CMU School of Drama


Thursday, January 22, 2026

How Long Can An HDMI Cable Be Before You Start Losing Quality?

www.slashgear.com: Whether you're setting up a gaming console or installing a home theater system, choosing the right HDMI cable is an important part of the process. Depending on the size of your space, you may need to use longer cables, especially if you're having to reach across the room or even into another room.

4 comments:

Violet K said...

Even having taken an electrical engineering class and learning how data gets transmitted over wires, I still expect every HDMI cable no matter how long to function perfectly, so this article was a good reminder that it's not limitless. I had never heard of active HDMI cables but it seems like they can increase the range of an HDMI cable considerably. I wonder if media departments will start to use those, or if things like ethernet are so much better that there is really no reason to try and continue using HDMI. I also had never really stopped to think about fiber optic cables, and how they are transmitting information through light which is pretty incredible. Although things like fiber optic cables have pretty limited use in theatrical spaces as one run in with a scissor lift and they're toast. Though at the end of the day if you really need to send video over extremely long distances, HDMI probably shouldn't be your first choice.

Eliza Earle said...

Cables are something that you just believe will work no matter how long or far it is supposed to go. If someone handed me several extension cords to reach the needed length I could understand there being a small degradation in signal as the cord is made to be longer. What I truly find interesting is that they make cables that are longer than will sustain effective graphics which causes the need to buy specific extenders that allow for the cable to properly carry the signal. I did want to learn more about the different ways that HDMI cables are made to extend their range. The article mentioned that some HDMI cables send data a light instead of signal to increase the signal of specifically video feed. Active cables also include capabilities to draw power from the device they are connecting to in order to strengthen their own signal as if they have a symbiotic relationship with the electronics they are attached to.

Octavio Sutton said...

Knowing the specs of your cabling is super important for any technician to know. The fact that XLR, DMX, Ethernet, HDMI, etc. can only transmit data over as certain amount of distance before the signal starts breaking down is super important information. If you need to run a snake for a long distance, you should be aware of what the cable requirements are. I have not done much work with HDMI but reading more about it has been really interesting. I did not know that active HDMI cable was a thing. It has components inside of it that allow the signal to travel much farther than passive HDMI. What’s more, the data that you are trying to send across it has a lot to do with how well it travels. If it is a small video it will handle the distance a lot better than a high resolution video. I would love to do more media work in the future so that I can learn more about the different tech that is used in theatre and live entertainment.

Jordan G said...

When I clicked on this article I wasn't really sure what I was about to read, as I already knew that the type of single being sent and the distance to travel are major determining factors. Which is why the title of this article intrigued me. Due to my understand that I have mentioned I knew that there isn't an exact answer to how long and different type of HDMI cable could be before it becomes ineffective. A part of me hoped that this article would attempt to give a static answer, but I knew that this most likely would not happen. Ultimately after reading this article my suspicions were correct. This article did not attempt to proved a single number for how long a HDMI cable could be. Instead this article was educational, and talked about data transference as well as the different types of HDMI cables that exist. Additionally the article also talked about the technologies that exist to extend HDMI cable usage as well as what devices are need to create data transference between HDMU cables, and other cable types. The title of this article presented what may seem like an easy question to those you are not knowledge on the subject. When in actually it is the simplicity of the title that shows the whole issue of audio, visual, or light managing data transference. Those of us who know about these functions see past the simplicity of this articles title, and know going into it that there sadly is not correct answer.