This was the file extension’s burden. While the extension .mov told the computer "I am a QuickTime movie," it didn't tell the truth about the codec.
ffmpeg -i input.mp4 -c:v prores_ks -profile:v 3 -pix_fmt yuv422p10le output.mov prores file extension
She watched the upload speed. It was fast. Too fast. This was the file extension’s burden
| Resolution | ProRes Proxy | ProRes LT | ProRes 422 | ProRes HQ | ProRes 4444 | |------------|--------------|-----------|------------|-----------|--------------| | 1080p (30fps) | 90 MB | 220 MB | 330 MB | 500 MB | 700 MB | | 4K (30fps) | 350 MB | 900 MB | 1.3 GB | 2.0 GB | 3.0 GB | It was fast
Right-click → Get Info → "Codecs" section.
She scrambled to re-export. She opened the settings, hovered over the Format dropdown, and selected .
