The default for frame_skip_threshold is 0, which thus disables the libvpx
frame dropping.
Originally committed as revision 23522 to svn://svn.ffmpeg.org/ffmpeg/trunk
//convert [1,51] -> [0,63]
enccfg.rc_min_quantizer = ((avctx->qmin * 5 + 1) >> 2) - 1;
enccfg.rc_max_quantizer = ((avctx->qmax * 5 + 1) >> 2) - 1;
+ enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
//_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
if (avctx->keyint_min == avctx->gop_size)