Enable YARP options that depend on ffmpeg

[traversaro]

Fix #1071 .

cc @S-Dafarra

[traversaro]

On conda we are fortunatly still installing ffmpeg 4.4, as there is a compilation error with ffmpeg 5 (see robotology/yarp#2885).

For ffmpeg 4, instead we have a linking error:

ffmpegPortmonitor.obj : error LNK2019: unresolved external symbol av_freep referenced in function "protected: int __cdecl FfmpegMonitorObject::compress(class yarp
::sig::Image *,struct AVPacket *)" (?compress@FfmpegMonitorObject@@IEAAHPEAVImage@sig@yarp@@PEAUAVPacket@@@Z) [C:\src\yarp\builddev\src\portmonitors\image_compres
sion_ffmpeg\yarp_pm_image_compression_ffmpeg.vcxproj]
ffmpegPortmonitor.obj : error LNK2019: unresolved external symbol av_buffer_create referenced in function "public: virtual class yarp::os::Things & __cdecl Ffmpeg
MonitorObject::update(class yarp::os::Things &)" (?update@FfmpegMonitorObject@@UEAAAEAVThings@os@yarp@@AEAV234@@Z) [C:\src\yarp\builddev\src\portmonitors\image_co
mpression_ffmpeg\yarp_pm_image_compression_ffmpeg.vcxproj]
ffmpegPortmonitor.obj : error LNK2019: unresolved external symbol av_buffer_default_free referenced in function "public: virtual class yarp::os::Things & __cdecl
FfmpegMonitorObject::update(class yarp::os::Things &)" (?update@FfmpegMonitorObject@@UEAAAEAVThings@os@yarp@@AEAV234@@Z) [C:\src\yarp\builddev\src\portmonitors\im
age_compression_ffmpeg\yarp_pm_image_compression_ffmpeg.vcxproj]
ffmpegPortmonitor.obj : error LNK2019: unresolved external symbol av_frame_alloc referenced in function "protected: int __cdecl FfmpegMonitorObject::compress(clas
s yarp::sig::Image *,struct AVPacket *)" (?compress@FfmpegMonitorObject@@IEAAHPEAVImage@sig@yarp@@PEAUAVPacket@@@Z) [C:\src\yarp\builddev\src\portmonitors\image_c
ompression_ffmpeg\yarp_pm_image_compression_ffmpeg.vcxproj]
ffmpegPortmonitor.obj : error LNK2019: unresolved external symbol av_frame_free referenced in function "protected: int __cdecl FfmpegMonitorObject::compress(class
 yarp::sig::Image *,struct AVPacket *)" (?compress@FfmpegMonitorObject@@IEAAHPEAVImage@sig@yarp@@PEAUAVPacket@@@Z) [C:\src\yarp\builddev\src\portmonitors\image_co
mpression_ffmpeg\yarp_pm_image_compression_ffmpeg.vcxproj]
ffmpegPortmonitor.obj : error LNK2019: unresolved external symbol av_opt_set referenced in function "protected: int __cdecl FfmpegMonitorObject::setCommandLinePar
ams(void)" (?setCommandLineParams@FfmpegMonitorObject@@IEAAHXZ) [C:\src\yarp\builddev\src\portmonitors\image_compression_ffmpeg\yarp_pm_image_compression_ffmpeg.v
cxproj]
ffmpegPortmonitor.obj : error LNK2019: unresolved external symbol av_image_alloc referenced in function "protected: int __cdecl FfmpegMonitorObject::compress(clas
s yarp::sig::Image *,struct AVPacket *)" (?compress@FfmpegMonitorObject@@IEAAHPEAVImage@sig@yarp@@PEAUAVPacket@@@Z) [C:\src\yarp\builddev\src\portmonitors\image_c
ompression_ffmpeg\yarp_pm_image_compression_ffmpeg.vcxproj]
C:\src\yarp\builddev\lib\yarp\Release\yarp_pm_image_compression_ffmpeg.dll : fatal error LNK1120: 7 unresolved externals [C:\src\yarp\builddev\src\portmonitors\im
age_compression_ffmpeg\yarp_pm_image_compression_ffmpeg.vcxproj]

[traversaro]

For ffmpeg 4, instead we have a linking error:

Fixed by robotology/yarp#2886 .

[traversaro]

Unfortunatly, yarp does not support ffmpeg 5, so enabling this is problematic at the moment. Closing until robotology/yarp#2885 is fixed.