refactor(server): video transcode processor (#2163)

* refactor(server): video transcode processor

* refactor: rename shouldRotate to isVideoVertical, remove unnecessary await

* refactor: rename getOptions to getFfmpegOptions to be clearer in that context

* fix: optimal preset converting vertical videos already smaller than target resolution

---------

Co-authored-by: Zack Pollard <zackpollard@ymail.com>

server/libs/domain/test/fixtures.ts

@@ -18,6 +18,7 @@ import {
   mapUser,
   SearchResult,
   SharedLinkResponseDto,
+  VideoInfo,
 } from '../src';
 
 const today = new Date();
@@ -704,3 +705,51 @@ export const searchStub = {
     facets: [],
   }),
 };
+
+export const probeStub = {
+  empty: { streams: [] },
+  multiple: Object.freeze<VideoInfo>({
+    streams: [
+      {
+        height: 1080,
+        width: 400,
+        codecName: 'h265',
+        codecType: 'video',
+        frameCount: 100,
+        rotation: 0,
+      },
+      {
+        height: 1080,
+        width: 400,
+        codecName: 'h7000',
+        codecType: 'video',
+        frameCount: 99,
+        rotation: 0,
+      },
+    ],
+  }),
+  noHeight: Object.freeze<VideoInfo>({
+    streams: [
+      {
+        height: 0,
+        width: 400,
+        codecName: 'h265',
+        codecType: 'video',
+        frameCount: 100,
+        rotation: 0,
+      },
+    ],
+  }),
+  tooBig: Object.freeze<VideoInfo>({
+    streams: [
+      {
+        height: 10000,
+        width: 10000,
+        codecName: 'h264',
+        codecType: 'video',
+        frameCount: 100,
+        rotation: 0,
+      },
+    ],
+  }),
+};