Is it possible to use HDMI cable to transfer files between notebooks?

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HDMI 1.3 bandwidth is over 10G. Notebook nowadays has HDMI port available. Is that possible that we use HDMI cable to hook up 2 notebook and perform file copy operation?

Chau Chee Yang

Posted 2011-03-01T10:03:22.330

Reputation: 802

Answers

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It's technically possible, as HDMI is a bidirectional interface. however, it is designed for packet streams, and not data blocks.

So, in a practical sense, from a users perspective: No, it's not possible.

polemon

Posted 2011-03-01T10:03:22.330

Reputation: 2 531

what do you mean by packet streams? how would this be a drawback more specifically?.. – Corneliu Zuzu – 2016-09-07T16:42:25.200

@CorneliuZuzu streams like bitstreams, similar to how you use RTP/RTCP for streaming media over Ethernet. HDMI provides Ethernet encapsulation which should technically work well with things like that. Regular TCP/IP connections constantly move blocks back and forth, and I don't think that the Ethernet implementation on HDMI really would work with that. – polemon – 2018-02-02T01:05:57.713

today they use hdmi to capture raw video from camera. So "technically possible" is true – Minh Nghĩa – 2019-12-22T09:35:57.883

2Yeah... It's possible, but you'd have to do some pretty low-level hacking (possibly even writing custom drivers?) to pull it off. – Dave Sherohman – 2011-03-01T12:20:41.440

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HDMI does potentially provide an Ethernet channel so that internet-enabled home theater equipment can have a one-cable solution (http://www.hdmi.org/manufacturer/hdmi_1_4/hec.aspx) but Ethernet over HDMI doesn't even come close to the available bandwidth of the HDMI interface.

– Stephanie – 2012-06-13T13:09:22.733

@Stephanie I believe this is due to wrapping Ethernet packets into HDMI packets. When lengths are not equal, they'd have to be split and rearrange, possibly buffered. I's just assumptions, though. I don't think that that kind of equipment comes with TCP stacks, it's probably implemented in firmware... – polemon – 2012-06-13T17:18:06.400

I too am interested in this. This is the highest bandwidth interface easily available to the consumer. – Milind R – 2013-12-27T08:07:54.167

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This doesn't practically help you, but apparently HDMI is being used to stack switches now:

"2 Stacking Ports (HDMI)"

Source: http://www.dell.com/us/fedgov/p/data-center-gigabit/product-compare

Kyle Brandt

Posted 2011-03-01T10:03:22.330

Reputation: 3 089

Just to let you know I shamelessly copied one of your blog posts in my answer here.

– terdon – 2013-05-05T21:16:39.973

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It is possible, there are HDMI cables that support data, or even "internet" sharing. Both devices must have support for data transfer.

The one and only

Posted 2011-03-01T10:03:22.330

Reputation: 21

4Citation needed. – Mokubai – 2013-09-23T21:55:56.907

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In theory, you could encode said data into some form of media (audio, video, ) and transfer it through the HDMI and decode it on the target computer.

But it’d be much easier to upload the file to the cloud (Google drive, Dropbox, etc) and download it on the target computer.

Jabster28

Posted 2011-03-01T10:03:22.330

Reputation: 1

1Can the HDMI ports on notebooks receive media signals in a way that is accessible to the end-user (or developer), then? – bertieb – 2018-08-18T19:07:48.983

.. so a Raspberry would output to a laptop screen? – weberjn – 2019-02-21T23:16:57.433

@weberjn Unless the laptop has been sufficiently modded (custom drivers maybe?), no. – Jabster28 – 2019-03-17T19:05:19.687

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No its not currently possible to do that, HDMI (High Definition Multimedia Interface) is for video & audio streams only

anthonysomerset

Posted 2011-03-01T10:03:22.330

Reputation: 459

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No. HDMI is a media cable only.

Joe Taylor

Posted 2011-03-01T10:03:22.330

Reputation: 11 533