hwaccel qsvL use vpp

- 调整 -ss 参数位置以确保正确的剪辑起始时间
- 移除多余的 -reset_timestamps 参数避免时间戳重置问题
- 确保 -fflags +genpts 参数在正确的命令序列中设置
- 修复拼接操作中的时间偏移参数顺序
- 优化视频处理流程中的时间戳生成逻辑

api/oss_upload.go

@@ -75,3 +75,17 @@ func OssUpload(ctx context.Context, url, filePath string) error {
 	span.SetStatus(codes.Ok, "上传成功")
 	return nil
 }
+
+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, resolution)
+	if err != nil {
+		return err
+	}
+	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
+	}
+	return nil
+}

api/task_report.go

@@ -126,3 +126,71 @@ func ReportTaskSuccess(ctx context.Context, taskId string, file *dto.FileObject)
 		return false
 	}
 }
+
+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?resolution=" + resolution
+	span.SetAttributes(attribute.String("http.url", url))
+	span.SetAttributes(attribute.String("http.method", "GET"))
+	req, err := http.NewRequest("GET", url, nil)
+	if err != nil {
+		span.SetAttributes(attribute.String("error", err.Error()))
+		span.SetStatus(codes.Error, "创建请求失败")
+		logger.Error("创建请求失败", zap.Error(err))
+		return "", err
+	}
+	resp, err := GetAPIClient().Do(req)
+	if err != nil {
+		span.SetAttributes(attribute.String("error", err.Error()))
+		span.SetStatus(codes.Error, "发送请求失败")
+		logger.Error("发送请求失败", zap.Error(err))
+		return "", err
+	}
+	span.SetAttributes(attribute.String("http.status", resp.Status))
+	span.SetAttributes(attribute.Int("http.status_code", resp.StatusCode))
+	defer resp.Body.Close()
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		span.SetAttributes(attribute.String("error", err.Error()))
+		span.SetStatus(codes.Error, "读取响应体失败")
+		logger.Error("读取响应体失败", zap.Error(err))
+		return "", err
+	}
+	return string(body), nil
+}
+
+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?resolution=" + resolution
+	span.SetAttributes(attribute.String("http.url", url))
+	span.SetAttributes(attribute.String("http.method", "POST"))
+
+	req, err := http.NewRequest("POST", url, nil)
+	if err != nil {
+		span.SetAttributes(attribute.String("error", err.Error()))
+		span.SetStatus(codes.Error, "创建请求失败")
+		logger.Error("创建请求失败", zap.Error(err))
+		return false
+	}
+
+	resp, err := GetAPIClient().Do(req)
+	if err != nil {
+		span.SetAttributes(attribute.String("error", err.Error()))
+		span.SetStatus(codes.Error, "发送请求失败")
+		logger.Error("发送请求失败", zap.Error(err))
+		return false
+	}
+	defer resp.Body.Close()
+
+	span.SetAttributes(attribute.String("http.status", resp.Status))
+	span.SetAttributes(attribute.Int("http.status_code", resp.StatusCode))
+	if resp.StatusCode == 200 {
+		span.SetStatus(codes.Ok, "成功")
+		return true
+	} else {
+		span.SetStatus(codes.Error, "失败")
+		return false
+	}
+}

api/viid_client.go

@@ -121,7 +121,7 @@ func (c *ImageProcessingConfig) GetEffectiveConfig() *ImageProcessingConfig {
 }
 
 type UploadConfig struct {
-	TaskID             int64                  `json:"taskId"`
+	TaskID             int64                  `json:"taskId,string"`
 	FaceUploadURL      string                 `json:"faceUploadUrl"`
 	ThumbnailUploadURL string                 `json:"thumbnailUploadUrl"`
 	SourceUploadURL    string                 `json:"sourceUploadUrl"`
@@ -147,12 +147,12 @@ type FacePositionInfo struct {
 }
 
 type SubmitResultRequest struct {
-	TaskID       int64            `json:"taskId"`
+	TaskID       int64            `json:"taskId,string"`
 	FacePosition FacePositionInfo `json:"facePosition"`
 }
 
 type SubmitFailureRequest struct {
-	TaskID       int64  `json:"taskId"`
+	TaskID       int64  `json:"taskId,string"`
 	ErrorCode    string `json:"errorCode"`
 	ErrorMessage string `json:"errorMessage"`
 }

config.yaml

@@ -32,3 +32,9 @@ disconnectAction:
   enabled: false
   thresholdMinutes: 5
   command: ""
+preview:
+  enabled: true
+  hwaccel: ""
+  resolutions:
+    - 720
+    - 1080

config/dto.go

@@ -64,6 +64,12 @@ type DisconnectActionConfig struct {
 	Command          string `mapstructure:"command"`
 }
 
+type PreviewConfig struct {
+	Enabled     bool   `mapstructure:"enabled"`
+	Resolutions []int  `mapstructure:"resolutions"`
+	HwAccel     string `mapstructure:"hwaccel"`
+}
+
 type MainConfig struct {
 	Api              ApiConfig              `mapstructure:"api"`
 	Record           RecordConfig           `mapstructure:"record"`
@@ -71,4 +77,5 @@ type MainConfig struct {
 	FileName         FileNameConfig         `mapstructure:"fileName"`
 	Viid             ViidConfig             `mapstructure:"viid"`
 	DisconnectAction DisconnectActionConfig `mapstructure:"disconnectAction"`
+	Preview          PreviewConfig          `mapstructure:"preview"`
 }

main.go

@@ -7,13 +7,16 @@ import (
 	"ZhenTuLocalPassiveAdapter/dto"
 	"ZhenTuLocalPassiveAdapter/logger"
 	"ZhenTuLocalPassiveAdapter/telemetry"
+	"ZhenTuLocalPassiveAdapter/util"
 	"context"
 	"errors"
 	"fmt"
+	"io"
 	"os"
 	"os/exec"
 	"os/signal"
 	"runtime"
+	"strings"
 	"syscall"
 	"time"
 
@@ -48,6 +51,20 @@ func startTask(device config.DeviceMapping, task dto.Task) {
 	logger.Info("处理任务成功",
 		zap.String("taskID", task.TaskID),
 		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"
+	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 {
 		span.SetStatus(codes.Error, "上传文件失败")
@@ -56,6 +73,9 @@ func startTask(device config.DeviceMapping, task dto.Task) {
 			zap.String("deviceNo", task.DeviceNo),
 			zap.Error(err))
 		api.ReportTaskFailure(ctx, task.TaskID)
+		if previewEnabled && copyErr == nil {
+			os.Remove(copyFile)
+		}
 		return
 	}
 	result := api.ReportTaskSuccess(ctx, task.TaskID, fo)
@@ -65,12 +85,76 @@ func startTask(device config.DeviceMapping, task dto.Task) {
 			zap.String("taskID", task.TaskID),
 			zap.String("deviceNo", task.DeviceNo),
 			zap.Error(err))
+		if previewEnabled && copyErr == nil {
+			os.Remove(copyFile)
+		}
 		return
 	}
 	span.SetStatus(codes.Ok, "上传文件成功")
 	logger.Info("上传文件成功",
 		zap.String("taskID", task.TaskID),
 		zap.String("deviceNo", task.DeviceNo))
+
+	// 异步：从副本压缩预览 → 上传 → 上报
+	if previewEnabled && copyErr == nil {
+		go uploadPreview(task.TaskID, copyFile)
+	}
+}
+
+func uploadPreview(taskID string, copyFile string) {
+	ctx, span := tracer.Start(context.Background(), "uploadPreview")
+	defer span.End()
+	defer os.Remove(copyFile)
+
+	baseName := strings.TrimSuffix(copyFile, "_copy.mp4")
+
+	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 {
+			logger.Error("生成预览文件失败",
+				zap.String("taskID", taskID),
+				zap.String("resolution", resolution))
+			continue
+		}
+
+		err := api.UploadPreviewFile(ctx, taskID, previewFile, resolution)
+		if err != nil {
+			logger.Error("上传预览文件失败",
+				zap.String("taskID", taskID),
+				zap.String("resolution", resolution),
+				zap.Error(err))
+			os.Remove(previewFile)
+			continue
+		}
+		if !api.ReportPreviewSuccess(ctx, taskID, resolution) {
+			logger.Error("上报预览成功失败",
+				zap.String("taskID", taskID),
+				zap.String("resolution", resolution))
+			continue
+		}
+		logger.Info("预览上传成功",
+			zap.String("taskID", taskID),
+			zap.String("resolution", resolution))
+	}
+
+	span.SetStatus(codes.Ok, "预览处理完成")
+}
+
+func copyFileOnDisk(src, dst string) error {
+	in, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+	out, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+	_, err = io.Copy(out, in)
+	return err
 }
 
 func executeDisconnectCommand(command string) {

util/ffmpeg.go

@@ -1,14 +1,13 @@
 package util
 
 import (
+	"ZhenTuLocalPassiveAdapter/config"
 	"ZhenTuLocalPassiveAdapter/dto"
 	"ZhenTuLocalPassiveAdapter/logger"
 	"bytes"
 	"context"
+	"errors"
 	"fmt"
-	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/codes"
-	"go.uber.org/zap"
 	"math/rand"
 	"os"
 	"os/exec"
@@ -18,6 +17,10 @@ import (
 	"strings"
 	"sync"
 	"time"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.uber.org/zap"
 )
 
 const FfmpegExec = "ffmpeg"
@@ -67,8 +70,10 @@ func runFfmpegForMultipleFile1(ctx context.Context, task *dto.FfmpegTask) bool {
 	var wg sync.WaitGroup
 	var mu sync.Mutex
 	var notOk bool
+	clonedFiles := make([]dto.File, len(task.Files))
+	copy(clonedFiles, task.Files)
 	var taskClone = dto.FfmpegTask{
-		Files:      task.Files,
+		Files:      clonedFiles,
 		OutputFile: task.OutputFile,
 		Offset:     task.Offset,
 		Length:     task.Length,
@@ -79,7 +84,20 @@ func runFfmpegForMultipleFile1(ctx context.Context, task *dto.FfmpegTask) bool {
 		go func(file *dto.File) {
 			defer wg.Done()
 			tmpFile := path.Join(os.TempDir(), file.Name+strconv.Itoa(rand.Int())+".ts")
-			result, err := convertMp4ToTs(subCtx, *file, tmpFile)
+			codec, err := GetVideoCodec(subCtx, file.Url)
+			if err != nil {
+				logger.Error("获取视频编码失败", zap.Error(err))
+				mu.Lock()
+				notOk = true
+				mu.Unlock()
+				return
+			}
+			var result bool
+			if codec == "hevc" {
+				result, err = convertHevcToTs(subCtx, *file, tmpFile)
+			} else {
+				result, err = convertMp4ToTs(subCtx, *file, tmpFile)
+			}
 			if err != nil {
 				logger.Error("转码出错", zap.Error(err))
 				mu.Lock()
@@ -101,6 +119,12 @@ func runFfmpegForMultipleFile1(ctx context.Context, task *dto.FfmpegTask) bool {
 	wg.Wait()
 
 	if notOk {
+		// 清理已成功转换的临时文件
+		for i := range taskClone.Files {
+			if taskClone.Files[i].Url != task.Files[i].Url {
+				os.Remove(taskClone.Files[i].Url)
+			}
+		}
 		span.SetStatus(codes.Error, "FFMPEG多文件转码失败")
 		return false
 	}
@@ -147,7 +171,7 @@ func runFfmpegForMultipleFile2(ctx context.Context, task *dto.FfmpegTask) bool {
 	subCtx, span := tracer.Start(ctx, "runFfmpegForMultipleFile2")
 	defer span.End()
 	// 多文件，方法二：使用计算资源编码
-	result, err := SlowVideoCut(subCtx, task.Files, task.Offset, task.Offset, task.OutputFile)
+	result, err := SlowVideoCut(subCtx, task.Files, task.Offset, task.Length, task.OutputFile)
 	if err != nil {
 		return false
 	}
@@ -183,14 +207,6 @@ func runFfmpegForSingleFile(ctx context.Context, task *dto.FfmpegTask) bool {
 		span.SetStatus(codes.Error, "FFMPEG单个文件裁切失败")
 		return false
 	}
-	stat, err := os.Stat(task.OutputFile)
-	if err != nil {
-		span.SetStatus(codes.Error, "文件不存在")
-		logger.Error("文件不存在", zap.String("outputFile", task.OutputFile))
-		return false
-	}
-	span.SetAttributes(attribute.String("file.name", task.OutputFile))
-	span.SetAttributes(attribute.Int64("file.size", stat.Size()))
 	if result {
 		outfile, err := os.Stat(task.OutputFile)
 		if err != nil {
@@ -228,7 +244,7 @@ func CheckFileCoverageAndConstructTask(ctx context.Context, fileList []dto.File,
 	}
 	// 按照 Create 的值升序排序
 	sort.Slice(fileList, func(i, j int) bool {
-		return fileList[i].StartTime.Unix() <= fileList[j].StartTime.Unix()
+		return fileList[i].StartTime.Unix() < fileList[j].StartTime.Unix()
 	})
 
 	// 如果片段在中间断开时间过长
@@ -316,11 +332,12 @@ func QuickVideoCut(ctx context.Context, inputFile string, offset, length float64
 		FfmpegExec,
 		"-hide_banner",
 		"-y",
-		"-i", inputFile,
-		"-c:v", "copy",
-		"-an",
-		"-reset_timestamps", "1",
 		"-ss", strconv.FormatFloat(offset, 'f', 2, 64),
+		"-i", inputFile,
+		"-f", "lavfi", "-i", "anullsrc=channel_layout=mono:sample_rate=44100",
+		"-c:v", "copy",
+		"-c:a", "aac",
+		"-shortest",
 		"-t", strconv.FormatFloat(length, 'f', 2, 64),
 		"-fflags", "+genpts",
 		"-f", "mp4",
@@ -332,7 +349,7 @@ func QuickVideoCut(ctx context.Context, inputFile string, offset, length float64
 func QuickConcatVideoCut(ctx context.Context, inputFiles []dto.File, offset, length float64, outputFile string) (bool, error) {
 	subCtx, span := tracer.Start(ctx, "QuickConcatVideoCut")
 	defer span.End()
-	tmpFile := fmt.Sprintf("tmp%.10f.txt", rand.Float64())
+	tmpFile := path.Join(os.TempDir(), fmt.Sprintf("tmp%.10f.txt", rand.Float64()))
 	tmpFileObj, err := os.Create(tmpFile)
 	if err != nil {
 		span.SetAttributes(attribute.String("error", err.Error()))
@@ -359,11 +376,14 @@ func QuickConcatVideoCut(ctx context.Context, inputFiles []dto.File, offset, len
 		"-y",
 		"-f", "concat",
 		"-safe", "0",
-		"-i", tmpFile,
-		"-c:v", "copy",
-		"-an",
 		"-ss", strconv.FormatFloat(offset, 'f', 2, 64),
+		"-i", tmpFile,
+		"-f", "lavfi", "-i", "anullsrc=channel_layout=mono:sample_rate=44100",
+		"-c:v", "copy",
+		"-c:a", "aac",
+		"-shortest",
 		"-t", strconv.FormatFloat(length, 'f', 2, 64),
+		"-fflags", "+genpts",
 		"-f", "mp4",
 		outputFile,
 	}
@@ -383,6 +403,9 @@ func SlowVideoCut(ctx context.Context, inputFiles []dto.File, offset, length flo
 		ffmpegCmd = append(ffmpegCmd, "-i", file.Url)
 	}
 
+	// 添加静音音频源作为额外输入
+	ffmpegCmd = append(ffmpegCmd, "-f", "lavfi", "-i", "anullsrc=channel_layout=mono:sample_rate=44100")
+
 	inputCount := len(inputFiles)
 	filterComplex := strings.Builder{}
 	for i := 0; i < inputCount; i++ {
@@ -393,8 +416,10 @@ func SlowVideoCut(ctx context.Context, inputFiles []dto.File, offset, length flo
 	ffmpegCmd = append(ffmpegCmd,
 		"-filter_complex", filterComplex.String(),
 		"-map", "[v]",
+		"-map", fmt.Sprintf("%d:a", inputCount),
+		"-c:a", "aac",
+		"-shortest",
 		"-preset:v", "fast",
-		"-an",
 		"-ss", strconv.FormatFloat(offset, 'f', 2, 64),
 		"-t", strconv.FormatFloat(length, 'f', 2, 64),
 		"-f", "mp4",
@@ -413,48 +438,174 @@ func handleFfmpegProcess(ctx context.Context, ffmpegCmd []string) (bool, error)
 		span.SetAttributes(attribute.Int64("ffmpeg.duration", int64(time.Since(startTime).Seconds())))
 	}()
 	logger.Info("FFMPEG执行命令", zap.String("command", strings.Join(ffmpegCmd, " ")))
-	cmd := exec.Command(ffmpegCmd[0], ffmpegCmd[1:]...)
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, 1*time.Minute)
+	defer cancel()
+	cmd := exec.CommandContext(timeoutCtx, ffmpegCmd[0], ffmpegCmd[1:]...)
 
 	var stderr bytes.Buffer
 	cmd.Stderr = &stderr
 
-	err := cmd.Start()
+	err := cmd.Run()
 	if err != nil {
 		span.SetAttributes(attribute.String("ffmpeg.stderr", stderr.String()))
-		span.SetStatus(codes.Error, "FFMPEG执行命令失败")
+		if errors.Is(timeoutCtx.Err(), context.DeadlineExceeded) && ctx.Err() == nil {
-		logger.Error("FFMPEG执行命令失败",
-			zap.String("error", stderr.String()),
-			zap.String("command", strings.Join(ffmpegCmd, " ")))
-		return false, err
-	}
-	defer cmd.Process.Kill()
-
-	done := make(chan error, 1)
-	go func() {
-		done <- cmd.Wait()
-	}()
-
-	select {
-	case <-time.After(1 * time.Minute):
-		span.SetAttributes(attribute.String("ffmpeg.stderr", stderr.String()))
 			span.SetStatus(codes.Error, "FFMPEG执行命令没有在1分钟内退出")
 			logger.Warn("FFMPEG执行命令超时", zap.String("command", strings.Join(ffmpegCmd, " ")))
 			return false, fmt.Errorf("ffmpeg command timed out")
-	case err := <-done:
+		}
-		if err != nil {
+		if ctx.Err() != nil {
-			span.SetAttributes(attribute.String("ffmpeg.stderr", stderr.String()))
+			span.SetStatus(codes.Error, "FFMPEG执行命令被取消")
+			logger.Warn("FFMPEG执行命令被取消", zap.String("command", strings.Join(ffmpegCmd, " ")))
+			return false, ctx.Err()
+		}
 		span.SetStatus(codes.Error, "FFMPEG执行命令失败")
 		logger.Error("FFMPEG执行命令失败",
 			zap.String("error", stderr.String()),
 			zap.String("command", strings.Join(ffmpegCmd, " ")))
 		return false, err
 	}
-		endTime := time.Now()
 	logger.Info("FFMPEG执行命令结束",
-			zap.Int64("durationMs", endTime.Sub(startTime).Milliseconds()),
+		zap.Int64("durationMs", time.Since(startTime).Milliseconds()),
 		zap.String("command", strings.Join(ffmpegCmd, " ")))
 	return true, nil
 }
+
+func CompressVideo(ctx context.Context, inputFile, outputFile string, height int) (bool, error) {
+	subCtx, span := tracer.Start(ctx, "CompressVideo")
+	defer span.End()
+	span.SetAttributes(attribute.Int("height", height))
+
+	hwaccel := strings.ToLower(strings.TrimSpace(config.Config.Preview.HwAccel))
+	if hwaccel != "" && hwaccel != "none" {
+		span.SetAttributes(attribute.String("hwaccel", hwaccel))
+		ok, err := compressVideoGPU(subCtx, inputFile, outputFile, height, hwaccel)
+		if ok {
+			return true, nil
+		}
+		logger.Warn("GPU编码失败，回退到CPU编码",
+			zap.String("hwaccel", hwaccel),
+			zap.Error(err))
+		os.Remove(outputFile)
+	}
+
+	return compressVideoCPU(subCtx, inputFile, outputFile, height)
+}
+
+func compressVideoCPU(ctx context.Context, inputFile, outputFile string, height int) (bool, error) {
+	_, span := tracer.Start(ctx, "compressVideoCPU")
+	defer span.End()
+	scaleFilter := fmt.Sprintf("scale=-2:%d", height)
+	ffmpegCmd := []string{
+		FfmpegExec,
+		"-hide_banner",
+		"-y",
+		"-i", inputFile,
+		"-vf", scaleFilter,
+		"-c:v", "libx264",
+		"-preset", "fast",
+		"-crf", "28",
+		"-c:a", "aac",
+		"-b:a", "128k",
+		"-f", "mp4",
+		outputFile,
+	}
+	return handleFfmpegProcess(ctx, ffmpegCmd)
+}
+
+func compressVideoGPU(ctx context.Context, inputFile, outputFile string, height int, hwaccel string) (bool, error) {
+	_, span := tracer.Start(ctx, "compressVideoGPU")
+	defer span.End()
+	span.SetAttributes(attribute.String("hwaccel", hwaccel))
+
+	var ffmpegCmd []string
+	switch hwaccel {
+	case "nvenc":
+		scaleFilter := fmt.Sprintf("scale_cuda=-2:%d", height)
+		ffmpegCmd = []string{
+			FfmpegExec,
+			"-hide_banner",
+			"-y",
+			"-hwaccel", "cuda",
+			"-hwaccel_output_format", "cuda",
+			"-i", inputFile,
+			"-vf", scaleFilter,
+			"-c:v", "h264_nvenc",
+			"-preset", "p4",
+			"-cq", "28",
+			"-c:a", "aac",
+			"-b:a", "128k",
+			"-f", "mp4",
+			outputFile,
+		}
+	case "amf":
+		scaleFilter := fmt.Sprintf("scale=-2:%d", height)
+		ffmpegCmd = []string{
+			FfmpegExec,
+			"-hide_banner",
+			"-y",
+			"-i", inputFile,
+			"-vf", scaleFilter,
+			"-c:v", "h264_amf",
+			"-quality", "balanced",
+			"-rc", "cqp",
+			"-qp_i", "28",
+			"-qp_p", "28",
+			"-c:a", "aac",
+			"-b:a", "128k",
+			"-f", "mp4",
+			outputFile,
+		}
+	case "qsv":
+		scaleFilter := fmt.Sprintf("vpp_qsv=w=-1:h=%d", height)
+		ffmpegCmd = []string{
+			FfmpegExec,
+			"-hide_banner",
+			"-y",
+			"-hwaccel", "qsv",
+			"-hwaccel_output_format", "qsv",
+			"-i", inputFile,
+			"-vf", scaleFilter,
+			"-c:v", "h264_qsv",
+			"-preset", "faster",
+			"-global_quality", "28",
+			"-c:a", "aac",
+			"-b:a", "128k",
+			"-f", "mp4",
+			outputFile,
+		}
+	default:
+		return false, fmt.Errorf("不支持的硬件加速类型: %s", hwaccel)
+	}
+
+	return handleFfmpegProcess(ctx, ffmpegCmd)
+}
+
+func GetVideoCodec(ctx context.Context, filePath string) (string, error) {
+	_, span := tracer.Start(ctx, "GetVideoCodec")
+	defer span.End()
+	ffprobeCmd := []string{
+		"ffprobe",
+		"-v", "error",
+		"-select_streams", "v:0",
+		"-show_entries", "stream=codec_name",
+		"-of", "default=noprint_wrappers=1:nokey=1",
+		filePath,
+	}
+	span.SetAttributes(attribute.String("ffprobe.cmd", ToJson(ffprobeCmd)))
+	cmd := exec.Command(ffprobeCmd[0], ffprobeCmd[1:]...)
+	var out bytes.Buffer
+	cmd.Stdout = &out
+
+	err := cmd.Run()
+	if err != nil {
+		span.SetAttributes(attribute.String("error", err.Error()))
+		span.SetStatus(codes.Error, "获取视频编码失败")
+		return "", fmt.Errorf("failed to get video codec: %w", err)
+	}
+	codec := strings.TrimSpace(out.String())
+	span.SetAttributes(attribute.String("video.codec", codec))
+	return codec, nil
 }
 
 func GetVideoDuration(ctx context.Context, filePath string) (float64, error) {