When i build the allegro sources, i obtain this error, and i need use the allegro_video_addon
any have a solution?
sorry for my english 
make
[ 16%] Built target allegro
[ 18%] Built target allegro_primitives
[ 19%] Built target allegro_image
[ 20%] Built target allegro_font
[ 23%] Built target allegro_audio
[ 24%] Built target allegro_acodec
[ 24%] Built target allegro_ttf
[ 24%] Built target allegro_color
[ 24%] Built target allegro_memfile
[ 24%] Built target allegro_physfs
[ 26%] Built target allegro_dialog
[ 26%] Building C object addons/video/CMakeFiles/allegro_video.dir/ffmpeg.c.o
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c: In function ‘get_video_clock’:
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c:266:4: warning: implicit declaration of function ‘av_gettime’ [-Wimplicit-function-declaration]
delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
^
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c: In function ‘audio_decode_frame’:
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c:384:10: warning: implicit declaration of function ‘avcodec_decode_audio3’ [-Wimplicit-function-declaration]
len1 = avcodec_decode_audio3(is->audio_st->codec,
^
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c: In function ‘our_get_buffer’:
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c:740:4: warning: ‘avcodec_default_get_buffer’ is deprecated (declared at /usr/include/libavcodec/avcodec.h:3493) [-Wdeprecated-declarations]
int ret = avcodec_default_get_buffer(c, pic);
^
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c: In function ‘our_release_buffer’:
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c:751:4: warning: ‘avcodec_default_release_buffer’ is deprecated (declared at /usr/include/libavcodec/avcodec.h:3494) [-Wdeprecated-declarations]
avcodec_default_release_buffer(c, pic);
^
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c: In function ‘video_thread’:
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c:763:4: warning: ‘avcodec_alloc_frame’ is deprecated (declared at /usr/include/libavcodec/avcodec.h:3195) [-Wdeprecated-declarations]
pFrame = avcodec_alloc_frame();
^
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c: In function ‘stream_component_open’:
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c:925:10: warning: ‘get_buffer’ is deprecated (declared at /usr/include/libavcodec/avcodec.h:1939) [-Wdeprecated-declarations]
codecCtx->get_buffer = our_get_buffer;
^
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c:926:10: warning: ‘release_buffer’ is deprecated (declared at /usr/include/libavcodec/avcodec.h:1953) [-Wdeprecated-declarations]
codecCtx->release_buffer = our_release_buffer;
^
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c: In function ‘open_video’:
/home/chanochambure/Documentos/Instaladores/allegro5-5.1.11/addons/video/ffmpeg.c:1134:54: error: ‘AVStream’ has no member named ‘r_frame_rate’
fps = is->format_context->streams[is->video_index]->r_frame_rate;
^
addons/video/CMakeFiles/allegro_video.dir/build.make:77: recipe for target 'addons/video/CMakeFiles/allegro_video.dir/ffmpeg.c.o' failed
make[2]: *** [addons/video/CMakeFiles/allegro_video.dir/ffmpeg.c.o] Error 1
CMakeFiles/Makefile2:661: recipe for target 'addons/video/CMakeFiles/allegro_video.dir/all' failed
make[1]: *** [addons/video/CMakeFiles/allegro_video.dir/all] Error 2
Makefile:116: recipe for target 'all' failed
make: *** [all] Error 2
