Large clean references with deliberately downscaled (and optionally JPEG-degraded) inputs for testing upscalers, super-resolution models, and enlarge-without-blur pipelines.
Clean 1024×1024 reference for super-resolution base A. Upscale the smaller inputs in this group toward this ground truth.
Bicubic downscale to 256×256 from the 1024px reference. Use as a super-resolution input.
Bicubic downscale to 128×128 from the 1024px reference. Use as a super-resolution input.
Bicubic downscale to 64×64 from the 1024px reference. Use as a super-resolution input.
256×256 bicubic downscale further JPEG-compressed at quality 35: a harder super-resolution input with artefacts.
Clean 1024×1024 reference for super-resolution base B. Upscale the smaller inputs in this group toward this ground truth.
Bicubic downscale to 256×256 from the 1024px reference. Use as a super-resolution input.
Bicubic downscale to 128×128 from the 1024px reference. Use as a super-resolution input.
Bicubic downscale to 64×64 from the 1024px reference. Use as a super-resolution input.
256×256 bicubic downscale further JPEG-compressed at quality 35: a harder super-resolution input with artefacts.
The input a super-resolution tool is given: the published clip /files/video/comfy-realism-v1/cafe-barista.mp4 reduced from 640x480 to 160x120 by an exact 4x area downscale, over all 49 frames at 24.0 fps. Because the reduction is an exact integer factor of a clip that is already in this catalogue, anything a tool produces from this file can be MEASURED against the original rather than judged by eye. For reference, a plain bicubic enlargement back to 640x480 scores 30.791 dB PSNR and 0.911 SSIM against that original - the number any model has to beat to be worth running.
The 160x120 input in this group restored to 640x480 by Real-ESRGAN x4plus (BSD-3-Clause), frame for frame with all 49 frames intact, so it compares directly against the published ground truth /files/video/comfy-realism-v1/cafe-barista.mp4. Measured with ffmpeg's own filters it scores 30.639 dB PSNR and 0.941 SSIM; the same degraded input enlarged by plain bicubic scores 30.791 dB and 0.911, so the two metrics DISAGREE: -0.15 dB of PSNR against it, +0.0300 of SSIM for it. That is the signature of a perceptual upscaler - it invents texture, which restores structure while moving individual pixels further from the original, and it is why a super-resolution result reported as one number is not reportable. Both figures are measurements against the same original, which is what makes them comparable at all.
The input a super-resolution tool is given: the published clip /files/video/comfy-realism-v1/cat-window.mp4 reduced from 640x480 to 160x120 by an exact 4x area downscale, over all 49 frames at 24.0 fps. Because the reduction is an exact integer factor of a clip that is already in this catalogue, anything a tool produces from this file can be MEASURED against the original rather than judged by eye. For reference, a plain bicubic enlargement back to 640x480 scores 32.598 dB PSNR and 0.917 SSIM against that original - the number any model has to beat to be worth running.
The 160x120 input in this group restored to 640x480 by Real-ESRGAN x4plus (BSD-3-Clause), frame for frame with all 49 frames intact, so it compares directly against the published ground truth /files/video/comfy-realism-v1/cat-window.mp4. Measured with ffmpeg's own filters it scores 31.398 dB PSNR and 0.932 SSIM; the same degraded input enlarged by plain bicubic scores 32.598 dB and 0.917, so the two metrics DISAGREE: -1.20 dB of PSNR against it, +0.0150 of SSIM for it. That is the signature of a perceptual upscaler - it invents texture, which restores structure while moving individual pixels further from the original, and it is why a super-resolution result reported as one number is not reportable. Both figures are measurements against the same original, which is what makes them comparable at all.
The input a super-resolution tool is given: the published clip /files/video/comfy-realism-v1/truck-depot.mp4 reduced from 640x480 to 160x120 by an exact 4x area downscale, over all 49 frames at 24.0 fps. Because the reduction is an exact integer factor of a clip that is already in this catalogue, anything a tool produces from this file can be MEASURED against the original rather than judged by eye. For reference, a plain bicubic enlargement back to 640x480 scores 24.913 dB PSNR and 0.793 SSIM against that original - the number any model has to beat to be worth running.
The 160x120 input in this group restored to 640x480 by Real-ESRGAN x4plus (BSD-3-Clause), frame for frame with all 49 frames intact, so it compares directly against the published ground truth /files/video/comfy-realism-v1/truck-depot.mp4. Measured with ffmpeg's own filters it scores 25.299 dB PSNR and 0.842 SSIM; the same degraded input enlarged by plain bicubic scores 24.913 dB and 0.793, so it beats bicubic on both, by +0.39 dB and +0.0490 SSIM. Both figures are measurements against the same original, which is what makes them comparable at all.
The input a super-resolution tool is given: the published clip /files/video/comfy-realism-v1/kitchen-chef.mp4 reduced from 640x480 to 160x120 by an exact 4x area downscale, over all 49 frames at 24.0 fps. Because the reduction is an exact integer factor of a clip that is already in this catalogue, anything a tool produces from this file can be MEASURED against the original rather than judged by eye. For reference, a plain bicubic enlargement back to 640x480 scores 27.165 dB PSNR and 0.861 SSIM against that original - the number any model has to beat to be worth running.
The 160x120 input in this group restored to 640x480 by Real-ESRGAN x4plus (BSD-3-Clause), frame for frame with all 49 frames intact, so it compares directly against the published ground truth /files/video/comfy-realism-v1/kitchen-chef.mp4. Measured with ffmpeg's own filters it scores 28.023 dB PSNR and 0.906 SSIM; the same degraded input enlarged by plain bicubic scores 27.165 dB and 0.861, so it beats bicubic on both, by +0.86 dB and +0.0450 SSIM. Both figures are measurements against the same original, which is what makes them comparable at all.
The input a super-resolution tool is given: the published clip /files/video/comfy-realism-v1/game-keep.mp4 reduced from 640x480 to 160x120 by an exact 4x area downscale, over all 49 frames at 24.0 fps. Because the reduction is an exact integer factor of a clip that is already in this catalogue, anything a tool produces from this file can be MEASURED against the original rather than judged by eye. For reference, a plain bicubic enlargement back to 640x480 scores 34.952 dB PSNR and 0.906 SSIM against that original - the number any model has to beat to be worth running.
The 160x120 input in this group restored to 640x480 by Real-ESRGAN x4plus (BSD-3-Clause), frame for frame with all 49 frames intact, so it compares directly against the published ground truth /files/video/comfy-realism-v1/game-keep.mp4. Measured with ffmpeg's own filters it scores 34.455 dB PSNR and 0.923 SSIM; the same degraded input enlarged by plain bicubic scores 34.952 dB and 0.906, so the two metrics DISAGREE: -0.50 dB of PSNR against it, +0.0170 of SSIM for it. That is the signature of a perceptual upscaler - it invents texture, which restores structure while moving individual pixels further from the original, and it is why a super-resolution result reported as one number is not reportable. Both figures are measurements against the same original, which is what makes them comparable at all.
The input a super-resolution tool is given: the published clip /files/video/comfy-realism-v1/mountain.mp4 reduced from 640x480 to 160x120 by an exact 4x area downscale, over all 49 frames at 24.0 fps. Because the reduction is an exact integer factor of a clip that is already in this catalogue, anything a tool produces from this file can be MEASURED against the original rather than judged by eye. For reference, a plain bicubic enlargement back to 640x480 scores 34.359 dB PSNR and 0.915 SSIM against that original - the number any model has to beat to be worth running.
The 160x120 input in this group restored to 640x480 by Real-ESRGAN x4plus (BSD-3-Clause), frame for frame with all 49 frames intact, so it compares directly against the published ground truth /files/video/comfy-realism-v1/mountain.mp4. Measured with ffmpeg's own filters it scores 32.503 dB PSNR and 0.92 SSIM; the same degraded input enlarged by plain bicubic scores 34.359 dB and 0.915, so the two metrics DISAGREE: -1.86 dB of PSNR against it, +0.0050 of SSIM for it. That is the signature of a perceptual upscaler - it invents texture, which restores structure while moving individual pixels further from the original, and it is why a super-resolution result reported as one number is not reportable. Both figures are measurements against the same original, which is what makes them comparable at all.
