In this study, we examined the communication characteristics of network-based video transmission using Network Device Interface (NDI). NDI is a novel technology that enables high-quality video transmission via a single LAN cable; however, its communication characteristics, such as data throughput, have not been fully clarified.
To address this, we experimentally investigated the variation in communication volume with respect to video resolution and the number of streams, as well as the impact on audio and video under restricted network bandwidth. For the experiments, we employed 1080p60 video, including SYNCTEST footage to verify audio-visual synchronization, along with frame rate test videos.
The results revealed that stable transmission of 1080p60 video requires a communication bandwidth of approximately 9 MB/s or more, and that communication volume increases proportionally with video resolution and the number of streams. Furthermore, when the available bandwidth was restricted, delays in audio and video were observed, while the impact on visual quality remained minimal.
[1] Blur Busters UFO Motion Tests, https://blurbusters.com/motion-tests/tools/ (Reference: 2025/10/24)
[2] SYNCTEST, https://www.youtube.com/watch?v=Wtt9aK27mes (Reference: 2025/10/24)
