HDMI 2.1a and What Comes After
Embed This Widget
Add the script tag and a data attribute to embed this widget.
Embed via iframe for maximum compatibility.
<iframe src="https://cablefyi.com/iframe/guide/hdmi-future/" width="420" height="400" frameborder="0" style="border:0;border-radius:10px;max-width:100%" loading="lazy"></iframe>Paste this URL in WordPress, Medium, or any oEmbed-compatible platform.
https://cablefyi.com/guide/hdmi-future/Add a dynamic SVG badge to your README or docs.
[](https://cablefyi.com/guide/hdmi-future/)Use the native HTML custom element.
Source-Based Tone Mapping, HDMI 2.2 rumors, and the future of TV connectivity.
## HDMI 2.1a: Source-Based Tone Mapping
The main addition in 2.1a is SBTM — letting the source device (GPU, console) handle HDR tone mapping instead of the TV. This ensures consistent HDR across different displays without calibration.
## What's Next for HDMI?
The HDMI Forum hasn't announced 2.2, but the industry needs:
- **Higher bandwidth**: 80+ Gbps to match DisplayPort 2.1
- **Better HDR**: Dynamic metadata improvements beyond HDR10+
- **Lower latency**: Sub-1ms for cloud gaming
- **Fiber optic HDMI standardization**: Currently proprietary
## The USB-C Challenge
USB-C with DP Alt Mode can carry HDMI signal via protocol conversion. As more TVs add USB-C ports, the HDMI connector itself may become less common — even if the HDMI protocol continues. Samsung's 2024 TVs already have USB-C input.
## Prediction
HDMI will remain the TV standard for at least another decade, but the connector form factor may gradually shift to USB-C for thin devices.