config p

api/oss_upload.go

@@ -76,14 +76,14 @@ func OssUpload(ctx context.Context, url, filePath string) error {
 	return nil
 }
 
-func UploadPreviewFile(ctx context.Context, taskId string, previewFilePath string) error {
+func UploadPreviewFile(ctx context.Context, taskId string, previewFilePath string, resolution string) error {
 	subCtx, span := tracer.Start(ctx, "UploadPreviewFile")
 	defer span.End()
-	url, err := QueryPreviewUploadUrl(subCtx, taskId)
+	url, err := QueryPreviewUploadUrl(subCtx, taskId, resolution)
 	if err != nil {
 		return err
 	}
-	logger.Info("开始上传预览文件", zap.String("url", url))
+	logger.Info("开始上传预览文件", zap.String("url", url), zap.String("resolution", resolution))
 	if err := OssUpload(subCtx, url, previewFilePath); err != nil {
 		return err
 	}

api/task_report.go

@@ -127,10 +127,10 @@ func ReportTaskSuccess(ctx context.Context, taskId string, file *dto.FileObject)
 	}
 }
 
-func QueryPreviewUploadUrl(ctx context.Context, taskId string) (string, error) {
+func QueryPreviewUploadUrl(ctx context.Context, taskId string, resolution string) (string, error) {
 	_, span := tracer.Start(ctx, "QueryPreviewUploadUrl")
 	defer span.End()
-	url := config.Config.Api.BaseUrl + "/" + taskId + "/previewUploadUrl"
+	url := config.Config.Api.BaseUrl + "/" + taskId + "/previewUploadUrl?resolution=" + resolution
 	span.SetAttributes(attribute.String("http.url", url))
 	span.SetAttributes(attribute.String("http.method", "GET"))
 	req, err := http.NewRequest("GET", url, nil)
@@ -160,10 +160,10 @@ func QueryPreviewUploadUrl(ctx context.Context, taskId string) (string, error) {
 	return string(body), nil
 }
 
-func ReportPreviewSuccess(ctx context.Context, taskId string) bool {
+func ReportPreviewSuccess(ctx context.Context, taskId string, resolution string) bool {
 	_, span := tracer.Start(ctx, "ReportPreviewSuccess")
 	defer span.End()
-	url := config.Config.Api.BaseUrl + "/" + taskId + "/previewSuccess"
+	url := config.Config.Api.BaseUrl + "/" + taskId + "/previewSuccess?resolution=" + resolution
 	span.SetAttributes(attribute.String("http.url", url))
 	span.SetAttributes(attribute.String("http.method", "POST"))
 

config.yaml

@@ -32,3 +32,8 @@ disconnectAction:
   enabled: false
   thresholdMinutes: 5
   command: ""
+preview:
+  enabled: true
+  resolutions:
+    - 720
+    - 1080

config/dto.go

@@ -64,6 +64,11 @@ type DisconnectActionConfig struct {
 	Command          string `mapstructure:"command"`
 }
 
+type PreviewConfig struct {
+	Enabled     bool  `mapstructure:"enabled"`
+	Resolutions []int `mapstructure:"resolutions"`
+}
+
 type MainConfig struct {
 	Api              ApiConfig              `mapstructure:"api"`
 	Record           RecordConfig           `mapstructure:"record"`
@@ -71,4 +76,5 @@ type MainConfig struct {
 	FileName         FileNameConfig         `mapstructure:"fileName"`
 	Viid             ViidConfig             `mapstructure:"viid"`
 	DisconnectAction DisconnectActionConfig `mapstructure:"disconnectAction"`
+	Preview          PreviewConfig          `mapstructure:"preview"`
 }

main.go

@@ -53,13 +53,17 @@ func startTask(device config.DeviceMapping, task dto.Task) {
 		zap.String("deviceNo", task.DeviceNo))
 
 	// 复制主文件用于异步生成预览，避免阻塞主上传流程
+	previewEnabled := config.Config.Preview.Enabled && len(config.Config.Preview.Resolutions) > 0
 	copyFile := strings.TrimSuffix(fo.URL, ".mp4") + "_copy.mp4"
-	copyErr := copyFileOnDisk(fo.URL, copyFile)
+	var copyErr error
+	if previewEnabled {
+		copyErr = copyFileOnDisk(fo.URL, copyFile)
 		if copyErr != nil {
 			logger.Warn("复制文件用于预览失败",
 				zap.String("taskID", task.TaskID),
 				zap.Error(copyErr))
 		}
+	}
 
 	err = api.UploadTaskFile(ctx, task, *fo)
 	if err != nil {
@@ -69,7 +73,7 @@ func startTask(device config.DeviceMapping, task dto.Task) {
 			zap.String("deviceNo", task.DeviceNo),
 			zap.Error(err))
 		api.ReportTaskFailure(ctx, task.TaskID)
-		if copyErr == nil {
+		if previewEnabled && copyErr == nil {
 			os.Remove(copyFile)
 		}
 		return
@@ -81,7 +85,7 @@ func startTask(device config.DeviceMapping, task dto.Task) {
 			zap.String("taskID", task.TaskID),
 			zap.String("deviceNo", task.DeviceNo),
 			zap.Error(err))
-		if copyErr == nil {
+		if previewEnabled && copyErr == nil {
 			os.Remove(copyFile)
 		}
 		return
@@ -91,8 +95,8 @@ func startTask(device config.DeviceMapping, task dto.Task) {
 		zap.String("taskID", task.TaskID),
 		zap.String("deviceNo", task.DeviceNo))
 
-	// 异步：从副本压缩720p预览 → 上传 → 上报
+	// 异步：从副本压缩预览 → 上传 → 上报
-	if copyErr == nil {
+	if previewEnabled && copyErr == nil {
 		go uploadPreview(task.TaskID, copyFile)
 	}
 }
@@ -102,32 +106,40 @@ func uploadPreview(taskID string, copyFile string) {
 	defer span.End()
 	defer os.Remove(copyFile)
 
-	previewFile := strings.TrimSuffix(copyFile, "_copy.mp4") + "_preview.mp4"
+	baseName := strings.TrimSuffix(copyFile, "_copy.mp4")
-	ok, _ := util.CompressTo720p(ctx, copyFile, previewFile)
+
+	for _, height := range config.Config.Preview.Resolutions {
+		resolution := fmt.Sprintf("%dp", height)
+		previewFile := fmt.Sprintf("%s_preview_%s.mp4", baseName, resolution)
+		ok, _ := util.CompressVideo(ctx, copyFile, previewFile, height)
 		if !ok {
-		span.SetStatus(codes.Error, "生成预览文件失败")
+			logger.Error("生成预览文件失败",
-		logger.Error("生成预览文件失败", zap.String("taskID", taskID))
+				zap.String("taskID", taskID),
-		return
+				zap.String("resolution", resolution))
+			continue
 		}
 
-	err := api.UploadPreviewFile(ctx, taskID, previewFile)
+		err := api.UploadPreviewFile(ctx, taskID, previewFile, resolution)
 		if err != nil {
-		span.SetStatus(codes.Error, "上传预览文件失败")
 			logger.Error("上传预览文件失败",
 				zap.String("taskID", taskID),
+				zap.String("resolution", resolution),
 				zap.Error(err))
 			os.Remove(previewFile)
-		return
+			continue
 		}
-	result := api.ReportPreviewSuccess(ctx, taskID)
+		if !api.ReportPreviewSuccess(ctx, taskID, resolution) {
-	if !result {
-		span.SetStatus(codes.Error, "上报预览成功失败")
 			logger.Error("上报预览成功失败",
-			zap.String("taskID", taskID))
+				zap.String("taskID", taskID),
-		return
+				zap.String("resolution", resolution))
+			continue
 		}
-	span.SetStatus(codes.Ok, "预览上传成功")
+		logger.Info("预览上传成功",
-	logger.Info("预览上传成功", zap.String("taskID", taskID))
+			zap.String("taskID", taskID),
+			zap.String("resolution", resolution))
+	}
+
+	span.SetStatus(codes.Ok, "预览处理完成")
 }
 
 func copyFileOnDisk(src, dst string) error {

util/ffmpeg.go

@@ -470,15 +470,17 @@ func handleFfmpegProcess(ctx context.Context, ffmpegCmd []string) (bool, error)
 	return true, nil
 }
 
-func CompressTo720p(ctx context.Context, inputFile, outputFile string) (bool, error) {
+func CompressVideo(ctx context.Context, inputFile, outputFile string, height int) (bool, error) {
-	subCtx, span := tracer.Start(ctx, "CompressTo720p")
+	subCtx, span := tracer.Start(ctx, "CompressVideo")
 	defer span.End()
+	span.SetAttributes(attribute.Int("height", height))
+	scaleFilter := fmt.Sprintf("scale=-2:%d", height)
 	ffmpegCmd := []string{
 		FfmpegExec,
 		"-hide_banner",
 		"-y",
 		"-i", inputFile,
-		"-vf", "scale=-2:720",
+		"-vf", scaleFilter,
 		"-c:v", "libx264",
 		"-preset", "fast",
 		"-crf", "28",