HELP: zm_ffmpeg_camera.cpp:172: err: 'avcodec_decode_video2'

[espressobeanie]

Hi all,

I've been using this guide http://www.zoneminder.com/wiki/index.ph ... rom_source to build and install ZoneMinder on Debian Squeeze XFCE, however I keep getting this error:

zm_ffmpeg_camera.cpp:172: error: 'avcodec_decode_video2' was not declared in this scope
make[1]: *** [zm_ffmpeg_camera.o] Error 1

I have no clue what this means or how to fix this. Can anyone help? I'm trying to get this up and running asap because break-ins are pretty common where I live. Thanks.



I have no idea if this helps. When I type ./configure, everything comes up 'yes' for checking except these:

checking whether we are cross compiling...no
checking for _Bool... no
checking for struct sigcontext.exp... no
checking whether gcc needs -traditional...no
checking whether stat accepts an empty string... no
checking for _doprnt... no
checking for ioctlsocket... no
checking for x264_predict_16x16_init in -lavcore... no
checking pcre/pcre.h usability... no
checking pcre/pcre.h presence... no
checking for pcre/pcre.h...no
configure: WARNING: Expect is required for automatic event uploading using sftp

I'm guessing if a function was 'not declared in this scope, there must be a missing ffmpeg codec or something, but I'm not sure. Just to double check, I went back and install all of the libav files for ffmpeg. For starters is this an FFMPEG error or a package issue?

[pfy42]

Just solved this one, it wasn't too easy and looks like it could have many different causes

In the end it was caused by my haste rushing in headfirst and not paying attention while compiling libraries. There were multiple conflicting versions all over. In the end I ended up

apt-get remove ffmpeg ffmpeg-dev libavcodec-dev

(and a few others, basically anything I could find)

And then manually compiling ffmpeg - http://www.zoneminder.com/forums/viewtopic.php?t=16628

I didn't use the script though - some stuff was different (i.e. I had to symlink /usr/local/lib/libx264.so.120 -> /usr/lib/libx264.so.120 instead of ...so.107 like the script said) - I ended up compiling version 0.8.7 with the latest git of libx264

I know this isn't much to go on but hopefully it will help point you in the right direction!

[espressobeanie]

I'll definitely try that. I did use the ffmpeg from whatever version sits in the Debian repository, so I'll go back and compile ffmpeg by hand and see if that corrects the issue.