bool hasSubVideo1 = SubVideo(inputPath, videoPart1, 0, randomFrame-0.016);
-                string videoNoaudioPath = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
+                bool hasSubVideo2 = SubVideo(inputPath, videoPart2, randomFrame, totalDuration);
-                string finalyPath = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
-
-                string audioPart1 = Path.Combine(tempDir, $"{Guid.NewGuid()}.aac");
-                string audioPart2 = Path.Combine(tempDir, $"{Guid.NewGuid()}.aac");
-
-
-                // 分离视频流（不含音频）
-                await FFMpegArguments
-                    .FromFileInput(inputPath)
-                    .OutputToFile(videoNoaudioPath, true, opt => opt.WithCustomArgument("-an -c:v copy"))
-                    .ProcessAsynchronously();
-
-                if (!File.Exists(videoNoaudioPath))
-                    return false;
-
-                // 分离音频流（不含视频）（如有音频）
-                if (mediaInfo.PrimaryAudioStream != null)
-                {
-                    await FFMpegArguments
-                        .FromFileInput(inputPath)
-                        .OutputToFile(audioPath, true, opt => opt.WithCustomArgument("-vn -c:a copy"))
-                        .ProcessAsynchronously();
-
-                    if (!File.Exists(audioPath))
-                        return false;
-                }
-
-
-                inputPath = videoNoaudioPath;
-
-
-
-
-                bool hasSubVideo1 = SubVideo(inputPath, videoPart1, 0, frameTime);
-                bool hasSubVideo2 = SubVideo(inputPath, videoPart2, nextFrameTime, totalDuration);
                 if (!hasSubVideo1 || !hasSubVideo2)
                 {
                     return false;
                 }
 
 
-                bool isJoinSuccess = JoinVideo(finalyPath, [videoPart1, videoPart2]);
+                bool isJoinSuccess = JoinVideo(outputPath, [videoPart1, videoPart2]);
                 if (!isJoinSuccess)
                 {
                     return false;
                 }
 
-                return await FFMpegArguments.FromFileInput(finalyPath)
+                return false;
-                     .AddFileInput(audioPath)
+
-                     .OutputToFile(outputPath, true, opt =>
-                         opt.WithCustomArgument("-c copy -shortest -y"))
-                     .ProcessAsynchronously();
             }
             catch (Exception ex)
             {
@@ -153,7 +120,7 @@ namespace VideoConcat.Services.Video
         {
             return FFMpegArguments
                 .FromFileInput(inputPath, true, options => options.Seek(TimeSpan.FromSeconds(startSec)).EndSeek(TimeSpan.FromSeconds(endSec)))
-                .OutputToFile(outputPath, true, options => options.CopyChannel().WithCustomArgument("-an"))
+                .OutputToFile(outputPath, true, options => options.CopyChannel()) //.WithCustomArgument("-an") 去掉音频
                 .ProcessSynchronously();
         }
 
@@ -170,5 +137,88 @@ namespace VideoConcat.Services.Video
         {
             return FFMpeg.Join(outPutPath, videoParts);
         }
+
+        public async Task<bool> ProcessVideo(string inputPath,string outputPath, string tempDir)
+        {
+            // 1. 获取视频信息
+            IMediaAnalysis mediaInfo = await FFProbe.AnalyseAsync(inputPath);
+            var videoStream = mediaInfo.PrimaryVideoStream;
+            if (videoStream == null)
+            {
+                Console.WriteLine("没有找到视频流");
+                return false;
+            }
+            // 视频总时长（秒）
+            var totalDuration = mediaInfo.Duration.TotalSeconds;
+
+            // 计算帧时间参数
+            double frameRate = videoStream.FrameRate;
+            double frameDuration = Math.Round(1.0 / frameRate, 6); // 一帧时长（秒）
+
+            int totalFram = (int)(totalDuration * frameRate);
+            // 2. 随机生成要删除的帧的时间点（避开最后一帧，防止越界）
+            var random = new Random();
+            var randomFrame = random.Next(20, totalFram - 10);
+
+            double frameTime = Math.Round((randomFrame - 1) * frameDuration, 6); // 目标帧开始时间
+            double nextFrameTime = Math.Round((randomFrame + 1) * frameDuration, 6); // 下一帧开始时间
+                                                                                     // 临时文件路径
+            string videoPart1 = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
+            string videoPart2 = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
+            string audioPath = Path.Combine(tempDir, $"{Guid.NewGuid()}.aac");
+            string videoNoaudioPath = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
+            string finalyPath = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
+
+            string audioPart1 = Path.Combine(tempDir, $"{Guid.NewGuid()}.aac");
+            string audioPart2 = Path.Combine(tempDir, $"{Guid.NewGuid()}.aac");
+
+
+            // 分离视频流（不含音频）
+            await FFMpegArguments
+                .FromFileInput(inputPath)
+                        .OutputToFile(videoNoaudioPath, true, opt => opt.WithCustomArgument("-an -c:v copy"))
+                        .ProcessAsynchronously();
+
+            if (!File.Exists(videoNoaudioPath))
+                return false;
+
+            // 分离音频流（不含视频）（如有音频）
+            if (mediaInfo.PrimaryAudioStream != null)
+            {
+                await FFMpegArguments
+                    .FromFileInput(inputPath)
+                    .OutputToFile(audioPath, true, opt => opt.WithCustomArgument("-vn -c:a copy"))
+                    .ProcessAsynchronously();
+
+                if (!File.Exists(audioPath))
+                    return false;
+            }
+
+
+            inputPath = videoNoaudioPath;
+
+
+
+
+            bool hasSubVideo1 = SubVideo(inputPath, videoPart1, 0, frameTime);
+            bool hasSubVideo2 = SubVideo(inputPath, videoPart2, nextFrameTime, totalDuration);
+            if (!hasSubVideo1 || !hasSubVideo2)
+            {
+                return false;
+            }
+
+
+            bool isJoinSuccess = JoinVideo(finalyPath, [videoPart1, videoPart2]);
+            if (!isJoinSuccess)
+            {
+                return false;
+            }
+
+            return await FFMpegArguments.FromFileInput(finalyPath)
+                 .AddFileInput(audioPath)
+                 .OutputToFile(outputPath, true, opt =>
+                     opt.WithCustomArgument("-c copy -shortest -y"))
+                 .ProcessAsynchronously();
+        }
     }
 }

ViewModels/ExtractWindowViewModel.cs

@@ -76,8 +76,15 @@ namespace VideoConcat.ViewModels
                                     var remover = new VideoProcess();
                                     // 删除4秒处的帧（需根据实际帧位置调整）
                                     string _tmpPath = Path.GetDirectoryName(video) ?? "";
-                                    string _tmpFileName = $"抽帧视频-{Path.GetFileName(video)}";
+                                    string _tmpFileName = $"{(new Random()).Next(10000,99999)}{Path.GetFileName(video)}";
-                                   await VideoProcess.RemoveFrameRandomeAsync(video, $"{_tmpPath}\\{_tmpFileName}");
+
+                                    string outPath = Path.Combine(_tmpPath, "out");
+                                    if (!Path.Exists(outPath))
+                                    {
+                                        Directory.CreateDirectory(outPath);
+                                    }
+
+                                    await VideoProcess.RemoveFrameRandomeAsync(video, $"{_tmpPath}\\out\\{_tmpFileName}");
                                 }
                                 finally
                                 {