Avformat parameters:
f=mpegts acodec=ac3 ab=448k ar=48000 pix_fmt=yuv420p vcodec=libx264 threads=4 b=20000000 coder=1 flags=+loop cmp=+chroma partitions=+parti8x8+parti4x4+partp8x8+partp4x4+partb8x8 me_method=umh subq=8 me_range=24 g=250 keyint=25 keyint_min=25 sc_threshold=40 i_qfactor=0.71 b_strategy=2 qcomp=0.6 qmin=10 qmax=51 qdiff=4 bf=3 refs=3 directpred=3 trellis=2 flags2=+wpred+mixed_refs+dct8x8+fastpskip+aud+bpyramid wpredp=2 vbv_maxrate=30000000 bufsize=30000K nal-hrd mvrange=511 level=41 r=25 s=1920x1080 aspect=%dar
Experimental Profile to use with a Blu-Ray authoring Software after exporting from Kdenlive. It's not yet proof to play on Hardware Players.