Optimizing 4K 60fps ProRes 422HQ Video Compression with HEVC using FFmpeg
If you have recently upscaled a 1080p 60fps 90-minute video to 4K and encoded it in ProRes 422HQ, you might have ended up with a large file size of 1.2TB. This article will guide you through the process of optimizing the video compression using the High Efficiency Video Coding (HEVC) standard and the FFmpeg tool.
What is HEVC?
High Efficiency Video Coding (HEVC), also known as H.265, is a video compression standard that provides better compression than its predecessor, H.264. HEVC can reduce the file size of a video by up to 50% while maintaining the same visual quality. This makes it an ideal choice for compressing 4K videos.
What is FFmpeg?
FFmpeg is a free and open-source software project that produces libraries and programs for handling multimedia data. It can be used for transcoding, streaming, and playing multimedia files. FFmpeg supports a wide range of video and audio formats, including ProRes and HEVC.
How to Optimize 4K 60fps ProRes 422HQ Video Compression with HEVC using FFmpeg
To optimize the video compression of your 4K 60fps ProRes 422HQ video, you can use the following FFmpeg command:
ffmpeg -i input.mov -c:v libx265 -crf 23 -c:a copy output.mov
Here's a breakdown of the command:
-i input.mov: This specifies the input file.-c:v libx265: This specifies the video codec to be used for the output file. In this case, we are using HEVC.-crf 23: This sets the Constant Rate Factor (CRF) for the video compression. A lower CRF value will result in a higher video quality but a larger file size. A CRF value of 23 is a good starting point for most videos.-c:a copy: This copies the audio stream from the input file to the output file without re-encoding it.output.mov: This specifies the output file.
You can adjust the CRF value to achieve the desired balance between video quality and file size. A lower CRF value will result in a higher video quality but a larger file size. A higher CRF value will result in a lower video quality but a smaller file size.
Subtitles
If your video has subtitles, you can include them in the output file using the following FFmpeg command:
ffmpeg -i input.mov -vf "subtitles=subtitle.srt" -c:v libx265 -crf 23 -c:a copy output.mov
Here, subtitle.srt is the subtitle file that you want to include in the output file.
In this article, we have covered the following topics:
- HEVC: a video compression standard that provides better compression than H.264.
- FFmpeg: a free and open-source software project that produces libraries and programs for handling multimedia data.
- How to optimize 4K 60fps ProRes 422HQ video compression with HEVC using FFmpeg.
- How to include subtitles in the output file using FFmpeg.