AUDIO_DIFF_AVG_NB 2310 fftools/ffplay.c             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
AUDIO_DIFF_AVG_NB 2679 fftools/ffplay.c         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);