[Note] General Video Bitrate Recommendation
在视频转码的过程中，比较关键的是需要确定目标码率（或最大码率）。
在网上找了一下大型互联网公司的推荐标准，聊为参考。
🔗YouTube
Recommended upload encoding settings
- Recommended video bitrates for SDR uploads
| Type | Video Bitrate Standard Frame Rate (24, 25,30) | Video Bitrate High Frame Rate (48,50,60) |
|---|---|---|
| 2160p(4k) | 35-45 Mbps | 53-68 Mbps |
| 1440p(2k) | 16 Mbps | 24 Mbps |
| 1080p | 8 Mbps | 12 Mbps |
| 720p | 5 Mbps | 7.5 Mbps |
| 480p | 2.5 Mbps | 4 Mbps |
| 360p | 1 Mbps | 1.5 Mbps |
- Recommended video bitrates for HDR uploads
| Type | Video Bitrate Standard Frame Rate (24, 25,30) | Video Bitrate High Frame Rate (48,50,60) |
|---|---|---|
| 2160p(4k) | 44-56 Mbps | 66-85 Mbps |
| 1440p(2k) | 20 Mbps | 30 Mbps |
| 1080p | 10 Mbps | 15 Mbps |
| 720p | 6.5 Mbps | 9.5 Mbps |
| 480p | Not supported | Not supported |
| 360p | Not supported | Not supported |
在翻墙不便的情况下，可以参考图片(PNG)版本。
或者 PDF 版本。
Recommended upload encoding settings (PDF)
🔗Apple
HLS Authoring Specification for Apple Devices
- Video average bit rate (kb/s)
| 16:9 aspect ratio | H.264/AVC | Frame rate |
|---|---|---|
| 416 x 234 | 145 | ≤ 30 fps |
| 640 x 360 | 365 | ≤ 30 fps |
| 768 x 432 | 730 | ≤ 30 fps |
| 768 x 432 | 1100 | ≤ 30 fps |
| 960 x 540 | 2000 | same as source |
| 1280 x 720 | 3000 | same as source |
| 1280 x 720 | 4500 | same as source |
| 1920 x 1080 | 6000 | same as source |
| 1920 x 1080 | 7800 | same as source |
在翻墙不便的情况下，可以参考图片(PNG)版本。
或者 PDF 版本。
HLS Authoring Specification for Apple Devices (PDF)
🔗Others
🔗阿里云云栖社区某博客
| 视频大小 | 分辨率 | 推荐码率 |
|---|---|---|
| 480P | 720 x 480 | 1800 Kbps |
| 720P | 1280 x 720 | 3500 Kbps |
| 1080P | 1920 x 1080 | 8500 Kbps |
🔗Lighterra
| Name | Resolution | Link (Mbps) | Bitrate (Mbps) | Video (kbps) | Audio (kbps) |
|---|---|---|---|---|---|
| 240p | 320 x240 | 1.0 | 0.64 | 576 | 64 |
| 240p | 424 x240 | 1.0 | 0.64 | 576 | 64 |
| 360p | 480 x360 | 1.2 | 0.77 | 704 | 64 |
| 360p | 640 x360 | 1.5 | 0.96 | 896 | 64 |
| 432p | 768 x432 | 1.8 | 1.15 | 1088 | 64 |
| 480p | 640 x480 | 1.5 | 0.96 | 896 | 64 |
| 480p | 848 x480 | 2.0 | 1.28 | 1216 | 64 |
| 480p HQ | 640 x480 | 2.0 | 1.28 | 1216 | 64 |
| 480p HQ | 848 x480 | 2.5 | 1.60 | 1536 | 64 |
| 576p | 768 x576 | 2.3 | 1.47 | 1408 | 64 |
| 576p | 1024 x576 | 3.0 | 1.92 | 1856 | 64 |
| 576p HQ | 768 x576 | 2.5 | 1.60 | 1536 | 64 |
| 576p HQ | 1024 x576 | 3.5 | 2.24 | 2176 | 64 |
| 720p | 960 x720 | 3.0 | 1.92 | 1856 | 64 |
| 720p | 1280 x720 | 4.0 | 2.56 | 2496 | 64 |
| 720p HQ | 960 x720 | 4.0 | 2.56 | 2432 | 128 |
| 720p HQ | 1280 x720 | 5.0 | 3.20 | 3072 | 128 |
| 1080p | 1440 x1080 | 6.0 | 3.84 | 3712 | 128 |
| 1080p | 1920 x1080 | 8.0 | 5.12 | 4992 | 128 |
| 1080p HQ | 1440 x1080 | 9.0 | 5.76 | 5632 | 128 |
| 1080p HQ | 1920 x1080 | 12.0 | 7.68 | 7552 | 128 |
| 1080p Superbit | 1440 x1080 | N/A | 20.32 | 20000 | 320 |
| 1080p Superbit | 1920 x1080 | N/A | 20.32 | 20000 | 320 |
截图备份：
参见 Video Encoding Settings for H.264 Excellence 。
以上。