Encoding

 

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
TypeVideo BitrateMono Audio BitrateStereo Audio Bitrate5.1 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

TypeVideo BitrateMono Audio BitrateStereo Audio Bitrate5.1 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

 

 

Have more questions? Submit a request

0 Comments

Please sign in to leave a comment.
Powered by Zendesk