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I was trying to analyse a video with ffmpeg and it gives this error. I have referred to other sources but those solutions do not seem to work.

[NULL @ 0x24eb600] Unable to find a suitable output format for 'protocols'
protocols: Invalid argument

I have a video currently hosting on Google Cloud Storage and I want to use ffprobe to study its orientation. This is the command I use.

ffprobe -v error -show_streams -show_format https://storage.googleapis.com/bucket/filename.mp4 | grep rotation

I am currently running on Debian Jessie and I installed ffmpeg from source.

Here's my installation script

cd ffmpeg-3.4.1
./configure --enable-shared
make
make install
ldconfig

Can anyone tell me how to solve this?

Perl Deniel
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    No need for `grep`. See `ffprobe` examples in [How to extract orientation information from videos?](https://stackoverflow.com/a/41306388/1109017) – llogan May 09 '18 at 22:36

2 Answers2

1

You need to enable an additional external library for HTTPS support. FFmpeg supports several libraries:

openssl

  • package: libssl-dev (Debian/Ubuntu), openssl-devel (RHEL/CentOS)
  • ffmpeg configure option: --enable-openssl

gnutls

  • package: libgnutls28-dev (Debian/Ubuntu), gnutls-devel (RHEL/CentOS)
  • ffmpeg configure option: --enable-gnutls

LibreSSL (via libtls)

  • package: none available
  • ffmpeg configure option: --enable-libtls
llogan
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0

Looks like some protocols are missing when you build your ffmpeg. I am suspecting https is not enabled in your protocol list. Please check the list of supported protocols with ffmpeg -protocols and see whether https is on the list.

You will need to recompile ffmpeg with openssl to enable streaming video over https

Install OpenSSL

apt-get install openssl

Configure FFMPEG with OpenSSL

./configure --enable-shared --enable-openssl
Rex Low
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