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Genvid Technologies

Genvid SDK 1.19.1


#1

Welcome to Genvid Technologies SDK 1.19.1. This is a bug fix release. See the previous release notes for more information on the content of the 1.19.0 release.

Current functionalities

Here is a summary of our current functionalities. See below for the list of new features in this release.

  • Windows C++ API with a C# wrapper.
  • D3D11 or raw frame video capture.
  • WASAPI audio capture.
  • Video encoding (H264 + AAC).
  • Video streaming to YouTube.
  • Multiple audiovisual and data streams coming from multiple instances.
  • Streaming additional arbitrary game events and notifications.
  • Scalable event messaging system.
  • JavaScript SDK for embedded webpage.
  • Automatic synchronisation between video and game-data streams.
  • Multiple distributed sources of A/V and Data (still beta).
  • Live video editing and basic composition effects (still in beta).
  • RTMP Ingest server (still in beta).
  • Unity3D integration (Game and Management).
  • Unreal Engine integration (Game and Management).
  • REST API to control the services (still in beta).
  • Tools and scripts for managing your local and remote clusters, with example scripts for AWS.
  • Metrics feed (still in beta).
  • Load-testing library.
  • Extensive documentation.
  • Multiple integration samples.

More to come

Additionally, we are working on a full new-feature pipeline to be released as soon as each is ready:

  • Remote management services for sharing your clusters with others.
  • SSL support for external APIs.
  • ACL support on Management APIs.
  • Hardware encoding.
  • Instant replay.
  • Better cluster-configuration management.
  • Many more improvements and features exposed in our UI (including the plugins).
  • Offline data-stream recording and playback.
  • Offline broadcast-session editing.
  • SDK Manager to help handling multiple SDK installations.

Fixes in this version

  • [installer] Added support for silent installation using /S.
  • [installer] Added support for disabling installation of dependencies using /python=0, /vs2015=0, /nodejs=0, /tightvnc=0.
  • [sdk] Fixed sending the stream formats twice on first connection between composed and gvencode.
  • [audio] Fixed audio framerate computation that could create a drop in audio quality.
  • [ingest] Fixed memory leak in gvencode when starting and stopping the streaming multiple times.
  • [gvencode] Fixed a desync problem with the source delay.
  • [gvencode] Optimized Chroma Key filter.
  • [metrics] Fixed framesent and framedropped metrics.
  • [studio] Solved an issue preventing the video layout sliders to update their range.
  • [studio] Cleaned up sliders update for smoother UI feedback.
  • [studio] Fixed the audio balance-setting algorithm to not mix left and right channels.
  • [cluster-api] Fixed a bug where parsing the Terraform output to get required fields caused the cluster-api to crash.
  • [bastion-api] Fixed Terraform page to show a cluster’s status as Busy when a Terraform operation is in progress.
  • [bastion-api] Made all string inputs in the Terraform variable- editor support multiline values.

Known bugs

Twitch Extension Developer Rig not working

The Twitch Extension Developer Rig doesn’t provide any real player or video stream to synchronize the data. For this reason, our web client isn’t able to playback any data.

Studio in multi-user mode has limitations

The Studio interface can be used in multi-user mode. But we strongly advise you not to touch to the same Studio widgets at the same time: you could lose change in the process due to poor concurrent modification handling on our side. In the future, we plan to add locking mechanics.

Compose window isn’t available if behind a proxy

Future versions of Bastion will have a remote server to allow access from different machines. The current version has limited support for this and is likely to encounter some problems if the Bastion host lives behind a cluster firewall (like on a Amazon EC2 machine). The workaround is creating VPN connections to the Bastion machine so that the local IP of the machine is accessible from the client machine.

The application doesn’t work properly after Windows comes back from sleep

Nomad has some difficulties with sleeping jobs, including itself. This is unlikely to get fixed in Nomad, but shouldn’t happen in a production environment. The best workaround at present is to not allow Windows to go to sleep when you are running the service, or simply to restart the service with a genvid-bastion reinstall. (Unfortunately, genvid-bastion restart is not sufficient).

The YouTube stream isn’t properly reset after a gvencode restart

If you stop and quickly restart the services, the YouTube streaming service considers it part of the same streaming session. Although this may be desirable most of the time, this could lead to showing up as the previous session due to the long latency between the services and the actual view which can create some delay in the stream. A future version will provide a proper way to request a new stream. Until then, you can either reset your stream key from the YouTube dashboard or simply wait a little longer (about 5 minutes should be enough) before restarting the service.

Audio captures microphone or infinitely loops

When using the WASAPI audio auto-capture mode, every sound going through the machine’s default audio-device gets captured. This includes system alerts and microphone input, as well as your web browser. When test-viewing your game stream using the same local machine running the game, the game will also capture its own audio stream with ~10s of latency. This yields some echo with progressively worse sound quality since it is compressed every time it is streamed.

You can disable audio in 2 ways:

  • Set settings.encode.input.silent to true in your configuration. (The default setting.)
  • Use our raw audio-capture, which is now the default setting in Unity.

Standalone player with Firefox

The readable streams must be enabled in Firefox for the standalone player to work properly. You must set dom.streams.enabled and javascript.options.streams preferences to true from the about:config URL.

Auto-cut checkbox state is stored locally only

In Studio, the state of the auto-cut checkbox in Scene Widget is only stored in local storage: Clearing the browser cache will also clear user input. Also, if auto-cut is turned “on” before the Studio session ends, it will be set back to “off” by default when you start the Studio session again.

Studio can not take inputs of the same control from multiple windows

If Studio is opened in more than one browser window and inputs are received from different sources to one control, the final value will then bounce between the different inputs instead of updating it to the latest one. For example, in Audio Mixer Widget, if a user changes the slider of Master Gain to 20 db and another user then changes it to 0 db, the slider handle will bounce between 20 db and 0 db instead of being set to 0 db. Inputs from different windows to one control is not recommended until we resolve the issue.

Unity 2018 Tutorial - Might Have Wrong Resolution

When using Unity 2018, you might have resolution problems upon launch. The window of the stream might not have the desired resolution thus resulting in an offset between the video stream and the UI. We currently have no workaround for this but are investigating the issue. Please note that this issue does not occur in Unity versions prior to 2018.