[FFmpeg-user] audio/video obfuscation

Madovsky infos at madovsky.org
Wed Jun 19 16:10:18 EEST 2019

On 6/19/2019 5:20 AM, Madovsky wrote:
> On 6/19/2019 5:15 AM, Moritz Barsnick wrote:
>> On Wed, Jun 19, 2019 at 05:02:36 -0700, Madovsky wrote:
>>> I just tried it, works well but unfortunately the player cannot play 
>>> the
>>> video at all with this option.
>>> what I'm looking for is if the player does not have the key to 
>>> decode it
>>> still can play the movie
>>> with audio and video obfuscated, like audio with frequencies modified
>>> and pixel noise.
>> Ah, so that it's still a legal stream that canb be played, but plays
>> junk?
>> I'm not aware of any standardized method to do this, nor of any way to
>> achieve this with ffmpeg. The "geq" filter can apply a function to
>> pixels (as some other filter probably can with audio), but you would
>> need a way to pass it an encryption scheme. I don't think something like
>> this is implemented or even in consideration - but I might be wrong.
>> Moritz
> a kind of encryption as when it plays without decrypt it plays junk yes.
> if anyone knows a way to do it please share thanks
practically I would like to make an obfuscation type like this

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