diff --git a/apps/api/migrations/043_edl_projects.sql b/apps/api/migrations/043_edl_projects.sql
new file mode 100644
index 0000000..c651e2c
--- /dev/null
+++ b/apps/api/migrations/043_edl_projects.sql
@@ -0,0 +1,56 @@
+-- 043: EDL projects — the intake half of the editor-v2 assemble feature.
+--
+-- edl_projects stores a validated editor timeline (the EdlProject shape from
+-- apps/api/src/media-control/edl.ts) as jsonb. The api validates strictly
+-- (closed enums, integer ms, unknown keys rejected, filtergraph metacharacters
+-- blocked in card text) before anything is written; the media-worker
+-- re-validates the job's input_json on the assemble lane (044).
+--
+-- video_processing_jobs gains kind 'assemble' (044's claim already admits it)
+-- and video_asset_id becomes nullable: an assemble job is queued from an EDL
+-- project, not a single source asset, so there is no asset to point at yet —
+-- the produced output is a derived video_assets row like compose/mix.
+--
+-- RLS / NULLIF / reject_workspace_change / sp_app grants follow the
+-- 001/008/021/026/029 conventions: no app.workspace_id => NULL => no rows;
+-- FORCE binds sp_app too. The jsonb column is content, not a schema facet:
+-- the authoritative typed validation is app-side (edl.ts).
+
+BEGIN;
+
+CREATE TABLE edl_projects (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  workspace_id uuid NOT NULL REFERENCES workspaces(id) ON DELETE CASCADE ON UPDATE RESTRICT,
+  group_id uuid NULL,
+  project jsonb NOT NULL,
+  created_by uuid NULL,
+  created_at timestamptz NOT NULL DEFAULT now(),
+  updated_at timestamptz NOT NULL DEFAULT now(),
+  UNIQUE (workspace_id, id)
+);
+
+-- Tenant-pinned reference target (029 style): the composite UNIQUE lets child
+-- rows pin (id, workspace_id) so an EDL project can never point across tenants.
+CREATE INDEX edl_projects_ws_updated_idx ON edl_projects (workspace_id, updated_at DESC);
+
+CREATE TRIGGER trg_edl_projects_ws_immutable BEFORE UPDATE ON edl_projects
+  FOR EACH ROW EXECUTE FUNCTION reject_workspace_change();
+
+ALTER TABLE edl_projects ENABLE ROW LEVEL SECURITY;
+ALTER TABLE edl_projects FORCE ROW LEVEL SECURITY;
+
+CREATE POLICY tenant_isolation ON edl_projects
+  USING (workspace_id = NULLIF(current_setting('app.workspace_id', true), '')::uuid)
+  WITH CHECK (workspace_id = NULLIF(current_setting('app.workspace_id', true), '')::uuid);
+
+GRANT SELECT, INSERT, UPDATE, DELETE ON edl_projects TO sp_app;
+
+-- The assemble lane: widen the 039 kind CHECK so an undecodable row cannot
+-- exist, and let an assemble job carry no source asset yet.
+ALTER TABLE video_processing_jobs DROP CONSTRAINT video_processing_jobs_kind_check;
+ALTER TABLE video_processing_jobs
+  ADD CONSTRAINT video_processing_jobs_kind_check
+  CHECK (kind IN ('probe', 'compose', 'mix', 'assemble'));
+ALTER TABLE video_processing_jobs ALTER COLUMN video_asset_id DROP NOT NULL;
+
+COMMIT;
diff --git a/apps/api/src/app.module.ts b/apps/api/src/app.module.ts
index 985d1ff..1ed834c 100644
--- a/apps/api/src/app.module.ts
+++ b/apps/api/src/app.module.ts
@@ -23,6 +23,8 @@ import { VideoService } from "./video/video.service";
 import { ChunkedUploadService } from "./video/chunked-upload.js";
 import { LiveMonitorModule } from "./live-monitor/live-monitor.module";
 import { MediaControlModule } from "./media-control/media-control.module";
+import { EdlController } from "./media-control/edl.controller";
+import { EdlService } from "./media-control/edl.service";
 import { ProductionModule } from "./production/production.module";
 import { RealtimeModule } from "./realtime/realtime.module";
 import { LiveChatModule } from "./live-chat/live-chat.module";
@@ -59,6 +61,7 @@ import { MediaModule } from "./media/media.module.js";
     VideoController,
     GroupsController,
     AnalyticsController,
+    EdlController,
     SettingsController,
     BrandingController,
     PublicBrandingController,
@@ -67,6 +70,6 @@ import { MediaModule } from "./media/media.module.js";
     { provide: PublishingExecutionRepository, useFactory: () => new PublishingExecutionRepository(pool) },
     TemporalWorkflowStarter,
     { provide: PUBLISHING_DEPENDENCIES, inject: [PublishingExecutionRepository, TemporalWorkflowStarter, ApprovalGateService], useFactory: (repository: PublishingExecutionRepository, workflowStarter: TemporalWorkflowStarter, approvalGate: ApprovalGateService) => ({ repository, workflowStarter, approvalGate, tenantTransaction: withTenant, assertReady: () => assertPublishingSchema(pool) }) },
-    PublishingService, ApprovalGateService, AuthService, ConnectionsService, TeamService, InviteLinkService, AuditQueryService, VideoService, ChunkedUploadService, GroupsService, SnapshotService, SettingsService, BrandingService],
+    PublishingService, ApprovalGateService, AuthService, ConnectionsService, TeamService, InviteLinkService, AuditQueryService, VideoService, ChunkedUploadService, GroupsService, SnapshotService, SettingsService, BrandingService, EdlService],
 })
 export class AppModule {}
diff --git a/apps/api/src/media-control/edl.controller.ts b/apps/api/src/media-control/edl.controller.ts
new file mode 100644
index 0000000..93abc04
--- /dev/null
+++ b/apps/api/src/media-control/edl.controller.ts
@@ -0,0 +1,70 @@
+import { BadRequestException, Body, Controller, Get, Inject, Param, Patch, Post, Req, UseGuards } from "@nestjs/common";
+import type { Request } from "express";
+import { parseId, requireObject, requireSession } from "../http/validation.js";
+import { RbacGuard, RequirePermission, type AuthenticatedRequest } from "../rbac/rbac.guard.js";
+import { validateEdlProject } from "./edl.js";
+import { EdlService, type EdlLane, type EdlProjectRecord, type EdlProjectView } from "./edl.service.js";
+
+/**
+ * EDL projects (editor-v2 intake): the timeline is the resource, the render is
+ * a queued assemble job. Bodies are parsed with validateEdlProject — closed
+ * enums, integer ms, unknown keys rejected — before anything touches the DB.
+ */
+@Controller("video/edl")
+@UseGuards(RbacGuard)
+export class EdlController {
+  constructor(@Inject(EdlService) private readonly edl: EdlService) {}
+
+  @Post()
+  @RequirePermission("media.manage")
+  create(
+    @Req() request: Request & AuthenticatedRequest,
+    @Body() body: unknown,
+  ): Promise<EdlProjectRecord> {
+    const session = requireSession(request);
+    const project = validateEdlProject(requireObject(body, "body").project);
+    return this.edl.create(session.workspaceId, project, session.userId);
+  }
+
+  @Patch(":id")
+  @RequirePermission("media.manage")
+  update(
+    @Req() request: Request & AuthenticatedRequest,
+    @Param("id") id: string,
+    @Body() body: unknown,
+  ): Promise<EdlProjectRecord> {
+    const session = requireSession(request);
+    const project = validateEdlProject(requireObject(body, "body").project);
+    return this.edl.update(session.workspaceId, parseId(id, "id"), project, session.userId);
+  }
+
+  @Get(":id")
+  @RequirePermission("media.view")
+  get(
+    @Req() request: Request & AuthenticatedRequest,
+    @Param("id") id: string,
+  ): Promise<EdlProjectView> {
+    return this.edl.get(requireSession(request).workspaceId, parseId(id, "id"));
+  }
+
+  @Post(":id/render")
+  @RequirePermission("media.manage")
+  render(
+    @Req() request: Request & AuthenticatedRequest,
+    @Param("id") id: string,
+    @Body() body: unknown,
+  ): Promise<{ jobId: string }> {
+    const session = requireSession(request);
+    const input = requireObject(body, "body");
+    const lane: EdlLane | undefined =
+      input.lane === undefined || input.lane === null ? undefined : parseLane(input.lane);
+    return this.edl.render(session.workspaceId, parseId(id, "id"), lane, session.userId);
+  }
+}
+
+function parseLane(value: unknown): EdlLane {
+  if (value !== "local" && value !== "remote") {
+    throw new BadRequestException("lane must be one of local, remote");
+  }
+  return value;
+}
diff --git a/apps/api/src/media-control/edl.service.ts b/apps/api/src/media-control/edl.service.ts
new file mode 100644
index 0000000..5e59bdf
--- /dev/null
+++ b/apps/api/src/media-control/edl.service.ts
@@ -0,0 +1,174 @@
+import { Inject, Injectable, NotFoundException, Optional } from "@nestjs/common";
+import type { PoolClient } from "pg";
+import { appendTenantAudit, type AuditEvent } from "../audit/audit.service.js";
+import { withTenant } from "../db/client.js";
+import { isUuid } from "../http/validation.js";
+import type { EdlProject } from "./edl.js";
+
+type TenantTransaction = <T>(workspaceId: string, fn: (client: PoolClient) => Promise<T>) => Promise<T>;
+type AuditAppender = (workspaceId: string, event: AuditEvent) => Promise<string>;
+
+export interface EdlServiceDependencies {
+  tenantTransaction: TenantTransaction;
+  appendAudit: AuditAppender;
+}
+
+export const EDL_SERVICE_DEPENDENCIES = Symbol("EDL_SERVICE_DEPENDENCIES");
+
+const DEFAULT_DEPENDENCIES: EdlServiceDependencies = {
+  tenantTransaction: withTenant,
+  appendAudit: appendTenantAudit,
+};
+
+export interface EdlProjectRecord {
+  id: string;
+  project: EdlProject;
+}
+
+export interface EdlJobSummary {
+  id: string;
+  state: string;
+  progressPercent: number;
+}
+
+export interface EdlProjectView extends EdlProjectRecord {
+  job: EdlJobSummary | null;
+}
+
+export type EdlLane = "local" | "remote";
+
+/**
+ * EDL project persistence (editor-v2 intake). Every read/write runs inside the
+ * caller's tenant transaction (withTenant), so RLS pins the rows to the
+ * session's workspace and the audit trail appends to the tenant chain.
+ * The project is only ever stored after validateEdlProject accepted it.
+ */
+@Injectable()
+export class EdlService {
+  private readonly dependencies: EdlServiceDependencies;
+
+  constructor(@Optional() @Inject(EDL_SERVICE_DEPENDENCIES) dependencies?: Partial<EdlServiceDependencies>) {
+    this.dependencies = { ...DEFAULT_DEPENDENCIES, ...dependencies };
+  }
+
+  async create(workspaceId: string, project: EdlProject, actorUserId: string): Promise<EdlProjectRecord> {
+    if (!isUuid(workspaceId)) throw new NotFoundException("workspace not found");
+    const created = await this.dependencies.tenantTransaction(workspaceId, (client) =>
+      client
+        .query(
+          `INSERT INTO edl_projects (workspace_id, project, created_by)
+           VALUES ($1, $2::jsonb, $3) RETURNING id, project`,
+          [workspaceId, JSON.stringify(project), actorUserId],
+        )
+        .then((result) => {
+          const row = result.rows[0];
+          if (row === undefined) throw new Error("database did not return the created EDL project");
+          return { id: String(row.id), project: row.project as EdlProject };
+        }),
+    );
+    await this.audit(workspaceId, "edl.saved", created.id, { actorUserId, operation: "create" });
+    return created;
+  }
+
+  async update(workspaceId: string, id: string, project: EdlProject, actorUserId: string): Promise<EdlProjectRecord> {
+    if (!isUuid(workspaceId) || !isUuid(id)) throw new NotFoundException("EDL project not found");
+    const updated = await this.dependencies.tenantTransaction(workspaceId, (client) =>
+      client
+        .query(
+          `UPDATE edl_projects
+           SET project = $2::jsonb, updated_at = now()
+           WHERE id = $3
+           RETURNING id, project`,
+          [workspaceId, JSON.stringify(project), id],
+        )
+        .then((result) => {
+          const row = result.rows[0];
+          if (row === undefined) throw new NotFoundException(`EDL project ${id} not found`);
+          return { id: String(row.id), project: row.project as EdlProject };
+        }),
+    );
+    await this.audit(workspaceId, "edl.saved", updated.id, { actorUserId, operation: "update" });
+    return updated;
+  }
+
+  async get(workspaceId: string, id: string): Promise<EdlProjectView> {
+    if (!isUuid(workspaceId) || !isUuid(id)) throw new NotFoundException("EDL project not found");
+    return this.dependencies.tenantTransaction(workspaceId, (client) =>
+      client
+        .query(
+          `SELECT e.id, e.project,
+                  j.id AS job_id, j.state AS job_state, j.progress_percent AS job_progress_percent
+           FROM edl_projects e
+           LEFT JOIN LATERAL (
+             SELECT id, state, progress_percent
+             FROM video_processing_jobs
+             WHERE input_json ->> 'edlProjectId' = e.id::text
+             ORDER BY created_at DESC, id DESC
+             LIMIT 1
+           ) j ON true
+           WHERE e.id = $1`,
+          [id],
+        )
+        .then((result) => {
+          const row = result.rows[0];
+          if (row === undefined) throw new NotFoundException(`EDL project ${id} not found`);
+          const job: EdlJobSummary | null =
+            row.job_id === null || row.job_id === undefined
+              ? null
+              : {
+                  id: String(row.job_id),
+                  state: String(row.job_state),
+                  progressPercent: typeof row.job_progress_percent === "number" ? row.job_progress_percent : Number(row.job_progress_percent),
+                };
+          return { id: String(row.id), project: row.project as EdlProject, job };
+        }),
+    );
+  }
+
+  /**
+   * Queue the assemble lane: the job row carries the validated project so the
+   * worker re-validates exactly what the api persisted (044's claim picks the
+   * row up by kind 'assemble'). video_asset_id stays NULL — the produced
+   * output is a derived video_assets row written when the job completes.
+   */
+  async render(workspaceId: string, id: string, lane: EdlLane | undefined, actorUserId: string): Promise<{ jobId: string }> {
+    if (!isUuid(workspaceId) || !isUuid(id)) throw new NotFoundException("EDL project not found");
+    const created = await this.dependencies.tenantTransaction(workspaceId, (client) => {
+      const found = client.query("SELECT project FROM edl_projects WHERE id = $1", [id]);
+      return found.then((result) => {
+        const row = result.rows[0];
+        if (row === undefined) throw new NotFoundException(`EDL project ${id} not found`);
+        const project = row.project as EdlProject;
+        const input = { edlProjectId: id, project, ...(lane === undefined ? {} : { lane }) };
+        return client
+          .query(
+            `INSERT INTO video_processing_jobs (workspace_id, video_asset_id, kind, state, input_json)
+             VALUES ($1, NULL, 'assemble', 'queued', $2::jsonb) RETURNING id`,
+            [workspaceId, JSON.stringify(input)],
+          )
+          .then((jobResult) => {
+            const jobRow = jobResult.rows[0];
+            if (jobRow === undefined) throw new Error("database did not return the queued assemble job");
+            return { jobId: String(jobRow.id) };
+          });
+      });
+    });
+    await this.audit(workspaceId, "edl.render", id, {
+      actorUserId,
+      jobId: created.jobId,
+      lane: lane ?? null,
+    });
+    return created;
+  }
+
+  private audit(workspaceId: string, action: "edl.saved" | "edl.render", targetId: string, diff: Record<string, unknown>): Promise<string> {
+    return this.dependencies.appendAudit(workspaceId, {
+      actorUserId: diff.actorUserId === null ? null : String(diff.actorUserId),
+      actorRole: "member",
+      action,
+      targetType: "edl_project",
+      targetId,
+      diff,
+    });
+  }
+}
diff --git a/apps/api/src/media-control/edl.test.ts b/apps/api/src/media-control/edl.test.ts
new file mode 100644
index 0000000..4f5fd6c
--- /dev/null
+++ b/apps/api/src/media-control/edl.test.ts
@@ -0,0 +1,172 @@
+import { BadRequestException } from "@nestjs/common";
+import { describe, expect, it } from "vitest";
+import {
+  EDL_CARD_MAX_MS,
+  EDL_CARD_MIN_MS,
+  EDL_CARD_TEXT_MAX,
+  EDL_LABEL_MAX,
+  EDL_MAX_ITEMS,
+  EDL_MAX_TOTAL_MS,
+  EDL_RESOLUTIONS,
+  validateEdlProject,
+} from "./edl.js";
+
+const ASSET_A = "10000000-0000-4000-8000-000000000001";
+const ASSET_B = "10000000-0000-4000-8000-000000000002";
+const AUDIO = "20000000-0000-4000-8000-000000000001";
+
+function clip(overrides: Record<string, unknown> = {}): Record<string, unknown> {
+  return { kind: "clip", assetId: ASSET_A, trimStartMs: 0, trimEndMs: 10_000, rotate: 0, volumeDb: 0, ...overrides };
+}
+function card(overrides: Record<string, unknown> = {}): Record<string, unknown> {
+  return { kind: "card", text: "Chapter one", durationMs: 5000, style: "title", ...overrides };
+}
+function overlayInput(overrides: Record<string, unknown> = {}): Record<string, unknown> {
+  return { overlayType: "lower_third", fields: { name: "A. Reporter" }, startMs: 0, endMs: 5000, ...overrides };
+}
+function voiceoverInput(overrides: Record<string, unknown> = {}): Record<string, unknown> {
+  return { audioAssetId: AUDIO, gainDb: -12, duckOriginal: true, offsetMs: 500, ...overrides };
+}
+function project(overrides: Record<string, unknown> = {}): Record<string, unknown> {
+  return {
+    version: 1,
+    aspect: "16:9",
+    fit: "cover",
+    fps: 30,
+    items: [clip()],
+    overlays: [],
+    voiceover: null,
+    outputLabel: "EDL test",
+    ...overrides,
+  };
+}
+
+function rejectError(value: unknown): BadRequestException {
+  try {
+    validateEdlProject(value);
+  } catch (error) {
+    expect(error).toBeInstanceOf(BadRequestException);
+    return error as BadRequestException;
+  }
+  throw new Error(`validateEdlProject accepted ${JSON.stringify(value)}`);
+}
+
+function messageOf(error: BadRequestException): string {
+  const response = error.getResponse();
+  if (typeof response === "string") return response;
+  const record = response as Record<string, unknown>;
+  if (typeof record.message === "string") return record.message;
+  if (Array.isArray(record.message)) return record.message.join(" ");
+  return String(response);
+}
+
+/** Each rejection names the offending field path in the 400 message. */
+const rejections: Array<[string, unknown, RegExp]> = [
+  // -- closed enums -------------------------------------------------------
+  ["version 2", project({ version: 2 }), /project\.version must be 1/],
+  ["aspect 4:3", project({ aspect: "4:3" }), /project\.aspect must be one of 16:9, 9:16/],
+  ["fit fill", project({ fit: "fill" }), /project\.fit must be one of cover, contain/],
+  ["fps 25", project({ fps: 25 }), /project\.fps must be 30/],
+  ["clip rotate 45", project({ items: [clip({ rotate: 45 })] }), /items\[0\]\.rotate must be one of 0, 90, 180, 270/],
+  ["card style lower", project({ items: [card({ style: "lower" })] }), /items\[0\]\.style must be one of title, chapter/],
+  ["overlay type watermark", project({ overlays: [overlayInput({ overlayType: "watermark" })] }), /overlays\[0\]\.overlayType must be one of lower_third, chyron, logo/],
+  // -- unknown keys are rejected, never ignored ---------------------------
+  ["unknown project key", project({ filter: "drawtext" }), /project\.filter is not allowed/],
+  ["unknown clip key", project({ items: [clip({ speed: 2 })] }), /items\[0\]\.speed is not allowed/],
+  ["unknown card key", project({ items: [card({ font: "sans" })] }), /items\[0\]\.font is not allowed/],
+  ["unknown overlay key", project({ overlays: [overlayInput({ font: "sans" })] }), /overlays\[0\]\.font is not allowed/],
+  ["unknown voiceover key", project({ voiceover: voiceoverInput({ streamKey: "x" }) }), /voiceover\.streamKey is not allowed/],
+  // -- items bounds ---------------------------------------------------------
+  ["empty items", project({ items: [] }), /project\.items must contain at least 1 item/],
+  ["51 items", project({ items: Array.from({ length: 51 }, () => clip()) }), /project\.items allows at most 50 items/],
+  // -- total duration bound --------------------------------------------------
+  ["total 15 min + 1 ms", project({ items: [clip({ trimStartMs: 0, trimEndMs: 900_001 })] }), /total duration must be at most 900000 ms/],
+  // -- clip bounds -------------------------------------------------------------
+  ["clip trimStartMs -1", project({ items: [clip({ trimStartMs: -1 })] }), /items\[0\]\.trimStartMs must be at least 0 ms/],
+  ["clip trimEndMs 0 (trimStartMs 0)", project({ items: [clip({ trimEndMs: 0 })] }), /project\.items\[0\]\.trimEndMs must be greater than project\.items\[0\]\.trimStartMs/],
+  ["clip trimEndMs == trimStartMs", project({ items: [clip({ trimStartMs: 1000, trimEndMs: 1000 })] }), /project\.items\[0\]\.trimEndMs must be greater than project\.items\[0\]\.trimStartMs/],
+  ["clip trimEndMs < trimStartMs", project({ items: [clip({ trimStartMs: 2000, trimEndMs: 1000 })] }), /project\.items\[0\]\.trimEndMs must be greater than project\.items\[0\]\.trimStartMs/],
+  ["clip trimStartMs not an integer", project({ items: [clip({ trimStartMs: 10.5 })] }), /items\[0\]\.trimStartMs must be an integer number of milliseconds/],
+  ["clip volumeDb -39", project({ items: [clip({ volumeDb: -39 })] }), /items\[0\]\.volumeDb must be between -36 and 6 dB/],
+  ["clip volumeDb 9", project({ items: [clip({ volumeDb: 9 })] }), /items\[0\]\.volumeDb must be between -36 and 6 dB/],
+  ["clip volumeDb 1 (not a 3 dB step)", project({ items: [clip({ volumeDb: 1 })] }), /items\[0\]\.volumeDb must be a multiple of 3 dB/],
+  // -- card bounds -------------------------------------------------------------
+  ["card durationMs 999", project({ items: [card({ durationMs: 999 })] }), /items\[0\]\.durationMs must be at least 1000 ms/],
+  ["card durationMs 10001", project({ items: [card({ durationMs: 10_001 })] }), /items\[0\]\.durationMs must be at most 10000 ms/],
+  ["card text 121 chars", project({ items: [card({ text: "x".repeat(121) })] }), /items\[0\]\.text must be at most 120 characters/],
+  // -- overlay bounds -----------------------------------------------------------
+  ["overlay startMs -1", project({ overlays: [overlayInput({ startMs: -1 })] }), /overlays\[0\]\.startMs must be at least 0 ms/],
+  ["overlay endMs 0", project({ overlays: [overlayInput({ startMs: 0, endMs: 0 })] }), /project\.overlays\[0\]\.endMs must be greater than project\.overlays\[0\]\.startMs/],
+  ["overlay endMs < startMs", project({ overlays: [overlayInput({ startMs: 5000, endMs: 4000 })] }), /project\.overlays\[0\]\.endMs must be greater than project\.overlays\[0\]\.startMs/],
+  ["overlay fields value not a string", project({ overlays: [overlayInput({ fields: { name: 42 } })] }), /overlays\[0\]\.fields\.name must be a string/],
+  // -- voiceover bounds -----------------------------------------------------------
+  ["voiceover gainDb -39", project({ voiceover: voiceoverInput({ gainDb: -39 }) }), /voiceover\.gainDb must be between -36 and 6 dB/],
+  ["voiceover gainDb 1 (not a 3 dB step)", project({ voiceover: voiceoverInput({ gainDb: 1 }) }), /voiceover\.gainDb must be a multiple of 3 dB/],
+  ["voiceover offsetMs -1", project({ voiceover: voiceoverInput({ offsetMs: -1 }) }), /voiceover\.offsetMs must be at least 0 ms/],
+  ["voiceover duckOriginal not a boolean", project({ voiceover: voiceoverInput({ duckOriginal: "yes" }) }), /voiceover\.duckOriginal must be a boolean/],
+  // -- output label bound -----------------------------------------------------------
+  ["outputLabel 81 chars", project({ outputLabel: "x".repeat(81) }), /outputLabel must be at most 80 characters/],
+  // -- uuids ---------------------------------------------------------------------------
+  ["clip assetId not a uuid", project({ items: [clip({ assetId: "not-a-uuid" })] }), /items\[0\]\.assetId must be a UUID/],
+  ["voiceover audioAssetId not a uuid", project({ voiceover: voiceoverInput({ audioAssetId: "nope" }) }), /voiceover\.audioAssetId must be a UUID/],
+];
+
+describe("validateEdlProject", () => {
+  it("exports the spec'd resolution table", () => {
+    expect(EDL_RESOLUTIONS).toEqual({ "16:9": { w: 1280, h: 720 }, "9:16": { w: 1080, h: 1920 } });
+  });
+
+  it("accepts the minimal project and canonicalizes it", () => {
+    expect(validateEdlProject(project())).toEqual(project());
+  });
+
+  it("accepts a full project (both aspects, all item/overlay kinds, voiceover)", () => {
+    const full = project({
+      aspect: "9:16",
+      fit: "contain",
+      items: [
+        clip({ assetId: ASSET_B, trimStartMs: 100, trimEndMs: 11_000, rotate: 90, volumeDb: -6 }),
+        card({ text: "Chapter one", durationMs: 10_000, style: "chapter" }),
+      ],
+      overlays: [
+        overlayInput(),
+        overlayInput({ overlayType: "logo", fields: {}, startMs: 5_000, endMs: 11_100 }),
+        overlayInput({ overlayType: "chyron", fields: { headline: "Market close" }, startMs: 2_000, endMs: 8_000 }),
+      ],
+      voiceover: voiceoverInput(),
+      outputLabel: "Full EDL",
+    });
+    expect(validateEdlProject(full)).toEqual(full);
+  });
+
+  it("accepts every boundary value", () => {
+    expect(validateEdlProject(project({ items: Array.from({ length: 50 }, () => clip()) }))).toBeTruthy(); // 50 items
+    expect(validateEdlProject(project({ items: [clip({ trimStartMs: 0, trimEndMs: 900_000 })] }))).toBeTruthy(); // exactly 15 min
+    expect(validateEdlProject(project({ items: [card({ durationMs: 1000 })] }))).toBeTruthy(); // card floor
+    expect(validateEdlProject(project({ items: [card({ durationMs: 10_000 })] }))).toBeTruthy(); // card ceiling
+    expect(validateEdlProject(project({ items: [card({ text: "x".repeat(120) })] }))).toBeTruthy(); // card text ceiling
+    expect(validateEdlProject(project({ outputLabel: "x".repeat(80) }))).toBeTruthy(); // label ceiling
+    expect(validateEdlProject(project({ items: [clip({ volumeDb: -36 })] }))).toBeTruthy(); // dB floor
+    expect(validateEdlProject(project({ items: [clip({ volumeDb: 6 })] }))).toBeTruthy(); // dB ceiling
+    expect(validateEdlProject(project({ items: [clip({ trimStartMs: 0 })] }))).toBeTruthy(); // trimStart floor
+    expect(validateEdlProject(project({ overlays: [overlayInput({ startMs: 0, endMs: 1 })] }))).toBeTruthy(); // overlay floor
+    expect(validateEdlProject(project({ voiceover: voiceoverInput({ gainDb: -36, offsetMs: 0 }) }))).toBeTruthy(); // voiceover floors
+  });
+
+  it("throws BadRequestException (HTTP 400) with the field path in the message", () => {
+    const error = rejectError(project({ fit: "fill" }));
+    expect(error.getStatus()).toBe(400);
+    expect(messageOf(error)).toContain("project.fit");
+  });
+
+  it.each(rejections)("%s", (_label, value, pattern) => {
+    expect(messageOf(rejectError(value))).toMatch(pattern);
+  });
+
+  it("rejects every filtergraph metacharacter in card text (produce-request.ts blocklist)", () => {
+    for (const character of [";", "[", "]", "'", '"', "`", "$", "\\", "{", "}", "=", ","]) {
+      const error = rejectError(project({ items: [card({ text: `ab${character}cd` })] }));
+      expect(messageOf(error)).toMatch(/items\[0\]\.text must not contain the filtergraph metacharacter/);
+    }
+  });
+});
diff --git a/apps/api/src/media-control/edl.ts b/apps/api/src/media-control/edl.ts
new file mode 100644
index 0000000..57aea2d
--- /dev/null
+++ b/apps/api/src/media-control/edl.ts
@@ -0,0 +1,167 @@
+import { BadRequestException } from "@nestjs/common";
+import { isUuid } from "../http/validation.js";
+
+/**
+ * EDL (editor timeline) projects: the editor-v2 intake shape.
+ *
+ * Everything accepted here is persisted verbatim into edl_projects.project
+ * and later reaches the media-worker's ffmpeg assemble lane, so the rules
+ * follow produce-request.ts: closed enums, exhaustive key allowlists (an
+ * unknown key is rejected, never ignored — that is what keeps a stray
+ * `movie=`/`enable=` field from riding into a filtergraph), integer
+ * milliseconds, bounded text, and no filtergraph or shell metacharacter
+ * inside card text.
+ *
+ * validateEdlProject is total: it either returns a canonicalized project
+ * (fixed key order, so the stored jsonb bytes are deterministic) or throws
+ * BadRequestException with a field path.
+ */
+
+export type EdlAspect = "16:9" | "9:16";
+export type EdlFit = "cover" | "contain";
+export const EDL_RESOLUTIONS = { "16:9": { w: 1280, h: 720 }, "9:16": { w: 1080, h: 1920 } } as const;
+
+export interface EdlClip { kind: "clip"; assetId: string; trimStartMs: number; trimEndMs: number; rotate: 0 | 90 | 180 | 270; volumeDb: number }
+export interface EdlCard { kind: "card"; text: string; durationMs: number; style: "title" | "chapter" }
+export type EdlItem = EdlClip | EdlCard;
+export interface EdlOverlay { overlayType: "lower_third" | "chyron" | "logo"; fields: Record<string, string>; startMs: number; endMs: number }
+export interface EdlVoiceover { audioAssetId: string; gainDb: number; duckOriginal: boolean; offsetMs: number }
+export interface EdlProject { version: 1; aspect: EdlAspect; fit: EdlFit; fps: 30; items: EdlItem[]; overlays: EdlOverlay[]; voiceover: EdlVoiceover | null; outputLabel: string }
+
+export const EDL_MAX_ITEMS = 50;
+export const EDL_MAX_TOTAL_MS = 900_000;
+export const EDL_CARD_MIN_MS = 1000;
+export const EDL_CARD_MAX_MS = 10_000;
+export const EDL_CARD_TEXT_MAX = 120;
+export const EDL_LABEL_MAX = 80;
+export const EDL_DB_MIN = -36;
+export const EDL_DB_MAX = 6;
+export const EDL_FPS = 30;
+
+/**
+ * Same blocklist as produce-request.ts: characters that change an ffmpeg
+ * filtergraph (`;` splits, `[`/`]` label pads, `,` separates args, `'` quotes,
+ * `=` sets an option) or a shell string. Card text is operator prose, so the
+ * check is a blocklist of these rather than a tight allowlist — prose keeps
+ * its punctuation and no metacharacter survives.
+ */
+const TEXT_FORBIDDEN = new Set([";", "[", "]", "'", '"', "`", "$", "\\", "{", "}", "=", ","]);
+
+function fail(message: string): never {
+  throw new BadRequestException(message);
+}
+
+/** Allowlist gate: unknown keys are rejected, never ignored. */
+function record(value: unknown, field: string, allowed: readonly string[]): Record<string, unknown> {
+  if (typeof value !== "object" || value === null || Array.isArray(value)) fail(`${field} must be an object`);
+  for (const key of Object.keys(value)) {
+    if (!allowed.includes(key)) fail(`${field}.${key} is not allowed`);
+  }
+  return value as Record<string, unknown>;
+}
+
+/** Integer milliseconds within an inclusive range. */
+function integerMs(value: unknown, field: string, min: number, max?: number): number {
+  if (typeof value !== "number" || !Number.isSafeInteger(value)) fail(`${field} must be an integer number of milliseconds`);
+  if (value < min) fail(`${field} must be at least ${min} ms`);
+  if (max !== undefined && value > max) fail(`${field} must be at most ${max} ms`);
+  return value;
+}
+
+/** dB values are stepped in 3 dB increments inside the -36..+6 window. */
+function dbValue(value: unknown, field: string): number {
+  if (typeof value !== "number" || !Number.isFinite(value)) fail(`${field} must be a number`);
+  if (value < EDL_DB_MIN || value > EDL_DB_MAX) fail(`${field} must be between ${EDL_DB_MIN} and ${EDL_DB_MAX} dB`);
+  if (value % 3 !== 0) fail(`${field} must be a multiple of 3 dB`);
+  return value;
+}
+
+function boundedText(value: unknown, field: string, max: number): string {
+  if (typeof value !== "string") fail(`${field} must be a string`);
+  if (value.length > max) fail(`${field} must be at most ${max} characters`);
+  for (const character of value) {
+    if (TEXT_FORBIDDEN.has(character)) fail(`${field} must not contain the filtergraph metacharacter ${JSON.stringify(character)}`);
+  }
+  return value;
+}
+
+function item(value: unknown, field: string): EdlItem {
+  if (typeof value !== "object" || value === null || Array.isArray(value)) fail(`${field} must be an object`);
+  const kind = (value as Record<string, unknown>).kind;
+  if (kind === "clip") {
+    const clip = record(value, field, ["kind", "assetId", "trimStartMs", "trimEndMs", "rotate", "volumeDb"]);
+    const assetId = clip.assetId;
+    if (typeof assetId !== "string" || !isUuid(assetId)) fail(`${field}.assetId must be a UUID`);
+    const trimStartMs = integerMs(clip.trimStartMs, `${field}.trimStartMs`, 0);
+    const trimEndMs = integerMs(clip.trimEndMs, `${field}.trimEndMs`, 0);
+    if (trimEndMs <= trimStartMs) fail(`${field}.trimEndMs must be greater than ${field}.trimStartMs`);
+    const rotate = clip.rotate;
+    if (rotate !== 0 && rotate !== 90 && rotate !== 180 && rotate !== 270) fail(`${field}.rotate must be one of 0, 90, 180, 270`);
+    const volumeDb = dbValue(clip.volumeDb, `${field}.volumeDb`);
+    return { kind: "clip", assetId, trimStartMs, trimEndMs, rotate: rotate as 0 | 90 | 180 | 270, volumeDb };
+  }
+  if (kind === "card") {
+    const card = record(value, field, ["kind", "text", "durationMs", "style"]);
+    const style = card.style;
+    if (style !== "title" && style !== "chapter") fail(`${field}.style must be one of title, chapter`);
+    const text = boundedText(card.text, `${field}.text`, EDL_CARD_TEXT_MAX);
+    const durationMs = integerMs(card.durationMs, `${field}.durationMs`, EDL_CARD_MIN_MS, EDL_CARD_MAX_MS);
+    return { kind: "card", text, durationMs, style: style as "title" | "chapter" };
+  }
+  fail(`${field}.kind must be one of clip, card`);
+}
+
+function overlay(value: unknown, field: string): EdlOverlay {
+  const o = record(value, field, ["overlayType", "fields", "startMs", "endMs"]);
+  const overlayType = o.overlayType;
+  if (overlayType !== "lower_third" && overlayType !== "chyron" && overlayType !== "logo") {
+    fail(`${field}.overlayType must be one of lower_third, chyron, logo`);
+  }
+  if (typeof o.fields !== "object" || o.fields === null || Array.isArray(o.fields)) fail(`${field}.fields must be an object`);
+  const fields: Record<string, string> = {};
+  for (const [key, entry] of Object.entries(o.fields)) {
+    if (typeof entry !== "string") fail(`${field}.fields.${key} must be a string`);
+    fields[key] = entry;
+  }
+  const startMs = integerMs(o.startMs, `${field}.startMs`, 0);
+  const endMs = integerMs(o.endMs, `${field}.endMs`, 0);
+  if (endMs <= startMs) fail(`${field}.endMs must be greater than ${field}.startMs`);
+  return { overlayType: overlayType as "lower_third" | "chyron" | "logo", fields, startMs, endMs };
+}
+
+function voiceover(value: unknown, field: string): EdlVoiceover {
+  const v = record(value, field, ["audioAssetId", "gainDb", "duckOriginal", "offsetMs"]);
+  const audioAssetId = v.audioAssetId;
+  if (typeof audioAssetId !== "string" || !isUuid(audioAssetId)) fail(`${field}.audioAssetId must be a UUID`);
+  const gainDb = dbValue(v.gainDb, `${field}.gainDb`);
+  if (typeof v.duckOriginal !== "boolean") fail(`${field}.duckOriginal must be a boolean`);
+  const offsetMs = integerMs(v.offsetMs, `${field}.offsetMs`, 0);
+  return { audioAssetId, gainDb, duckOriginal: v.duckOriginal, offsetMs };
+}
+
+/** Parse and canonicalize an EDL project; throws BadRequestException on the first problem. */
+export function validateEdlProject(value: unknown): EdlProject {
+  const project = record(value, "project", ["version", "aspect", "fit", "fps", "items", "overlays", "voiceover", "outputLabel"]);
+  if (project.version !== 1) fail("project.version must be 1");
+  const aspect = project.aspect;
+  if (aspect !== "16:9" && aspect !== "9:16") fail(`project.aspect must be one of ${Object.keys(EDL_RESOLUTIONS).join(", ")}`);
+  const fit = project.fit;
+  if (fit !== "cover" && fit !== "contain") fail("project.fit must be one of cover, contain");
+  if (project.fps !== EDL_FPS) fail(`project.fps must be ${EDL_FPS}`);
+  if (!Array.isArray(project.items)) fail("project.items must be an array");
+  if (project.items.length < 1) fail("project.items must contain at least 1 item");
+  if (project.items.length > EDL_MAX_ITEMS) fail(`project.items allows at most ${EDL_MAX_ITEMS} items`);
+  const items = project.items.map((entry, index) => item(entry, `project.items[${index}]`));
+  let totalMs = 0;
+  for (const entry of items) {
+    totalMs += entry.kind === "clip" ? entry.trimEndMs - entry.trimStartMs : entry.durationMs;
+  }
+  if (totalMs > EDL_MAX_TOTAL_MS) fail(`project.items total duration must be at most ${EDL_MAX_TOTAL_MS} ms`);
+  if (project.overlays !== undefined && project.overlays !== null && !Array.isArray(project.overlays)) {
+    fail("project.overlays must be an array");
+  }
+  const overlays = (Array.isArray(project.overlays) ? project.overlays : []).map((entry, index) => overlay(entry, `project.overlays[${index}]`));
+  const voiceoverValue = project.voiceover === undefined || project.voiceover === null ? null : voiceover(project.voiceover, "project.voiceover");
+  const outputLabel = boundedText(project.outputLabel, "project.outputLabel", EDL_LABEL_MAX);
+  return { version: 1, aspect: aspect as EdlAspect, fit: fit as EdlFit, fps: 30, items, overlays, voiceover: voiceoverValue, outputLabel };
+}