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Vote for Softvelum in Streaming Media European Readers' Choice Awards 2019 under Mobile Video App, Server Hardware/Software and Transcoding Solution categories!


Adaptive bitrate for real-time streaming: SLDP technology covers this use case perfectly.
Read this article for setup and usage details.


Certbot setup and Let's Encrypt certificates auto-renewal: read more how to set it up for Nimble Streamer.

qosifire news

Here's what we've added to Qosifire recently.
  • HLS debugging: you can track in real-time the DTS/PTS timestamps for video and audio samples in HLS for MPEG-TS, fMP4 and audio-only containers. Watch this video to see it in action.
  • Alerts are now more flexible, check this article for details of setup.


Nimble Streamer now allows using constant bitrate with mux rate in UDP streaming.
Read this article for details and sample charts.


Nimble Streamer uses IP for handling sessions. However this may bring issues for certain type of users who use proxies.
Read this article for more details.


Take a look at how Qosifire allows tracking ABR HLS streams in real-time. We've released a new video about it.

Qosifire is able to monitor the consistency and quality of live streaming, sign up for a free trial to test it on your streams.


New Nimble Streamer native API calls were added for convenience of RTMP re-publishing control.
Read this article and visit API reference page for details.


We've added passing Icecast metadata via Nimble Live Transcoder, in addition to passthrough during transmuxing.
Read this article for setup details.


Softvelum 2019 Q2 news are online:
  • Qosifire new features;
  • New products snapshots;
  • SRT improvements and articles;
  • SCTE-35 in Advertizer;
  • Larix updates and new docs reference
Read Q2 news for more updates.

srt updates

We have two updates for SRT users of Nimble Streamer:
  • SRT packet loss for Sender in Listener mode has been fixed. Read this article for more details and upgrade your SRT package.
  • SRT sender maxbw parameter is highly useful for preventing from excessive bandwidth usage during lost packets re-transmission. We recommend using it for all streams on sender side. Read this article for more information.
  • SRT latency and maxbw parameters are strongly recommended to be used for re-transmission control via SRT protocol. Read this article where we explain all aspects of using them.
If SRT technology is part of your streaming infrastructure, please read both articles to be up-to-date with latest improvements.


Nimble Advertizer now supports SCTE-35 markers for ads insertion into live streams.
Read this article for details.
Also take a look at Advertizer tech spec and demo.

Is your stream working? Check your stream availability, free of charge

Check any stream right now for free

The check over is performed via distributed network of checkpoints, each checkpoint is a server powered by Nimble Streamer instance.
HLS, RTMP, Smooth, HDS, DASH, RTSP, Shoutcast and Icecast protocols are supported including SSL/TLS for RTMP, RTSP and HLS.

Enter the stream URL to start the availability check over. For HTTP protocols like HLS you should specify the URL of the playlist or manifest.

E.g: http://video.wmspanel.com/local/raw/nimble.mp4/playlist.m3u8

The results will appear below.

To improve HTTP streaming robustness and scalability, you can use Nimble Streamer as your re-streaming edge as well as live streaming origin server.

Action Amsterdam, Netherlands San Francisco, USA New York, USA Singapore, Asia Frankfurt, Germany Toronto, Canada
Validate URL - - - - - -
Validate protocol - - - - - -
Resolve server name - - - - - -
Connect to server - - - - - -
Send stream request - - - - - -
Get stream info - - - - - -
Get full stream info - - - - - -
Parse stream info - - - - - -
Check for redirect - - - - - -
Check stream availability - - - - - -


Need more QoS/QoE monitoring?

Qosifire is a live streaming quality monitoring service.
It allows tracking multiple aspects of live streams' quality and get instant alerts on issues.
Find out more

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