Standard-definition television ( SDTV):.Televisions are of the following resolutions: It is about 70 Mpix, which is currently highest-resolution single-sensor digital cinema camera (as of January 2012) IMAX, including IMAX HD and OMNIMAX: approximately 10,000×7,000 (7,000 lines) resolution.

Sequences from newer films are scanned at 2,000, 4,000, or even 8,000 columns, called 2K, 4K, and 8K, for quality visual-effects editing on computers.1920×1080 : HDV (miniDV), AVCHD, HD DVD, Blu-ray, HDCAM SR.720x576 : Widescreen DVD (anamorphic) (PAL/SECAM).720x576 : D-VHS, DVD, miniDV, Digital8, Digital Betacam (PAL/SECAM).720×480 : Widescreen DVD (anamorphic) (NTSC).720×480 : D-VHS, DVD, miniDV, Digital Betacam (NTSC).768×576 : Analog broadcast limit ( PAL, SECAM).700×480 : Enhanced Definition Betamax, Analog broadcast limit ( NTSC).460×480 : Betacam SP, Umatic SP, NTSC (Over-The-Air TV).A low quality 480p will struggle to make it at 1080p.To fit the player perfectly, encode at these resolutions: A high bitrate 720p video can look good at 1080p and maybe work at 4k. The end result is going to depend on your source footage. ffmpeg -i input.mp4 -vf scale=640x480:flags=lanczos -c:v libx264 -preset slow -crf 21 output_compress_480p.mp4Īll you need to do is change the scale= to the dimension you want, then change the output to indicate the video dimensions. To downscale video all you need to know is popular dimensions.

To upscale to 4k video: ffmpeg -i input.mp4 -vf scale=3840x2560:flags=lanczos -c:v libx264 -preset slow -crf 21 output_compress_4k.mp4 Downscale with FFmpeg To upscale a video to 1080p whilst encoding it: ffmpeg -i input.mp4 -vf scale=1920x1080:flags=lanczos -c:v libx264 -preset slow -crf 21 output_compress_1080p.mp4 Whilst Lanczos in most cases wont be the sharpest it combines sharpness with smooth to make the footage look better overall, Avoiding blocky footage. For an excellent source on resampling methods go here. This uses FFmpeg scaling with Lanczos resampling.

To change a video file to be 1080p in FFmpeg: ffmpeg -i input.mp4 -vf scale=1920x1080:flags=lanczos output_1080p.mp4 Here are some FFmpeg commands to help you out: Upscale with FFmpeg Making a video smaller (downscaling) or bigger (upscaling) with FFmpeg is actually very easy.

Ffmpeg resize video to 720p