[FFmpeg-user] Protocol whitelist and SDP files

[Ben Barker]

Evening,

I have just built ffmpeg:

ffmpeg version N-78589-g5f5467e Copyright (c) 2000-2016 the FFmpeg
developers
  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)
  configuration: --prefix=/opt/ffmpeg/ffmpeg_build
--extra-cflags=-I/opt/ffmpeg/ffmpeg_build/include
--extra-ldflags=-L/opt/ffmpeg/ffmpeg_build/lib --bindir=/opt/ffmpeg/bin
--pkg-config-flags=--static --enable-gpl --enable-nonfree
--enable-libfdk-aac --enable-libfreetype --enable-libmp3lame
--enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
  libavutil      55. 18.100 / 55. 18.100
  libavcodec     57. 24.103 / 57. 24.103
  libavformat    57. 25.100 / 57. 25.100
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 32.100 /  6. 32.100
  libswscale      4.  0.100 /  4.  0.100
  libswresample   2.  0.101 /  2.  0.101
  libpostproc    54.  0.100 / 54.  0.100

There seems to be some new functionality regarding whitelisting which I can
find reference to in the mailing lists, but am still a bit fuzzy one.

Historically, I could open a locally stored SDP file using something
similar to:

ffmpeg -i tmp.sdp ......

Now however this returns me the error:

Protocol not on whitelist 'file'

There seems to be some reference to this as a possible issue here:

http://article.gmane.org/gmane.comp.video.ffmpeg.devel/208702/match=whitelist

But I'm still not sure as to what has changed, and how I could/should work
around it. Any suggestions welcome :-)