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There are many programs that give real time FPS. One of the more popular ones seems to be Fraps. There are also graphics card monitoring tools, such as MSI afterburner , EVGA Precision X , etc. that can display a lot of on-screen data that is related to your GPU.
The refresh rate (Hz) of your monitor does not affect the frame rate (FPS) your GPU will be outputting. If your FPS is higher than your refresh rate, your display will not be able to display all of the frames your computer is producing. So although the refresh rate doesn’t technically limit the frame rate, it does effectively set a cap.
800x600 x 24-bit color x 30 FPS x (format) = 230,400,000 bps (230.400 Mbps) 960x720 x 24-bit color x 30 FPS x (format) = 331,776,000 bps (331.776 Mbps) 1280x960 x 24-bit color x 24.414 FPS x (format) = 480,000,000 bps (480.000 Mbps) In short, it depends on the software you are using to take the video from the camera, the type of USB connection ...
Press F12. In the bottom (console) section, click the 3 vertical dots. Select the 'Rendering' page to add it to the bottom pane. You should see 'FPS meter' 3rd item down. Update: From Chrome 80, the 'FPS Meter' checkbox is the 4th item in the list. You can also access the Rendering tab from the top-right . menu.
The higher the resolution and bit depth the more bandwidth required to send updates. There are a few optimizations VNC servers/clients already do: Only send changed regions, caching unchanged regions on the client. Copying cached regions on the client when changes do occur.
For WebKit, there are two video element attributes that you can query regularly: More explanation here. Using these, you can, for example, run a timer every second to get the values and calculate the real framerate. The two values should sum up to the total frames available in the video per played out second.
0. You need to "reencode" your subtitles. It's an option on most subtitle software, like Jubler. Check your video for fps rate (usually in tools>video information), there's a good chance your video is 23.97 and your subtitles are set for 24 or 25.
5. I'm capturing video from my webcam with the following command: ffmpeg -r 30 -f v4l2 -video_size 160x120 -i /dev/video0 output.avi. The -r option indicate the framerate I want. However, it's not that I want 30 FPS, it's just that otherwise it does not work correctly. Without framerate, the capture is very buggy (I guess it tries to capture ...
The one thing that tripped me up, however, is that VLC media player must be started after FPS Monitor; it's not enough to just stop and restart video playback. Other than that, I was able to get not only numbers but a live graph of the information I was looking for ( Scenes → Recent scenes → BENCHMARK is a good preset to use).
5. Just use ffprobe. And check for the avg_frame_rate parameter of the desired video stream. If the value of this parameter is a fraction like this. with a denominator that is not 1 then the video file has a variable frame rate. If the value is like this. be sure the stream has a constant frame rate.