[FFmpeg-user] OpenSSL overhead

Reindl Harald h.reindl at thelounge.net
Mon Aug 19 19:04:28 EEST 2019

Am 19.08.19 um 17:45 schrieb Simon Brown:
> further to my question the other day about getting FFMpeg built with
> openssl, I was wondering what the overhead is on generating an rtmps stream
> from a normal TS, rather than an rtmp stream.  When I streamed to Facebook
> live using FFmpeg and an rtmps stream the live video had significant
> breakup on it, yet the ffmpeg output showed no warnings or errors about
> broken macro blocks or concealing errors, etc.
> My command line is:
> ffmpeg -re -i udp://@:65224 -codec copy -bsf:a aac_adtstoasc -f flv -fflags
> nobuffer rtmps://facebookliveurl
> This was running ffmpeg as compiled from the git head last week.  The
> stream coming in on the udp port is a local stream - ie no network issues.

on modern hardware TLS has no overhead at all after the handshake
google for aes-ni

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