NDI Tools: NVIDIA GPUs stream into the network

Source: Hardware Luxx added 16th Dec 2020

  • ndi-tools:-nvidia-gpus-stream-into-the-network

In cooperation with the Vizrt Group, NVIDIA presents a new feature of its own GeForce graphics cards, which focuses on streaming content, especially game streaming. Using the “NDI Screen Capture HX” software from the Vizrt Group and the NVEC encoder of the Turing and Ampere GPUs, the cards can stream their video signal over the network so that it can be processed elsewhere.

NVIDIA has been very active in this segment for some time. NVIDIA Broadcast is the central software platform for streamers who want to make their content available directly. Virtual screen backgrounds, automatically following camera sections and an improvement in audio quality using RTX Voice are the central functions here. Broadcast is intended as a local overall solution that takes over all the necessary functions where the stream is created.

NDI Screen Capture HX works with the GeForce GPUs in the form that the screen capture is made available as an NDI source in the network. This NDI stream can then be received and processed on another PC by software such as OBS Studio, XSplit or TriCaster. This is particularly interesting if the processing and processing of the stream takes place on a second system. Previously, for example, a capture card had to be used.

NDI Screen Capture HX can stream the stream in 4K resolution and with up to 120 Hz transmitted. On the GPU side, hardware acceleration using an NVEC encoder is supported. The Vizrt Group and NVIDIA speak of low transmission latencies. The audio signal is of course transmitted synchronously with the video signal. Additional audio signals can add further input.

NDI Screen Capture HX is offered as part of the freely available NDI tools. You can find the corresponding downloads at www.ndi.tv. The corresponding remote station, for example the Open Broadcaster software, is also available free of charge.