February 13, 2018

Get 10% off the best live streaming encoders

Softvelum and Haivision partner to offer you reliable, low latency video streaming over the public internet with SRT.



Learn how it works. Softvelum’s recent blog post: Reliable Low Latency Delivery with SRT+SLDP on Haivision.com demonstrates the great combination of Haivision encoders and Nimble Streamer media server in a complete end-to-end SRT workflow. SRT, a UDP-based protocol that optimizes streaming performance on unreliable networks, was applied to both contribution and distribution endpoints as part of a video stream workflow, to deliver the best quality and lowest latency video at all times.

January 22, 2018

Using Amazon EC2 for HEVC transcoding

Nimble Streamer Live Transcoder is currently used in various live transcoding scenarios on various platforms. It can be deployed both to bare metal and virtual servers.

When it comes to HEVC (H.265) transcoding, there are certain limitations you may face. H.265 encoding is resource consuming so Nimble Live Transcoder supports only hardware encoding which is currently implemented for NVidia NVENC and Intel QuickSync. So if your project requires to use some cloud computing platform with no bare metal, you need to find a provider which has hardware acceleration available as part of cloud services. Our customers ask us about such provider so we wanted to do some analysis about this this.

Choosing EC2


After some research we ended up with Amazon Web Services (AWS) and their Elastic Compute Cloud (EC2). Here's what we have.

First, we need to define what chips are capable of HEVC encoding. Take a look at NVENC Support Matrix to see which of the chips have proper support. Considering latest NVidia changes in GeForce drivers EULA, not many cards can do what we need.

Having the list of proper chipsets, check EC2 instance types.  There are two of them that meet our criteria.

  • G3 instances have Tesla M60 based on 2nd generation of Maxwell chip family, starting from 1.14 USD per hour.
  • P3 instances have Tesla V100 based on Volta chip family, starting from 3.06 USD per hour.

We ran some tests on g3.4xlarge instance type, it has Tesla M60 chipset on board which we tested previously on bare metal. This time it also showed great results being used in cloud environment.

Notice that not all regions have P3 and G3 instances available. We tested our case in US East N. Virginia region, you should manually check what is the closest region with required instance types.

January 14, 2018

Nimble Advertizer: server-side ads insertion for Icecast

Our online audio streaming customers often face the need for monetizing for their online radios and live podcasts. This should be done on a server side to provide best user experience and avoid ad-blockers usage.

Today Softvelum introduces Server-Side Ads Insertion (SSAI) framework for Nimble Streamer, it's called Nimble Advertizer. This framework allows dynamically insert personalized ads into live streaming content.

Advertizer key features are:

  • Pre-roll ads per each connection
  • Flexible timing setup for mid-roll ads
  • Per-stream ads insertion business logic
  • Personalized ads

Nimble Advertizer may use all input live protocols supported by Nimble Streamer, they are Icecast and SHOUTcast, RTMP, RTSP, SRT, UDT, HLS and MPEG2TS.
Live input codecs are AAC and MP3. Notice that with our Live Transcoder you may also use MP3, MP2, Speex, PCM G.711 (a-law, μ-law)
For your ads source files you may use AAC and MP3 codecs.

Output live stream protocol is Icecast - this is the most popular protocol for online radios.

The workflow is easy to adopt within any business logic

  1. Nimble Streamer media server processes incoming streams to get audio content
  2. Nimble Advertizer calls your handler web application to get business logic description
  3. Advertizer gets files with advertisements to process them via Nimble Streamer according to your logic defined via handler
  4. Nimble inserts the ads into original media and packages it into Icecast protocol
  5. End user connects to Nimble and gets audio stream containing original content mixed with advertisements
  6. Playback is running smooth regardless of ads insertion over time in any player which supports Icecast.


Server-side Ads Insertion framework (Nimble Advertizer) is a premium functionality which requires additional payments. Please contact us to get more details about functionality and pricing.

Related documentation


Nimble StreamerAudio streaming features in Nimble StreamerLive Transcoder