[FFmpeg-devel] support for reading / writing encrypted MP4 files

[Timothy Gu]

Hi,

Please do not top post.

On Fri, Dec 4, 2015 at 10:57 AM Eran Kornblau <eran.kornblau at kaltura.com>
wrote:

> Thank you !
>
> Opened a pull request here: https://github.com/FFmpeg/FFmpeg/pull/162
>

Please send the patches to the mailing list. See
https://github.com/FFmpeg/FFmpeg/pull/153


> I used libavutil/aes as you suggested, however, as a side note, I think it
> makes sense to move ffmpeg to use
> openssl's implementation. The reason is that openssl's EVP API makes use
> of AES-NI (https://en.wikipedia.org/wiki/AES_instruction_set)
> and is therefore expected to perform significantly better on supported
> CPUs.
>

Our AES-NI implementation is a lot faster than OpenSSL's ;)
https://gist.github.com/rcombs/2a91ab246c3a99c15b3a

Timothy