FFmpeg CENC加密mp4文件

加密：

ffmpeg -hide_banner -decryption_key 41d57428051243e489fc4a140ea7f0ad -i /Users/Downloads/a87ae6cdb4fd4149b68331d7105a2fb6.mp4 -c copy -copyts -movflags +faststart -movflags +use_metadata_tags -f mp4 -y /Users/Downloads/a87ae6cdb4fd4149b68331d7105a2fb6_2.mp4

解密：

ffmpeg -decryption_key 41d57428051243e489fc4a140ea7f0ad -i /Users/Downloads/a87ae6cdb4fd4149b68331d7105a2fb6_2.mp4 -c copy -copyts -movflags +faststart -movflags +use_metadata_tags -f mp4 -y /Users/Downloads/a87ae6cdb4fd4149b68331d7105a2fb6_3.mp4
ffprobe -decryption_key 41d57428051243e489fc4a140ea7f0ad -i /Users/Downloads/a87ae6cdb4fd4149b68331d7105a2fb6_2.mp4
ffplay -decryption_key 41d57428051243e489fc4a140ea7f0ad -i /Users/Downloads/a87ae6cdb4fd4149b68331d7105a2fb6_2.mp4

更多参数：https://www.jianshu.com/p/ea0761f6aa04