问题
I am trying to play from local storage an encrypted video using ExoPlayer. The command used to encrypt the video using FFMPEG is as follows:
-i /storage/emulated/0/Download/20210125_193031.mp4 -vcodec copy -acodec copy -c:v libx264 -encryption_scheme cenc-aes-ctr -encryption_key b42ca3172ee4e69bf51848a59db9cd13 -encryption_kid 09e367028f33436ca5dd60ffe6671e70 /storage/emulated/0/Download/out_enc.mp4 - the file is playable using openkey and ffplay, but it won't play on ExoPlayer
The main issue seems the PSSH box seems to be missing when generating the encrypted file
Is there a command option in order to add the PSSH box inside the mp4 file? I think that's why the ExoPlayer is unable to play the file.
来源：https://stackoverflow.com/questions/66044063/pssh-box-missing-when-generating-encrypted-files-using-ffmpeg