FFMPEG installed but not found

Question

I'm trying to install pHash , but when I execute ./configure this message is returned:

...

*** Configuring video Hash ***

checking whether FFmpeg is present... checking for avcodec_alloc_frame in -lavcodec... no
configure: error: 

*** libavcodec not found.
You need FFmpeg. Get it at <http://ffmpeg.org/>

But FFMPEG is correctly installed, in fact executing ffmpeg it returns:

ffmpeg version 3.0.2 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
  configuration: 
  libavutil      55. 17.103 / 55. 17.103
  libavcodec     57. 24.102 / 57. 24.102
  libavformat    57. 25.100 / 57. 25.100
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 31.100 /  6. 31.100
  libswscale      4.  0.100 /  4.  0.100
  libswresample   2.  0.101 /  2.  0.101
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

Use -h to get full help or, even better, run 'man ffmpeg'

Why this happens?

UPDATE:

libavcodec-dev is already installed:

luca@luca-OptiPlex-7040:~/Downloads/pHash-0.9.6$ sudo apt-get install libavcodec-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
libavcodec-dev is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 74 not upgraded.

and:

luca@luca-OptiPlex-7040:~/Downloads/pHash-0.9.6$ whereis libavcodec
libavcodec: /usr/local/lib/libavcodec.a /usr/include/libavcodec /usr/share/man/man3/libavcodec.3.gz

Solution

pHash looks like a dead project and has not been updated since 2013.

It references avcodec_alloc_frame which for years has been deprecated for av_frame_alloc, so it is likely incompatible with the current FFmpeg API.

You'll either have to use an ancient FFmpeg version (not recommended), or update the pHash source to use the current FFmpeg libraries properly.

If you do not need support for perceptual video hashes, then configure pHash with --enable-video-hash=no and it will omit the FFmpeg dependency.

If you're looking for audio fingerprint functionality, I recommend Chromaprint instead since FFmpeg supports it.

Comments

[llogan]

Which Ubuntu version?

[user6321]

14.IDon'tRemember (I'm not from that machine now)

[Anthony Wong]

assuming you are using 64-bit, what do you get from objdump -T /usr/lib/x86_64-linux-gnu/libavcodec.so | grep avcodec_alloc_frame?

[user6321]

000000000035e880 g DF .text 0000000000000020 LIBAVCODEC_54 avcodec_alloc_frame

[Anthony Wong]

I have run out of ideas, it's definitely working fine here.

[Michael]

does this bump the version past 0.9.7?

[Michael]

looks like this version isn't backwards compatible