feat: add fnOS packaging, storage workflows and release pipeline

utils/FFmpegHelper.cs

@@ -236,12 +236,11 @@ namespace dy.net.utils
             if (imageFilePaths == null || !imageFilePaths.Any())
                 throw new ArgumentException("图片路径列表不能为空。", nameof(imageFilePaths));
 
-            if (string.IsNullOrEmpty(audioFilePath) || !File.Exists(audioFilePath))
-                throw new FileNotFoundException("音频文件未找到。", audioFilePath);
-
             if (string.IsNullOrEmpty(outputVideoPath))
                 throw new ArgumentNullException(nameof(outputVideoPath));
 
+            var hasAudio = !string.IsNullOrWhiteSpace(audioFilePath) && File.Exists(audioFilePath);
+
             foreach (var imagePath in imageFilePaths)
             {
                 if (!File.Exists(imagePath.Path))
@@ -278,7 +277,7 @@ namespace dy.net.utils
 
                 // 获取音频时长
                 double audioDurationSeconds = imageList.Count * ImageDisplayDurationSeconds;
-                try
+                if (hasAudio) try
                 {
                     var startInfo = new ProcessStartInfo
                     {
@@ -329,50 +328,10 @@ namespace dy.net.utils
                 // 组合最终滤镜：先适配尺寸，再循环
                 string filterComplex = $"[0:v]{fitFilter},loop=loop={loopCount - 1}:size={imageCount}[v]";
 
-                var arguments = new List<string>
-            {
-                "-y", // 覆盖输出文件
-
-                // 图片序列输入
-                "-f", "image2",
-                "-framerate", imageFps.ToString(CultureInfo.InvariantCulture),
-                "-start_number", "1", // 修正：临时文件是 temp_001、temp_002... 所以起始编号为1
-                "-i", imageSequencePattern,
-
-                // 音频输入
-                "-i", audioFilePath,
-
-                // 滤镜：尺寸适配 + 循环
-                "-filter_complex", filterComplex,
-
-                // 流映射
-                "-map", "[v]",
-                "-map", "1:a",
-
-                // 视频编码参数
-                "-c:v", VideoCodec,
-                "-preset", VideoPreset,
-                "-crf", $"{VideoCrf}",
-                "-s", $"{VideoWidth}x{VideoHeight}",
-                "-pix_fmt", "yuv420p",
-                "-profile:v", "main",
-
-                // 音频编码参数
-                "-c:a", AudioCodec,
-                "-b:a", $"{AudioBitrate}",
-                "-ac", "2",
-                "-ar", "44100",
-
-                // 封装优化
-                "-f", "mp4",
-                "-movflags", "+faststart",
-
-                // 同步参数
-                "-shortest",
-
-                // 输出路径
-                outputVideoPath
-            };
+                var arguments = BuildImageVideoArguments(
+                    imageSequencePattern, hasAudio ? audioFilePath : null, outputVideoPath,
+                    imageFps, filterComplex, VideoWidth, VideoHeight,
+                    VideoCodec, VideoPreset, VideoCrf, AudioCodec, AudioBitrate);
 
                 // 执行FFmpeg命令
                 await ExecuteFFmpegAsync(arguments, progress, cancellationToken);
@@ -401,6 +360,63 @@ namespace dy.net.utils
             }
         }
 
+        internal static List<string> BuildImageVideoArguments(
+            string imageSequencePattern,
+            string audioFilePath,
+            string outputVideoPath,
+            double imageFps,
+            string filterComplex,
+            int videoWidth,
+            int videoHeight,
+            string videoCodec = "libx264",
+            string videoPreset = "medium",
+            int videoCrf = 23,
+            string audioCodec = "aac",
+            string audioBitrate = "192k")
+        {
+            if (string.IsNullOrWhiteSpace(imageSequencePattern)) throw new ArgumentNullException(nameof(imageSequencePattern));
+            if (string.IsNullOrWhiteSpace(outputVideoPath)) throw new ArgumentNullException(nameof(outputVideoPath));
+            if (string.IsNullOrWhiteSpace(filterComplex)) throw new ArgumentNullException(nameof(filterComplex));
+
+            var hasAudio = !string.IsNullOrWhiteSpace(audioFilePath) && File.Exists(audioFilePath);
+            var arguments = new List<string>
+            {
+                "-y",
+                "-f", "image2",
+                "-framerate", imageFps.ToString(CultureInfo.InvariantCulture),
+                "-start_number", "1",
+                "-i", imageSequencePattern
+            };
+            if (hasAudio) arguments.AddRange(new[] { "-i", audioFilePath });
+            arguments.AddRange(new[]
+            {
+                "-filter_complex", filterComplex,
+                "-map", "[v]",
+                "-c:v", videoCodec,
+                "-preset", videoPreset,
+                "-crf", $"{videoCrf}",
+                "-s", $"{videoWidth}x{videoHeight}",
+                "-pix_fmt", "yuv420p",
+                "-profile:v", "main"
+            });
+            if (hasAudio)
+            {
+                arguments.AddRange(new[]
+                {
+                    "-map", "1:a",
+                    "-c:a", audioCodec,
+                    "-b:a", audioBitrate,
+                    "-ac", "2",
+                    "-ar", "44100"
+                });
+            }
+            else arguments.Add("-an");
+            arguments.AddRange(new[] { "-f", "mp4", "-movflags", "+faststart" });
+            if (hasAudio) arguments.Add("-shortest");
+            arguments.Add(outputVideoPath);
+            return arguments;
+        }
+
 
 
 
@@ -782,4 +798,4 @@ namespace dy.net.utils
             _ffmpegProcess?.Dispose();
         }
     }
-}
+}