diff --git a/backend/app/commands/testx/testing.go b/backend/app/commands/testx/testing.go
index 467004b..e5d9f3d 100644
--- a/backend/app/commands/testx/testing.go
+++ b/backend/app/commands/testx/testing.go
@@ -39,6 +39,14 @@ func (w *orderRefundTestWorker) Work(ctx context.Context, job *river.Job[jobs_ar
 	return nil
 }
 
+type mediaAssetProcessTestWorker struct {
+	river.WorkerDefaults[jobs_args.MediaAssetProcessJob]
+}
+
+func (w *mediaAssetProcessTestWorker) Work(ctx context.Context, job *river.Job[jobs_args.MediaAssetProcessJob]) error {
+	return nil
+}
+
 func testJobWorkersProvider() container.ProviderContainer {
 	return container.ProviderContainer{
 		Provider: func(opts ...opt.Option) error {
@@ -47,6 +55,11 @@ func testJobWorkersProvider() container.ProviderContainer {
 				if err := river.AddWorkerSafely(__job.Workers, obj); err != nil {
 					return nil, err
 				}
+
+				obj2 := &mediaAssetProcessTestWorker{}
+				if err := river.AddWorkerSafely(__job.Workers, obj2); err != nil {
+					return nil, err
+				}
 				return obj, nil
 			}, atom.GroupInitial)
 		},
diff --git a/backend/app/jobs/args/media_asset_process.go b/backend/app/jobs/args/media_asset_process.go
new file mode 100644
index 0000000..81fc7f6
--- /dev/null
+++ b/backend/app/jobs/args/media_asset_process.go
@@ -0,0 +1,38 @@
+package args
+
+import (
+	"quyun/v2/providers/job"
+
+	. "github.com/riverqueue/river"
+	"go.ipao.vip/atom/contracts"
+)
+
+var _ contracts.JobArgs = MediaAssetProcessJob{}
+
+// MediaAssetProcessJob 表示“媒体资源处理”的一次性异步任务。
+//
+// 设计说明：
+// - 该任务用于将 media_assets 从 processing 推进到 ready/failed（由 worker 执行核心处理逻辑）。
+// - 幂等由 River Unique + 业务侧 DB 状态机共同保证（重复入队会被跳过或无副作用）。
+type MediaAssetProcessJob struct {
+	// TenantID 租户ID（用于多租户隔离与唯一性维度）。
+	TenantID int64 `json:"tenant_id" river:"unique"`
+	// AssetID 媒体资源ID（用于唯一性维度）。
+	AssetID int64 `json:"asset_id" river:"unique"`
+}
+
+func (MediaAssetProcessJob) Kind() string { return "media_asset_process" }
+
+func (a MediaAssetProcessJob) UniqueID() string { return a.Kind() }
+
+func (MediaAssetProcessJob) InsertOpts() InsertOpts {
+	return InsertOpts{
+		Queue:    job.QueueDefault,
+		Priority: job.PriorityDefault,
+		// 失败可重试；由 worker 判断不可重试的场景并 JobCancel。
+		MaxAttempts: 10,
+		UniqueOpts: UniqueOpts{
+			ByArgs: true,
+		},
+	}
+}
diff --git a/backend/app/jobs/media_asset_process.go b/backend/app/jobs/media_asset_process.go
new file mode 100644
index 0000000..da8582f
--- /dev/null
+++ b/backend/app/jobs/media_asset_process.go
@@ -0,0 +1,58 @@
+package jobs
+
+import (
+	"context"
+	"time"
+
+	jobs_args "quyun/v2/app/jobs/args"
+	"quyun/v2/app/services"
+
+	. "github.com/riverqueue/river"
+	log "github.com/sirupsen/logrus"
+)
+
+var _ Worker[jobs_args.MediaAssetProcessJob] = (*MediaAssetProcessJobWorker)(nil)
+
+// MediaAssetProcessJobWorker 负责执行媒体资源处理的异步处理（占位实现）。
+//
+// 当前实现为 stub：不对接外部转码/截图服务，仅回写 meta 并将状态置为 ready。
+//
+//	@provider(job)
+type MediaAssetProcessJobWorker struct {
+	WorkerDefaults[jobs_args.MediaAssetProcessJob]
+}
+
+func (w *MediaAssetProcessJobWorker) Work(ctx context.Context, job *Job[jobs_args.MediaAssetProcessJob]) error {
+	args := job.Args
+
+	attempt := 0
+	if job != nil && job.JobRow != nil {
+		attempt = job.Attempt
+	}
+
+	logger := log.WithFields(log.Fields{
+		"job_kind":  args.Kind(),
+		"tenant_id": args.TenantID,
+		"asset_id":  args.AssetID,
+		"attempt":   attempt,
+	})
+
+	logger.Info("jobs.media_asset_process.start")
+
+	_, err := services.MediaAsset.ProcessSuccess(ctx, args.TenantID, args.AssetID, map[string]any{
+		"process_pipeline": "stub",
+		"worker_attempt":   attempt,
+		"worker_ran_at":    time.Now().UTC().Format(time.RFC3339Nano),
+	}, time.Now().UTC())
+	if err != nil {
+		if services.IsMediaAssetProcessJobNonRetryableError(err) {
+			logger.WithError(err).Warn("jobs.media_asset_process.cancel")
+			return JobCancel(err)
+		}
+		logger.WithError(err).Warn("jobs.media_asset_process.retry")
+		return err
+	}
+
+	logger.Info("jobs.media_asset_process.ok")
+	return nil
+}
diff --git a/backend/app/jobs/media_asset_process_test.go b/backend/app/jobs/media_asset_process_test.go
new file mode 100644
index 0000000..a880ee5
--- /dev/null
+++ b/backend/app/jobs/media_asset_process_test.go
@@ -0,0 +1,85 @@
+package jobs
+
+import (
+	"database/sql"
+	"testing"
+	"time"
+
+	"quyun/v2/app/commands/testx"
+	jobs_args "quyun/v2/app/jobs/args"
+	"quyun/v2/app/services"
+	"quyun/v2/database"
+	"quyun/v2/database/models"
+	"quyun/v2/pkg/consts"
+
+	"github.com/riverqueue/river"
+	"github.com/riverqueue/river/rivertype"
+	. "github.com/smartystreets/goconvey/convey"
+	"github.com/stretchr/testify/suite"
+
+	_ "go.ipao.vip/atom"
+	"go.ipao.vip/atom/contracts"
+	"go.ipao.vip/gen/types"
+	"go.uber.org/dig"
+)
+
+type MediaAssetProcessJobSuiteInjectParams struct {
+	dig.In
+
+	DB       *sql.DB
+	Initials []contracts.Initial `group:"initials"` // nolint:structcheck
+}
+
+type MediaAssetProcessJobSuite struct {
+	suite.Suite
+	MediaAssetProcessJobSuiteInjectParams
+}
+
+func Test_MediaAssetProcessJob(t *testing.T) {
+	// 注意：testx.Default() 已内置一个测试用的 job worker 注册器，避免和 jobs.Provide 重复注册同 kind worker。
+	providers := testx.Default().With(services.Provide)
+
+	testx.Serve(providers, t, func(p MediaAssetProcessJobSuiteInjectParams) {
+		suite.Run(t, &MediaAssetProcessJobSuite{MediaAssetProcessJobSuiteInjectParams: p})
+	})
+}
+
+func (s *MediaAssetProcessJobSuite) Test_Work_ProcessingToReady() {
+	Convey("MediaAssetProcessJobWorker processing -> ready", s.T(), func() {
+		ctx := s.T().Context()
+		now := time.Now().UTC()
+		tenantID := int64(1)
+		userID := int64(2)
+
+		database.Truncate(ctx, s.DB, models.TableNameMediaAsset)
+
+		asset := &models.MediaAsset{
+			TenantID:  tenantID,
+			UserID:    userID,
+			Type:      consts.MediaAssetTypeVideo,
+			Status:    consts.MediaAssetStatusProcessing,
+			Provider:  "test",
+			Bucket:    "b",
+			ObjectKey: "k",
+			Meta:      types.JSON([]byte("{}")),
+			CreatedAt: now,
+			UpdatedAt: now,
+		}
+		So(asset.Create(ctx), ShouldBeNil)
+
+		worker := &MediaAssetProcessJobWorker{}
+		err := worker.Work(ctx, &river.Job[jobs_args.MediaAssetProcessJob]{
+			JobRow: &rivertype.JobRow{Attempt: 1},
+			Args:   jobs_args.MediaAssetProcessJob{TenantID: tenantID, AssetID: asset.ID},
+		})
+		So(err, ShouldBeNil)
+
+		tbl, query := models.MediaAssetQuery.QueryContext(ctx)
+		got, err := query.Where(
+			tbl.TenantID.Eq(tenantID),
+			tbl.ID.Eq(asset.ID),
+		).First()
+		So(err, ShouldBeNil)
+		So(got.Status, ShouldEqual, consts.MediaAssetStatusReady)
+	})
+}
diff --git a/backend/app/jobs/provider.gen.go b/backend/app/jobs/provider.gen.go
index 82ee41c..474a4fc 100755
--- a/backend/app/jobs/provider.gen.go
+++ b/backend/app/jobs/provider.gen.go
@@ -11,6 +11,18 @@ import (
 )
 
 func Provide(opts ...opt.Option) error {
+	if err := container.Container.Provide(func(
+		__job *job.Job,
+	) (contracts.Initial, error) {
+		obj := &MediaAssetProcessJobWorker{}
+		if err := river.AddWorkerSafely(__job.Workers, obj); err != nil {
+			return nil, err
+		}
+
+		return obj, nil
+	}, atom.GroupInitial); err != nil {
+		return err
+	}
 	if err := container.Container.Provide(func(
 		__job *job.Job,
 	) (contracts.Initial, error) {
diff --git a/backend/app/services/media_asset.go b/backend/app/services/media_asset.go
index 1433d0e..b6f7eda 100644
--- a/backend/app/services/media_asset.go
+++ b/backend/app/services/media_asset.go
@@ -12,9 +12,11 @@ import (
 
 	"quyun/v2/app/errorx"
 	tenant_dto "quyun/v2/app/http/tenant/dto"
+	jobs_args "quyun/v2/app/jobs/args"
 	"quyun/v2/app/requests"
 	"quyun/v2/database/models"
 	"quyun/v2/pkg/consts"
+	provider_job "quyun/v2/providers/job"
 
 	pkgerrors "github.com/pkg/errors"
 	"github.com/samber/lo"
@@ -29,7 +31,30 @@ import (
 // mediaAsset 提供媒体资源上传初始化等能力（上传/处理链路会在后续里程碑补齐）。
 //
 //	@provider
-type mediaAsset struct{}
+type mediaAsset struct {
+	job *provider_job.Job
+}
+
+func IsMediaAssetProcessJobNonRetryableError(err error) bool {
+	var appErr *errorx.AppError
+	if !errors.As(err, &appErr) {
+		return false
+	}
+	switch appErr.Code {
+	case errorx.CodeInvalidParameter,
+		errorx.CodeRecordNotFound,
+		errorx.CodeStatusConflict,
+		errorx.CodePreconditionFailed,
+		errorx.CodePermissionDenied:
+		return true
+	default:
+		return false
+	}
+}
+
+func (s *mediaAsset) enqueueMediaAssetProcessJob(args jobs_args.MediaAssetProcessJob) error {
+	return s.job.Add(args)
+}
 
 func mediaAssetTransitionAllowed(from, to consts.MediaAssetStatus) bool {
 	switch from {
@@ -218,7 +243,11 @@ func (s *mediaAsset) AdminUploadComplete(
 		"asset_id":  assetID,
 	}).Info("services.media_asset.admin.upload_complete")
 
-	var out models.MediaAsset
+	var (
+		out         models.MediaAsset
+		needEnqueue bool
+		enqueueArgs jobs_args.MediaAssetProcessJob
+	)
 
 	err := models.Q.Transaction(func(tx *models.Query) error {
 		tbl, query := tx.MediaAsset.QueryContext(ctx)
@@ -241,11 +270,16 @@ func (s *mediaAsset) AdminUploadComplete(
 			return errorx.ErrPreconditionFailed.WithMsg("media asset deleted")
 		}
 
-		// 幂等：重复 upload_complete 时返回现态。
+		// 幂等：重复 upload_complete 时返回现态；但只要处于 processing，就允许再次触发入队（用于“上次入队失败”的补偿重试）。
 		switch m.Status {
-		case consts.MediaAssetStatusProcessing, consts.MediaAssetStatusReady, consts.MediaAssetStatusFailed:
+		case consts.MediaAssetStatusReady, consts.MediaAssetStatusFailed:
 			out = *m
 			return nil
+		case consts.MediaAssetStatusProcessing:
+			out = *m
+			needEnqueue = true
+			enqueueArgs = jobs_args.MediaAssetProcessJob{TenantID: tenantID, AssetID: assetID}
+			return nil
 		case consts.MediaAssetStatusUploaded:
 			// allowed
 		default:
@@ -294,19 +328,32 @@ func (s *mediaAsset) AdminUploadComplete(
 		m.UpdatedAt = now
 		out = *m
 
-		// 触发异步处理（当前为 stub）：后续接入队列/任务系统时在此处落任务并保持幂等。
-		logrus.WithFields(logrus.Fields{
-			"tenant_id": tenantID,
-			"user_id":   operatorUserID,
-			"asset_id":  assetID,
-			"status":    m.Status,
-		}).Info("services.media_asset.process.triggered")
+		needEnqueue = true
+		enqueueArgs = jobs_args.MediaAssetProcessJob{TenantID: tenantID, AssetID: assetID}
 
 		return nil
 	})
 	if err != nil {
 		return nil, err
 	}
+
+	if needEnqueue {
+		// 注意：River 的唯一约束会将重复入队“软跳过”，因此这里允许多次触发以补偿偶发入队失败。
+		if err := s.enqueueMediaAssetProcessJob(enqueueArgs); err != nil {
+			logrus.WithFields(logrus.Fields{
+				"tenant_id": tenantID,
+				"user_id":   operatorUserID,
+				"asset_id":  assetID,
+			}).WithError(err).Warn("services.media_asset.process.enqueue_failed")
+			return nil, err
+		}
+		logrus.WithFields(logrus.Fields{
+			"tenant_id": tenantID,
+			"user_id":   operatorUserID,
+			"asset_id":  assetID,
+		}).Info("services.media_asset.process.enqueued")
+	}
+
 	return &out, nil
 }
 
diff --git a/backend/app/services/media_asset_test.go b/backend/app/services/media_asset_test.go
index 94511f8..666d247 100644
--- a/backend/app/services/media_asset_test.go
+++ b/backend/app/services/media_asset_test.go
@@ -9,6 +9,7 @@ import (
 	"quyun/v2/app/commands/testx"
 	"quyun/v2/app/errorx"
 	tenant_dto "quyun/v2/app/http/tenant/dto"
+	jobs_args "quyun/v2/app/jobs/args"
 	"quyun/v2/database"
 	"quyun/v2/database/models"
 	"quyun/v2/pkg/consts"
@@ -109,3 +110,49 @@ func (s *MediaAssetTestSuite) Test_AdminUploadInit_VariantAndSource() {
 		})
 	})
 }
+
+func (s *MediaAssetTestSuite) Test_AdminUploadComplete_EnqueueAndProcess() {
+	Convey("MediaAsset.AdminUploadComplete enqueue job and worker process", s.T(), func() {
+		ctx := s.T().Context()
+		now := time.Now().UTC()
+		tenantID := int64(1)
+		userID := int64(2)
+
+		database.Truncate(ctx, s.DB, "river_job", models.TableNameMediaAsset)
+
+		asset := &models.MediaAsset{
+			TenantID:  tenantID,
+			UserID:    userID,
+			Type:      consts.MediaAssetTypeVideo,
+			Status:    consts.MediaAssetStatusUploaded,
+			Provider:  "test",
+			Bucket:    "b",
+			ObjectKey: "k",
+			Meta:      []byte("{}"),
+			CreatedAt: now,
+			UpdatedAt: now,
+		}
+		So(asset.Create(ctx), ShouldBeNil)
+
+		Convey("首次 upload_complete：uploaded -> processing，并入队一次", func() {
+			out, err := MediaAsset.AdminUploadComplete(ctx, tenantID, userID, asset.ID, nil, now)
+			So(err, ShouldBeNil)
+			So(out.Status, ShouldEqual, consts.MediaAssetStatusProcessing)
+
+			var cnt int
+			err = s.DB.QueryRowContext(ctx, "SELECT COUNT(1) FROM river_job WHERE kind = $1", jobs_args.MediaAssetProcessJob{}.Kind()).Scan(&cnt)
+			So(err, ShouldBeNil)
+			So(cnt, ShouldEqual, 1)
+
+			Convey("重复 upload_complete：仍可触发入队，但不会产生重复任务", func() {
+				out2, err := MediaAsset.AdminUploadComplete(ctx, tenantID, userID, asset.ID, nil, now.Add(1*time.Second))
+				So(err, ShouldBeNil)
+				So(out2.Status, ShouldEqual, consts.MediaAssetStatusProcessing)
+
+				err = s.DB.QueryRowContext(ctx, "SELECT COUNT(1) FROM river_job WHERE kind = $1", jobs_args.MediaAssetProcessJob{}.Kind()).Scan(&cnt)
+				So(err, ShouldBeNil)
+				So(cnt, ShouldEqual, 1)
+			})
+		})
+	})
+}
diff --git a/backend/app/services/provider.gen.go b/backend/app/services/provider.gen.go
index 2f2214e..5f92244 100755
--- a/backend/app/services/provider.gen.go
+++ b/backend/app/services/provider.gen.go
@@ -30,8 +30,12 @@ func Provide(opts ...opt.Option) error {
 	}); err != nil {
 		return err
 	}
-	if err := container.Container.Provide(func() (*mediaAsset, error) {
-		obj := &mediaAsset{}
+	if err := container.Container.Provide(func(
+		job *provider_job.Job,
+	) (*mediaAsset, error) {
+		obj := &mediaAsset{
+			job: job,
+		}
 
 		return obj, nil
 	}); err != nil {