diff --git a/util/ffmpeg.go b/util/ffmpeg.go
index 603a078..e2b311a 100644
--- a/util/ffmpeg.go
+++ b/util/ffmpeg.go
@@ -5,10 +5,8 @@ import (
 	"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 +16,10 @@ import (
 	"strings"
 	"sync"
 	"time"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.uber.org/zap"
 )
 
 const FfmpegExec = "ffmpeg"
@@ -67,8 +69,10 @@ 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,
@@ -114,6 +118,12 @@ 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
 	}
@@ -196,14 +206,6 @@ 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 {
@@ -241,7 +243,7 @@ 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
@@ -347,7 +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()))
@@ -435,48 +437,37 @@ 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()))
+		if errors.Is(timeoutCtx.Err(), context.DeadlineExceeded) && ctx.Err() == nil {
+			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")
+		}
+		if ctx.Err() != nil {
+			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
 	}
-	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 {
-			span.SetAttributes(attribute.String("ffmpeg.stderr", stderr.String()))
-			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.String("command", strings.Join(ffmpegCmd, " ")))
-		return true, nil
-	}
+	logger.Info("FFMPEG执行命令结束",
+		zap.Int64("durationMs", time.Since(startTime).Milliseconds()),
+		zap.String("command", strings.Join(ffmpegCmd, " ")))
+	return true, nil
 }
 
 func GetVideoCodec(ctx context.Context, filePath string) (string, error) {