hd codecs doesn't work with bless or abattercamera
this is mentioned earlier

anyway
you can create a script file which replaces all the dsp libraries and libgstdsp.so
before launching the app
and re put the hd codecs again after exiting it

but you need to get the old ones
uninstall hd-codecs then backup the original ones including libgstdsp.so then reinstall hd-codecs
then gather the newly installed libraries to a folder or so
and create that script

don't forget to point to that script file by modifying the .desktop file
just like what i did

hope it helps