Graphics cards for on the fly H265 encoding questions please?

[Basil]

I am an amateur radio fan and have a modest set up for transmitting and receiving amateur TV digital pictures and videos via the `Es Hail geostationary satellite..

H265 being better quality for a given file size and bandwidth would improve my transmissions which are currently in H264 encoding.

As such I want to build a dedicated Windows PC for this purpose. Inputting a live hdmi HD video stream and outputting it in H265 format. Given the scarcity and price of graphics cards right now I have shown an interest in an EVGA GTX1070 SC2 card, used, an acquaintance is selling. Is it likely up to the job or should I look to spend more on a more modern card?

If I stick with Windows 7 Pro 64 bit which I am comfortable with, am I at a great disadvantage to moving to Windows 10 or 11? What would be the best processor and motherboard for Windows 7 and this rather specialised application, I know most later Intel processors will use some of their capability to encode H265 encoding, does having a graphics card GPU doing that render that part of the CPU's capacity redundant? I am also somewhat aware that very late processors and motherboard socketing may not play well with Windows 7 any longer.

I have a PC running an Intel i7 6700K processor on a Gigabyte H170-D3HP motherboard with 16 Gb RAM, which I am using for something else, can I improve much on that and still use Win 7 64 bit?

Thanks for reading and for any advice you might share.

 

[wither 2]

Is simply converting the h.264 to h.265 before transmission an option or do you want to directly convert and transmit the files that you are receiving without saving the files?

 

[Basil]

Ridiculous as I will sound, I do not know. I wanted to take live hdmi out of my Sony video camera an have it converted on the fly to H265 which is fed into the transmitter. I can use OBS to read an MP4 video file and let the current main PC processor convert to H264 or 265 but it's really struggling. Thanks for the reply.

 

[wither 2]

I'm trying to understand your setup. Are you receiving via your camera and then transmitting from your camera?

To do the conversion, you're going to need some horsepower and a program/app that will stream and convert at the same time.