User Guide


Setting up your live encoder

  Last Updated on November 17, 2015 at 11:14 am

PART 1 – Copy the Encoder Details

Once you’ve set your event up you can click on the button which takes you to the embed page where you can select and copy the encoder settings.

Click the tab called “Encoder Details”. First select your nearest ingest point / country to you. Then copy both the “Primary Encoder Path” and “Streaming Name” to your live encoder. To make things easier, if you use FMLE (Flash Media Live Encoder) you can download our Pre Configured encoder profile here.

Screenshot

encoder_settings

PART 2 – Configuring the Encoder

For this example we will use FMLE (Flash Media Live Encoder). Click here for more information on FMLE.

Follow these steps :

1. Download your stream profile for FMLE. Click on the link under encoding settings to do so.
2. Save the FMLE.xml file to your computer.
3. Launch FMLE on your computer.
4. Go to File>Open Profile.
5. Navigate to where the FMLE.xml is saved and select “Open”.

FMLE should now be populated with all the settings and have your “Primary Encoder Path” and “Streaming Name” filled in. Make sure that you have selected the video device and audio input you want and click “Start”. You should see the stream come through on your player soon after.

Notes:

Below are some additional notes about encoders such as FMLE.

1) Video Device: Select the video device you want to use to stream
2) Encoding Format: Select H.264
3) Frame Rate: Suggest 30 fps (Anything higher is not recommended)
4) Keyframe Interval: Suggest 10 seconds
5) Input Size: Choose an input size that is equal to your output size below. Note that the ratio of your input size should be the same.
6) Output Size and Video Bit Rate: Make the output size equal or less than the input size. The large the output size the higher the Bit Rate you will need.

Here are some rough video guidelines:
Low: 480×270 at Video Bit Rate of 400 kbps and Audio Bit Rate of 64kbps
Medium: 640×360 at Video Bit Rate of 800-1200 kbps and Audio Bit Rate of 96kbps
High: 960×540 at Video Bit Rate of 800-1500 kbps and Audio Bit Rate of 96kbps
HD 720: 1280×720 at Video Bit Rate of 1200-4000 kbps and Audio Bit Rate of 128kbps
HD 1080: 1920×1080 at Video Bit Rate of 4000-8000 kbps and Audio Bit Rate of 192kbps

Please Note:  Encoding at a higher bit rate will require more CPU resources and bandwidth.

7) Audio Device: The audio device you want to use for the stream. This does not need to be the built in mic to your camera. You can select an alternate audio input.
8) Format: Choose AAC. If you are on a PC you will have to purchase a license from Main Concept
9) Channels: Stereo is preferred over mono.
10) Sample Rate: 44100 Hz or 44.1 kHz is a good starting point unless you have audio gear that requires something else.
11) Audio Bit Rate: You could start at 80 kbps and go up from there.
12) RTMP URL and Stream Key: Your RTMP will be populated automatically when you open up the XML file you download for your live event.
13) Save to File: You can save a local copy of the broadcast to your computer. Having a local copy is always a good idea.

NEXT: Recommended Encoding Settings