Merge branch 'release/2.1.0' into develop

[github/Chocobozzz/PeerTube.git] / shared / models / videos / video-resolution.enum.ts

diff --git a/shared/models/videos/video-resolution.enum.ts b/shared/models/videos/video-resolution.enum.ts
index c9b25892102b146bcdfb52208c715546e65b1f54..06e0779617f908386d839c6c8b9e7ed2246fc651 100644 (file)
--- a/shared/models/videos/video-resolution.enum.ts
+++ b/shared/models/videos/video-resolution.enum.ts
@@ -1,11 +1,13 @@
 import { VideoTranscodingFPS } from './video-transcoding-fps.model'
 
 export enum VideoResolution {
+  H_NOVIDEO = 0,
   H_240P = 240,
   H_360P = 360,
   H_480P = 480,
   H_720P = 720,
-  H_1080P = 1080
+  H_1080P = 1080,
+  H_4K = 2160
 }
 
 /**
@@ -13,31 +15,43 @@ export enum VideoResolution {
  *
  * Sources for individual quality levels:
  * Google Live Encoder: https://support.google.com/youtube/answer/2853702?hl=en
- * YouTube Video Info (tested with random music video): https://www.h3xed.com/blogmedia/youtube-info.php
+ * YouTube Video Info: youtube-dl --list-formats, with sample videos
  */
-export function getBaseBitrate (resolution: VideoResolution) {
+function getBaseBitrate (resolution: VideoResolution) {
   switch (resolution) {
-  case VideoResolution.H_240P:
-    // quality according to Google Live Encoder: 300 - 700 Kbps
-    // Quality according to YouTube Video Info: 186 Kbps
-    return 250 * 1000
-  case VideoResolution.H_360P:
-    // quality according to Google Live Encoder: 400 - 1,000 Kbps
-    // Quality according to YouTube Video Info: 480 Kbps
-    return 500 * 1000
-  case VideoResolution.H_480P:
-    // quality according to Google Live Encoder: 500 - 2,000 Kbps
-    // Quality according to YouTube Video Info: 879 Kbps
-    return 900 * 1000
-  case VideoResolution.H_720P:
-    // quality according to Google Live Encoder: 1,500 - 4,000 Kbps
-    // Quality according to YouTube Video Info: 1752 Kbps
-    return 1750 * 1000
-  case VideoResolution.H_1080P: // fallthrough
-  default:
-    // quality according to Google Live Encoder: 3000 - 6000 Kbps
-    // Quality according to YouTube Video Info: 3277 Kbps
-    return 3300 * 1000
+    case VideoResolution.H_NOVIDEO:
+      // audio-only
+      return 64 * 1000
+
+    case VideoResolution.H_240P:
+      // quality according to Google Live Encoder: 300 - 700 Kbps
+      // Quality according to YouTube Video Info: 285 Kbps
+      return 320 * 1000
+
+    case VideoResolution.H_360P:
+      // quality according to Google Live Encoder: 400 - 1,000 Kbps
+      // Quality according to YouTube Video Info: 700 Kbps
+      return 780 * 1000
+
+    case VideoResolution.H_480P:
+      // quality according to Google Live Encoder: 500 - 2,000 Kbps
+      // Quality according to YouTube Video Info: 1300 Kbps
+      return 1500 * 1000
+
+    case VideoResolution.H_720P:
+      // quality according to Google Live Encoder: 1,500 - 4,000 Kbps
+      // Quality according to YouTube Video Info: 2680 Kbps
+      return 2800 * 1000
+
+    case VideoResolution.H_1080P:
+      // quality according to Google Live Encoder: 3000 - 6000 Kbps
+      // Quality according to YouTube Video Info: 5081 Kbps
+      return 5200 * 1000
+
+    case VideoResolution.H_4K: // fallthrough
+    default:
+      // quality according to Google Live Encoder: 13000 - 34000 Kbps
+      return 22000 * 1000
   }
 }
 
@@ -50,8 +64,7 @@ export function getBaseBitrate (resolution: VideoResolution) {
  * getBaseBitrate() * 1.4. All other values are calculated linearly
  * between these two points.
  */
-export function getTargetBitrate (resolution: VideoResolution, fps: number,
-    fpsTranscodingConstants: VideoTranscodingFPS) {
+export function getTargetBitrate (resolution: VideoResolution, fps: number, fpsTranscodingConstants: VideoTranscodingFPS) {
   const baseBitrate = getBaseBitrate(resolution)
   // The maximum bitrate, used when fps === VideoTranscodingFPS.MAX
   // Based on numbers from Youtube, 60 fps bitrate divided by 30 fps bitrate:
@@ -71,7 +84,6 @@ export function getTargetBitrate (resolution: VideoResolution, fps: number,
 /**
  * The maximum bitrate we expect to see on a transcoded video in bytes per second.
  */
-export function getMaxBitrate (resolution: VideoResolution, fps: number,
-    fpsTranscodingConstants: VideoTranscodingFPS) {
+export function getMaxBitrate (resolution: VideoResolution, fps: number, fpsTranscodingConstants: VideoTranscodingFPS) {
   return getTargetBitrate(resolution, fps, fpsTranscodingConstants) * 2
 }