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What's the situation now on 120Hz recording in games and elsewhere?

Posted: 11 Aug 2021, 16:14
by RonsonPL
Hi

This topic will be mostly about gaming, cause camera recording can have issues with blur (shutter speed settings etc.)

Youtube only allows to get 120fps by a trick. Record in slow motion, upload as 60fps at 50% speed, and the viewer sets the playback speed to 2.0x
Tried googling for some content but :|
It's really hard to find anything.

Help me get up to date

1. Is there a way to record 120fps easily using hardware integrated in GPU, so good image quality and almost no CPU performance degradation?
2. If so, which cards allow for that?
3. If my ancient graphics card doesn't support it, what's the chance for CPU?
- Is it possible to record uncompressed video during gaming, to encode it later on? If yes, does it work with SSDs or it still requires a RAM disk? (Tried long time ago, good SATA SSD was capable of 300MB/s write speed but it didn't work even at 540p at 70MB/s)
- if it's doable, does it require certain specs, like 6core would work, but 4 cores not etc?


Then of course. Higher refreshrates. Not sure if framerate is capped by hardware or it's technically possible to record at any framerate as long as software allows for that and it's within bandwidth capabilities of the hardware.

Re: What's the situation now on 120Hz recording in games and elsewhere?

Posted: 13 Aug 2021, 03:44
by RealNC
RonsonPL wrote:
11 Aug 2021, 16:14
1. Is there a way to record 120fps easily using hardware integrated in GPU, so good image quality and almost no CPU performance degradation?
2. If so, which cards allow for that?
3. If my ancient graphics card doesn't support it, what's the chance for CPU?
- Is it possible to record uncompressed video during gaming, to encode it later on? If yes, does it work with SSDs or it still requires a RAM disk? (Tried long time ago, good SATA SSD was capable of 300MB/s write speed but it didn't work even at 540p at 70MB/s)
- if it's doable, does it require certain specs, like 6core would work, but 4 cores not etc?
It's doable. I can record 120FPS with OBS using nvenc to offload encoding to my GPU (a 980 Ti.) You aren't even limited to 120FPS. You can do 180FPS, 240FPS, or even higher, as long as your GPU's video encoder is fast enough, and also your CPU is fast enough to actually grab the frames from the game at those speeds.

Re: What's the situation now on 120Hz recording in games and elsewhere?

Posted: 14 Nov 2021, 14:17
by Chief Blur Buster
IndiiOw wrote:
14 Nov 2021, 09:46
How do I know if my CPU is fast enough to sustain that capacity?
It’s usually more the GPU responsibility for streaming, not the CPU. A good RTX card will have no problem streaming without a significant drop in frame rate — If your recent NVIDIA RTX GPU already can far exceed 120fps, there is usually no issue streaming at 120 if your Internet connection is fast enough.

You will have to check experienced streamers. I recommend the Discord channels that covers this such as HalfwayDead’s as well as MonitorEnthusiasts. Some of them have an area for streamers who are discussing how to do high-frame-rate streaming, and the system requirements.

We welcome streamers to post here to exchange ideas too!

So I’ll let others chime in, if there are others reading.