[2] [[PHP]] 4.3+ が実装しています。

[FIG(quote)[
[FIGCAPTION[
[1] [CITE@en[FFmpeg Protocols Documentation]]
([TIME[2017-01-22 02:22:36 +09:00]])
<https://ffmpeg.org/ffmpeg-protocols.html#tls>
]FIGCAPTION]

> Transport Layer Security (TLS) / Secure Sockets Layer (SSL)
> The required syntax for a TLS/SSL url is:
> tls://hostname:port'''['''?options''']'''

]FIG]