AI upscaled to 4k from a quality 1080p source, then increased framerate from 24fps to 48fps using TensorRT rife v4.6.

TensorRT RIFE motion interpolation is a combination of TensorRT and RIFE that enables real-time video frame interpolation with high quality. It is a TensorRT plugin for Vapoursynth, a video processing framework, that can be used for both transcoding and real-time playback modes. The interpolation quality, performance, and memory usage are determined by the AI model used. Model 4.6 provides higher quality but is slower than model 4.4, which requires less memory.

The frame rate of a film is the number of still images that are displayed per second to create the illusion of motion. The higher the frame rate, the smoother the playback, and the more realistic the motion appears. Here are some differences between 24, 30, 48, 60, and 120 FPS in movies:

24 FPS: This is the standard frame rate for movies. It is good for creating a cinematic experience and is not suitable for gaming. However, it can appear choppy during fast-paced action scenes.

30 FPS: This frame rate is commonly used in television broadcasts and is suitable for creating a smooth and natural-looking video.

48 FPS: This frame rate is used in some movies to create a more immersive and realistic experience. It provides smoother playback and is ideal for action-packed scenes.

60 FPS: This is the standard frame rate for video playback and has been the standard for more than 30 years. It provides a smooth and comfortable viewing experience.

90 FPS: This frame rate is not commonly used in movies or television. It is mostly used in gaming to provide a more immersive experience.

Please note that higher frame rates require more processing power and storage space. Also, the choice of frame rate depends on the type of content and the desired viewing experience.

Complete name                  : Nice.Dreams.1981.1080p.WEB.H265-AI.UpscaledUHD.48FPS-DirtyHippie.mkv
Format                         : Matroska
Format version                 : Version 4 / Version 2
File size                      : 12.0 GiB
Duration                       : 1 h 27 min
Overall bit rate               : 19.6 Mb/s
Frame rate                     : 48.000 FPS
Encoded date                   : 2023-11-02 03:12:08 UTC
Writing application            : mkvmerge v79.0 ('Funeral Pyres') 64-bit
Writing library                : libebml v1.4.4 + libmatroska v1.7.1 / Lavf60.14.101
VIDEOAI                        : Enhanced using alq-13; and recover original detail at 25. Changed resolution to 3840x2160

Video
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Format                         : HEVC
Format/Info                    : High Efficiency Video Coding
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Codec ID                       : V_MPEGH/ISO/HEVC
Duration                       : 1 h 27 min
Bit rate                       : 19.4 Mb/s
Width                          : 3 840 pixels
Height                         : 2 144 pixels
Display aspect ratio           : 16:9
Frame rate mode                : Variable
Frame rate                     : 48.000 FPS
Original frame rate            : 47.619 FPS
Color space                    : YUV
Chroma subsampling             : 4:2:0
Bit depth                      : 8 bits
Bits/(Pixel*Frame)             : 0.049
Stream size                    : 11.8 GiB (99%)
Default                        : No
Forced                         : No
Color range                    : Limited
Matrix coefficients            : BT.709

Audio
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Format                         : E-AC-3
Format/Info                    : Enhanced AC-3
Commercial name                : Dolby Digital Plus
Codec ID                       : A_EAC3
Duration                       : 1 h 27 min
Bit rate mode                  : Constant
Bit rate                       : 224 kb/s
Channel(s)                     : 2 channels
Channel layout                 : L R
Sampling rate                  : 48.0 kHz
Frame rate                     : 31.250 FPS (1536 SPF)
Bit depth                      : 32 bits
Compression mode               : Lossy
Stream size                    : 140 MiB (1%)
Language                       : English
Service kind                   : Complete Main
Default                        : Yes
Forced                         : No

Text
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Bit rate                       : 73 b/s
Frame rate                     : 0.237 FPS
Count of elements              : 1232
Stream size                    : 46.3 KiB (0%)
Default                        : No
Forced                         : No