1. libsvtav1_100fps

ffmpeg -i /Users/macm2/Documents/录屏/2024-07-03_21-18-00.mkv -c:v libsvtav1 -crf 32 -pix_fmt yuv420p -an -f avif output1.avif

2. librav1e_3fps

ffmpeg -i /Users/macm2/Documents/录屏/2024-07-03_21-18-00.mkv -c:v librav1e -crf 32 -pix_fmt yuv420p -an -f avif output2.avif

3. libaom-av1_0.3fps

ffmpeg -i /Users/macm2/Documents/录屏/2024-07-03_21-18-00.mkv -c:v libaom-av1 -crf 32 -pix_fmt yuv420p -an -f avif output3.avif

4. 直接改变封装格式

ffmpeg -i 1.mp4 -c copy -f avif 1.avif

5. 倍速4倍

ffmpeg -i /Users/macm2/Documents/录屏/2024-07-05_16-54-12.mp4 -filter:v "setpts=0.25*PTS" 2024-07-05_16-54-12-4s.mp4

ffmpeg -i /Users/macm2/Documents/录屏/2024-07-05_16-54-12-4s.mp4 -s 0 -t 20 -c copy 2024-07-05_16-54-12-4s-y.mp4

6. 查询支持的编码器

ffmpeg -encoders
 # 编码器用法
ffmpeg -h encoder=av1_qsv

7. ffmpeg生成关键帧

ffmpeg -i "input.mp4" -vf "select='eq(pict_type\,I)'" -vsync vfr output_%03d.png

mac编码程序
handbrake