Useful `ffmpeg` commands

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** ffmpeg command to convert any video to a format which is widely known by older devices (Tvs, etc ...)
ffmpeg -i input.mp4 -vf "fps=24" -c:v libx264 -crf 23 -maxrate 2M -bufsize 2M -c:a aac -b:a 192k output.mp4


** ffmpeg Command to reduce the file size of a video while preserving good quality
ffmpeg -i test.mov -vf "scale=-1:720" -r 24 -c:v libx264 -crf 28 -preset medium -c:a aac -b:a 128k output.mp4

** ffmpeg command to reduce the file size of an image, scale down the resolution to 480p, low quality
ffmpeg -i input.jpg -vf "scale=-1:480" -preset medium -q:v 4 output.jpg

• -i input.mp4: Specifies the input video file.
• -vf "fps=24": Sets the output frame rate to 24 frames per second.
• -c:v libx264: Specifies the video codec as H.264, which is widely supported by TVs.
• -crf 23: Sets the Constant Rate Factor (CRF) for video quality. Lower values result in higher quality but larger file sizes. A value of around 23 provides a good balance between quality and file size.
• -maxrate 2M -bufsize 2M: Sets the maximum bitrate and buffer size to 2 Mbps, ensuring compatibility with weaker devices.
• -c:a aac -b:a 192k: Specifies the audio codec as AAC with a bitrate of 192 kbps.
• output.mp4: Specifies the output file name.