enccfg.g_timebase.den = avctx->time_base.den;
enccfg.g_threads = avctx->thread_count;
#if FF_API_X264_GLOBAL_OPTS
- enccfg.g_lag_in_frames= FFMIN(avctx->rc_lookahead, 25); //0-25, avoids init failure
+ if(avctx->rc_lookahead >= 0)
+ enccfg.g_lag_in_frames= FFMIN(avctx->rc_lookahead, 25); //0-25, avoids init failure
if (ctx->lag_in_frames >= 0)
enccfg.g_lag_in_frames = ctx->lag_in_frames;
#else