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Is there a way to Force constant 60fps?

Started by mdnpascual, September 18, 2015, 05:02:34 PM

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mdnpascual

Is there a way to do a constant 60fps recording (and not variable)?

What I meant by these is, even if the game dips below 60fps, the codec or dxtory will just put null/same frames to compensate for the missing frames.

I'm trying to make a video tutorial and i'm relying on timings. I can't rely on the frame by frame timings reliably if the game sometimes dip to 56fps and there are noticeable frame difference that jumps on the video when that happens.

If dxtory can't do these, do you know any codec or video coversion to do these? thanks.

Sarias89

So I think it is the translation of goofy Google. But I think you want a codec with the constant 60FPS recording or?

I must say something not there ... there will always be differences.
I use UtVideo codec and find the very good. You have to bear in mind the need to write the hard disk quickly enough. That means ... OS on an extra hard disk, games on an extra hard drive and recording to an extra hard drive. that would be the most optimal.

Then continue with your hardware components, the need naturally ordendlich pepper. This will vary from application to application.

One can not guarantee that you stay Konstand at 60FPS but even then. The FPS display Dxtory is another FPS than the game. Because there are always slight variations in. But DxTory robbed lately eh again FPS from home.

Fact is ... constant 60FPS are impossible.
If alternate the maximum recorded FPS .... if your hardware is 120 able to do so ... then should the small dips still be above 60FPS ...
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mdnpascual

#2
It's not that dxtory can't record smooth 60fps, but since I'm recording an emulator, the emulator will sometimes dip below 60fps.

Also I'm talking about the video having a constant 60fps due to some video editors (adobe premiere) mostly favoring a constant fps, rather than variable

my rig can handle 60fps smooth recording and have enough recording speed to handle the bandwidth (around 625MB/s combined).

I have
1) SSD on main pc
2) Raid-0 2x WD blacks on main pc
3) SSD on laptop on a gigabit switch

aznricepuff

#3
I recommend just re-encoding your recordings to CFR.

You can use ffmpeg for that.

ffmpeg -i <input_file> -filter:v fps=60 -c:v <video_codec> -c:a copy <output_file>

This will dup or drop frames as necessary to maintain a constant 60 fps.

EDIT: Fixed command line example. Forgot that you can't stream copy when using filters.

mdnpascual

thanks! will try these. Hopefully this will remove the timing discrepancy while I'm editing the video recorded