...

2. A stream published to one of Origin servers should be played on the same Origin server or any Edge server (through Transcoder server if necessary), but should not be played from another Origin server in the same CDN.

Known issues

1. When FFmpeg based encoder is used, there can be distortions (macroblocks) in first frames of stream transcoded

Symptoms: viewer sees macroblocks in first frames when transcoding profiles is used

Solution:

a) Set quality parameter in transcoding profile

profiles:
 -240p:
  audio:
    codec : opus
    rate : 48000
  video:
    height : 240
    gop : 50
    fps : 25
    codec : h264
    preset : veryfast
    quality : 25
    codecImpl : FF

b) use OpenH264 encoder if it is necessary to keep videbitrate specified

profiles:
 -240p:
  audio:
    codec : opus
    rate : 48000
  video:
    height : 240
    bitrate : 400
    gop : 50
    fps : 25
    codec : h264
    codecImpl : OPENH264