Recommended bit-rates, codecs, and resolutions, and more
We have found the best setting for client review approval to be the following:
A video that is an MP4 with AAC audio encoded in H.264, that is 720p (1280x720) in resolution with a video bit-rate of 5,000kbps.
For more technical details please look below.
Container: .mp4
- No Edit Lists (or you may lose AV sync)
- moov atom at the front of the file (Fast Start)
Audio Codec: AAC-LC
- Channels: Stereo or Stereo + 5.1
- Sample rate 96khz or 48 khz
Video Codec: H.264
- Progressive scan (no interlacing)
- High Profile
- 2 consecutive B frames
- Closed GOP. GOP of half the frame rate.
- CABAC
- Variable bitrate. No bitrate limit required, though we offer recommended bit rates below for reference
- Chroma subsampling: 4:2:0
Frame rates
Frame rates should match the source material. For example, content shot in 24fps should be encoded and uploaded at 24fps. Content recorded at 30fps should be uploaded at 30fps. Content shot in 720p60, should be uploaded at 720p60. Content at 1080i 60, should be deinterlaced, going from 60 interlaced fields per second to 30 progressive frames per second before uploading.
Bitrates
Standard quality uploads| Type | Video Bitrate | Mono Audio Bitrate | Stereo Audio Bitrate | 5.1 Audio Bitrate |
|---|---|---|---|---|
| 2160p (4k) | 35-45 Mbps | 128 kbps | 384 kbps | 512 kbps |
| 1440p (2k) | 10 Mbps | 128 kbps | 384 kbps | 512 kbps |
| 1080p | 8,000 kbps | 128 kbps | 384 kbps | 512 kbps |
| 720p | 5,000 kbps | 128 kbps | 384 kbps | 512 kbps |
| 480p | 2,500 kbps | 64 kbps | 128 kbps | 196 kbps |
| 360p | 1,000 kbps | 64 kbps | 128 kbps | 196 kbps |
High quality uploads for creators with enterprise quality internet connections
| Type | Video Bitrate | Mono Audio Bitrate | Stereo Audio Bitrate | 5.1 Audio Bitrate |
|---|---|---|---|---|
| 1080p | 50,000 kbps | 128 kbps | 384 kbps | 512 kbps |
| 720p | 30,000 kbps | 128 kbps | 384 kbps | 512 kbps |
| 480p | 15,000 kbps | 128 kbps | 384 kbps | 512 kbps |
| 360p | 5,000 kbps | 128 kbps | 384 kbps | 512 kbps |
Resolutions
Remark uses 16:9 aspect ratio players. If you are uploading a non-16:9 file, it will be processed and displayed correctly as well, with pillar boxes (black bars on the left and right) or letter boxes (black bars at the top and bottom) provided by the player. If you want to fit the player perfectly, encode at these resolutions:
- 2160p: 3840x2160
- 1440p: 2560x1440
- 1080p: 1920x1080
- 720p: 1280x720
- 480p: 854x480
- 360p: 640x360
- 240p: 426x240
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