diff --git a/app/(dashboard)/projects/[projectId]/project-content-client.tsx b/app/(dashboard)/projects/[projectId]/project-content-client.tsx
index a75edc2..54c844f 100644
--- a/app/(dashboard)/projects/[projectId]/project-content-client.tsx
+++ b/app/(dashboard)/projects/[projectId]/project-content-client.tsx
@@ -18,11 +18,18 @@ import {
   Download,
   Loader2,
   Trash2,
+  ChevronDown,
 } from 'lucide-react';
 import { toast } from 'sonner';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent } from '@/components/ui/card';
 import { Badge } from '@/components/ui/badge';
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+} from '@/components/ui/dropdown-menu';
 import {
   AlertDialog,
   AlertDialogAction,
@@ -167,13 +174,17 @@ export function ProjectContentClient({
   }, []);
 
   const startProjectDownload = useCallback(
-    async (videoIds?: string[]) => {
+    async (videoIds?: string[], options?: { allVersions?: boolean }) => {
       if (!canDownloadProject || isDownloading) return;
 
-      const query =
-        videoIds && videoIds.length > 0
-          ? `?videoIds=${encodeURIComponent(videoIds.join(','))}`
-          : '';
+      const searchParams = new URLSearchParams();
+      if (videoIds && videoIds.length > 0) {
+        searchParams.set('videoIds', videoIds.join(','));
+      }
+      if (options?.allVersions) {
+        searchParams.set('versions', 'all');
+      }
+      const query = searchParams.toString() ? `?${searchParams.toString()}` : '';
 
       setIsDownloading(true);
       try {
@@ -325,19 +336,27 @@ export function ProjectContentClient({
             )}
           </Button>
           {canDownloadProject && localVideos.length > 0 && !selectionMode && (
-            <Button
-              variant="outline"
-              size="sm"
-              onClick={() => startProjectDownload()}
-              disabled={isDownloading}
-            >
-              {isDownloading ? (
-                <Loader2 className="h-4 w-4 mr-2 animate-spin" />
-              ) : (
-                <Download className="h-4 w-4 mr-2" />
-              )}
-              Download project
-            </Button>
+            <DropdownMenu>
+              <DropdownMenuTrigger asChild>
+                <Button variant="outline" size="sm" disabled={isDownloading}>
+                  {isDownloading ? (
+                    <Loader2 className="h-4 w-4 mr-2 animate-spin" />
+                  ) : (
+                    <Download className="h-4 w-4 mr-2" />
+                  )}
+                  Download project
+                  <ChevronDown className="h-4 w-4 ml-1" />
+                </Button>
+              </DropdownMenuTrigger>
+              <DropdownMenuContent align="end">
+                <DropdownMenuItem onClick={() => startProjectDownload()}>
+                  Latest version only
+                </DropdownMenuItem>
+                <DropdownMenuItem onClick={() => startProjectDownload(undefined, { allVersions: true })}>
+                  All versions
+                </DropdownMenuItem>
+              </DropdownMenuContent>
+            </DropdownMenu>
           )}
           {canEdit && (
             <Button variant="outline" size="sm" asChild>
@@ -398,19 +417,33 @@ export function ProjectContentClient({
               Cancel
             </Button>
             {canDownloadProject && (
-              <Button
-                variant="outline"
-                size="sm"
-                onClick={() => startProjectDownload(selectedVideoIds)}
-                disabled={isDownloading || selectedCount === 0}
-              >
-                {isDownloading ? (
-                  <Loader2 className="h-4 w-4 mr-2 animate-spin" />
-                ) : (
-                  <Download className="h-4 w-4 mr-2" />
-                )}
-                Download selected
-              </Button>
+              <DropdownMenu>
+                <DropdownMenuTrigger asChild>
+                  <Button
+                    variant="outline"
+                    size="sm"
+                    disabled={isDownloading || selectedCount === 0}
+                  >
+                    {isDownloading ? (
+                      <Loader2 className="h-4 w-4 mr-2 animate-spin" />
+                    ) : (
+                      <Download className="h-4 w-4 mr-2" />
+                    )}
+                    Download selected
+                    <ChevronDown className="h-4 w-4 ml-1" />
+                  </Button>
+                </DropdownMenuTrigger>
+                <DropdownMenuContent align="end">
+                  <DropdownMenuItem onClick={() => startProjectDownload(selectedVideoIds)}>
+                    Latest version only
+                  </DropdownMenuItem>
+                  <DropdownMenuItem
+                    onClick={() => startProjectDownload(selectedVideoIds, { allVersions: true })}
+                  >
+                    All versions
+                  </DropdownMenuItem>
+                </DropdownMenuContent>
+              </DropdownMenu>
             )}
             {canEdit && (
               <Button
diff --git a/app/api/projects/[projectId]/download/route.ts b/app/api/projects/[projectId]/download/route.ts
index 07706ad..24668fa 100644
--- a/app/api/projects/[projectId]/download/route.ts
+++ b/app/api/projects/[projectId]/download/route.ts
@@ -22,6 +22,7 @@ export async function GET(request: NextRequest, { params }: RouteParams) {
     const session = await auth();
     const { projectId } = await params;
     const requestedVideoIds = parseRequestedVideoIds(request.nextUrl.searchParams.get('videoIds'));
+    const includeAllVersions = request.nextUrl.searchParams.get('versions') === 'all';
 
     if (requestedVideoIds && requestedVideoIds.length === 0) {
       return apiErrors.badRequest('At least one video must be selected for download');
@@ -92,7 +93,7 @@ export async function GET(request: NextRequest, { params }: RouteParams) {
       }
     }
 
-    const manifest = buildProjectDownloadManifest(project.name, videos);
+    const manifest = buildProjectDownloadManifest(project.name, videos, { includeAllVersions });
     const validationError = validateProjectDownloadManifest(manifest);
     if (validationError) {
       return apiErrors.badRequest(validationError);
diff --git a/app/api/versions/[versionId]/download/route.ts b/app/api/versions/[versionId]/download/route.ts
index 7586eb0..e66ad15 100644
--- a/app/api/versions/[versionId]/download/route.ts
+++ b/app/api/versions/[versionId]/download/route.ts
@@ -315,8 +315,13 @@ export async function GET(request: NextRequest, { params }: RouteParams) {
       return apiErrors.badRequest('Download is currently supported for Bunny versions only');
     }
 
-    if (sourceParam !== null && sourceParam !== 'original' && sourceParam !== 'compressed') {
-      return apiErrors.badRequest('Invalid source. Allowed values: original, compressed');
+    if (
+      sourceParam !== null &&
+      sourceParam !== 'auto' &&
+      sourceParam !== 'original' &&
+      sourceParam !== 'compressed'
+    ) {
+      return apiErrors.badRequest('Invalid source. Allowed values: auto, original, compressed');
     }
 
     if (
diff --git a/lib/project-download.ts b/lib/project-download.ts
index 0836d2b..af00f50 100644
--- a/lib/project-download.ts
+++ b/lib/project-download.ts
@@ -119,6 +119,15 @@ type VideoRow = {
   assets: AssetRow[];
 };
 
+function selectLatestVersion(versions: VersionRow[]): VersionRow[] {
+  if (versions.length === 0) return [];
+  let latest = versions[0]!;
+  for (const version of versions) {
+    if (version.versionNumber > latest.versionNumber) latest = version;
+  }
+  return [latest];
+}
+
 function makeUniqueName(baseName: string, usedNames: Set<string>): string {
   if (!usedNames.has(baseName)) {
     usedNames.add(baseName);
@@ -175,7 +184,9 @@ function buildAssetFileName(videoIndex: number, videoTitle: string, asset: Asset
 
 function versionDownloadUrl(version: VersionRow): string | null {
   if (version.providerId === 'bunny' && version.videoId) {
-    return `/api/versions/${version.id}/download?source=auto`;
+    // Always fetch the original (uncompressed) file for bulk/project downloads so
+    // quality never drops. 'auto' could silently fall back to a compressed MP4.
+    return `/api/versions/${version.id}/download?source=original`;
   }
   if (version.providerId === 'r2') {
     if (version.originalUrl.startsWith('/api/upload/video/')) {
@@ -209,10 +220,17 @@ function bigintToSafeNumber(value: bigint): number | null {
   return Number(value);
 }
 
+export type BuildProjectDownloadManifestOptions = {
+  /** Include every version of each video. Defaults to latest version only. */
+  includeAllVersions?: boolean;
+};
+
 export function buildProjectDownloadManifest(
   projectName: string,
-  videos: VideoRow[]
+  videos: VideoRow[],
+  options: BuildProjectDownloadManifestOptions = {}
 ): ProjectDownloadManifest {
+  const { includeAllVersions = false } = options;
   const files: ProjectDownloadManifestFile[] = [];
   const usedNames = new Set<string>();
 
@@ -224,7 +242,11 @@ export function buildProjectDownloadManifest(
     const videoIndex = index + 1;
     const videoTitle = sanitizeFileName(video.title) || `video-${videoIndex}`;
 
-    for (const version of video.versions) {
+    const versionsToInclude = includeAllVersions
+      ? video.versions
+      : selectLatestVersion(video.versions);
+
+    for (const version of versionsToInclude) {
       const url = versionDownloadUrl(version);
       if (!url) continue;