Re: [FFmpeg-devel] Add Mediacodec audio decoders support

["Rémi Denis-Courmont" <remi@remlab.net>]

Le tiistaina 16. heinäkuuta 2024, 18.48.06 EEST Cosmin Stejerean via ffmpeg-
devel a écrit :
> To add another data point, the platform decoders might also be more secure
> due to sandboxing. I believe as of Android Q the software decoders provided
> by MediaCodec have been moved to run within a constrained sandbox.

Platform decoders are in all likelihood strictly less secure than software 
decoders. Software decoders will run in a user-space sandboxed within their 
respective application. Platform decoders will run in a more privileged system 
service, with direct access to a kernel driver in EL1, through that to the 
firmware running on the video DSP.

More performant and energy-efficient. But also way way less secure.

The only viewpoint whence this is more secure, is the content publisher's: 
this model enables DRM with hardware pass-through (but that does not even 
apply if you use FFmpeg as the front end).

-- 
雷米‧德尼-库尔蒙
http://www.remlab.net/



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