Creating New Profiles

Owned by Copy Space for Confluence
Last updated: 27 Jun 2018 by israel drori (Unlicensed)
3 min read

In order for the Broadcaster to switch from one encoding to another, different profiles must be configured first.

Supported Video and Audio formats include:

  • Video Decoding – MPEG2, H.264/AVC , H.265/HEVC
  • Video Encoding – MPEG2, H.264/AVC , H.265/HEVC
  • Audio Decoding – AAC, MPEG-1 Audio Layer I / II / III, MPEG-2 Audio Layer I / II / III
  • Audio Encoding – AAC only, AAC only; Pass through – any audio codec (MPEG1/2 / AAC / AC-3)

AC3 is supported as pass-through (no decoding and no encoding)


The transcoder comes with the following pre-set common video profiles:
1080i60 / 1080i59.94, 1080p30 / 1080p25, 720p60, 720p50 / 720p30, 576i60 / 576p25, 480i60 / 480p29.97

However you can define your own custom profiles.


To Create a New Profile:

  1. In the Transcoder page, click . The Add New Profile window is displayed:
  2. Select the desired Profile type - MPEG2, H.264, H.265 for video profile and AAC for audio profile.
  3. Enter in the desired fields in the Profile configuration (see table below for additional parameters).
    Selecting a specific configured Preset will fill in the settings automatically or alternatively leaving the default as Custom requires you to configure it by yourself.
  4. If you want to configure the Advanced options for the video profiles, select Advanced options and fill out the respective fields (see table below for additional parameters).
  5. Click Apply. 
    The newly configured profile is created and appears on the screen.
ParameterDescription
Profile configurationFor Video - MPEG2, H.264, H.265

Preset

Displays list of preset configured profiles.
Default: Custom

Name

Enter a unique name for the profile.

Hardware AccelerationSelect this checkbox to utilize hardware-based acceleration if it has been installed.

Encoding Profile

For video profiles (MPEG2, H.264, H.265):
High / Main / Baseline

Default: Main

Resolution

 

The new resolution, if resizing the video.

Frames per Second

Select a new frame rate, or select Original to use the original frame rate of the stream.

Default: Original

Bitrate Mode

Specifies the bitrate mode for the profile. Either the transcoder will strive for the optimum in VBR (Variable Bitrate) or the most constant in CBR (Constant Bitrate). 
Default: CBR

Average Bitrate (kbps)

Specifies the average bitrate for the profile.

Max Bitrate (kbps)

Specifies the maximum bitrate for the profile. Available only if the Bitrate Mode is set to VBR.

Performance

the performance of the transcoding will span between Fastest and the Best Quality with Balance in the middle.
Default: 9 (Balanced)

Advanced Options
Copy GOP from source

GOP [frames]

Specifies the number of frames in a GOP (Group of Pictures). Default:60


Default settings: Closed, Fixed

B-Frames

Specifies the maximal number of consecutive B frames in the GOP. Default:0

Frame Type

Specifies the frame type – progressive or interlaced.

Default: Progressive

Reference Frames

Specifies the number of frames that can be referenced for each frame.

Default: 2

HRD buffer length (seconds)Specifies the length of the HRD buffer in MPEG-2.
Profile configurationFor Audio - AAC
NameEnter a unique name for the profile.

Bitrate

Specifies the bitrate for the profile
Encoding Profile

For audio profile (AAC):

AAC Low Complexity / AAC High Complexity 1 / AAC High Complexity 2

Default: AAC Low Complexity