我们所知的NDI的终结?

回到2020年，我写道我是 全押在NDI上 在一篇关于鸟狗的专题文章中, NewTek（现为Vizrt）, vMix, 松下, 还有一些人提供摄像机, PTZ凸轮, 编码器, 解码器, 无线, 转换器, 和com都集成了NDI，以便在标准计算机网络上互操作. NDI has evolved over time with the promise that new standards would not render your equipment obsolete. 我自己很早就买入了NDI, 我有很多高清和4K NewTek Spark转换器, PTZ凸轮, 诸如此类.

多年来, NewTek/Vizrt继续改善NDI生态系统, 引入新的NDI|HX2和 NDI | HX3 standards for improved video delivery at low bitrates while continuing to offer Full NDI (also known as High Bitrate NDI). It was repeatedly iterated in a way that new software versions would be backward compatible, implying that early adopters would continue to be able to use their hardware that utilized the HX1 standard.

然而，随着标准的发展，某些设备可能会被抛在后面. 例如, an older TriCaster that was not upgraded with the Advanced Edition 3 software update (a $1,000 update for my TriCaster Mini) would not be able to see or utilize cameras or other hardware utilizing the newer NDI|HX2 standard. 但这就是为什么有一个更新-使兼容性可用.

有趣的是，一段时间后，AE3更新从可用性中删除. 如果最终用户在可选更新可用时没有购买和安装, they are now left with hardware that simply can not be updated to include the HX2 codecs. 这不是硬件问题——硬件过去是，现在也是. 只是AE3更新启用了HX2兼容性, 还有很多其他特点, 被拿走了.

遗留的NDI齿轮?

Now, in early 2024, I see several new NDI products coming to market that start to dispense with HX1. This means these companies are choosing what parts of NDI they want to include in their hardware, 以及他们不想包含的兼容性. 我联系了NDI支持部门，得到的答复是“专门支持HX1” （或任何格式） 很大程度上取决于不同的供应商和制造商 选择 将NDI技术应用到产品中. Some do provide backwards compatibility with support for 所有 flavors of HX while some only 限制的支持 到HX2和/或HX3.”

这有可能打破产品上NDI徽章的承诺. It will no longer mean the interoperability and reliability it has meant for nearly a decade. 这个NDI工具能和那个工具一起工作吗? 你可能不知道，因为NDI许可组织并没有强制执行“标准”.“他们说，他们允许被许可方挑选, “限制支持”到他们想要包含的部分.

NDI支持继续说, “check with the manufacturers of your current HX1 cameras to see if there might be firmware upgrades available to support HX2/HX3.”

标准怎么了？?

“标准”不应该是这样工作的.

TV manufacturers that have the HDMI logo on their TV do not get to pick and 选择 which video resolutions they support—say, 旧的720p标准的下降能力. 以太网交换机不会放弃对旧的10/100标准的支持. Wi-Fi接入点不会掉线2.4 ghz 802.11b g或n因为它们更老更慢. 一个标准意味着所有的都包括在内. 向后兼容的.

This lack of enforcement 符合标准的 could potenti所有y mean that gear bought today may not work with other gear bought today, 还是明天, 因为被许可方可能不包括您需要的兼容性部分. 你能在不知道你的设备明天是否兼容的情况下投资一个标准吗? 如果这成为常态，人们就会回避. This is what NDI risks by 所有owing licensees to “限制的支持” and 选择 what parts of the NDI standard they want to implement.

竞争协议

此外，NDI现在面临着竞争. While NDI has been the sole interoperable data interchange solution for networked video for many years, Dante和SMPTE现在正以他们自己的“IP视频”标准追赶NDI. Dante AV has a huge established base of audio use as well as proven reliability and robustness. Dante AV delivers video-over-IP that integrates with any of the thousands of Dante audio products already on the market.

SMPTE ST 2110 is a much higher-bandwidth, but established standard for IP video interoperability. 其优点是它是任何用户都可以设计的SMPTE标准. 比如SMPTE时间码，或者SMPTE颜色条.  SMPTE 2110支持非压缩视频，提供卓越的视频质量. SMPTE 2110分离视频, audio, 并将辅助数据转换成不同的流, 使您能够独立地管理和路由生产的不同元素.

Dante AV and SMPTE 2110 are much newer and far fewer video tools leverage these standards into their hardware, 但IP视频仍处于全球整合的起步阶段. The vast majority of video production still uses SDI, HDMI, and fiber point-to-point connections.

NDI runs the risk of fumbling the b所有 on the 20-yard line—squandering the nearly decade lead they have in IP video by not enforcing that licensees integrate 所有 符合标准的. I write this in the hope that they re-establish what the NDI standard means: that to license NDI, 并显示NDI徽章, 产品必须100%兼容.