x264 and adaptative quantisation ... ???

[Sagittaire]

1) adaptative quantisation is h264 compliant ?

2) for x264 vs NDAVC, PSNR comparison x264 is very good but not SSIM comparison : x264 potential is very high but HVS optimisation seem possible ?

3) possible to transcode masking from libavcodec in x264 ?

[bond]

1) adaptative quantisation is h264 compliant ?yes, nerodigital supports it via the "psychovisual enhancement" option

2) for x264 vs NDAVC, PSNR comparison x264 is very good but not SSIM comparison : x264 potential is very high but HVS optimisation seem possible ?you mean x264 could be tuned more to match the ssim visual system? propably nd is tuned that way...

3) possible to transcode masking from libavcodec in x264 ? what do you mean with masking