Author: cigaes Date: Wed Mar 7 10:20:08 2012 New Revision: 34801 Log: af_stats: document the meaning of the output.
Modified: trunk/DOCS/man/en/mplayer.1 Modified: trunk/DOCS/man/en/mplayer.1 ============================================================================== --- trunk/DOCS/man/en/mplayer.1 Mon Mar 5 19:14:38 2012 (r34800) +++ trunk/DOCS/man/en/mplayer.1 Wed Mar 7 10:20:08 2012 (r34801) @@ -6105,7 +6105,17 @@ Changing playback speed, would change pi Collects and prints statistics about the audio stream, especially the volume. These statistics are especially intended to help adjusting the volume while avoiding clipping. -The volumes are printed in dB and compatible with the volume audio filter. +The volumes are printed in dB and compatible with the volume audio filter, +they are always rounded towards -0dB. +.sp 1 +The 'n_samples' field is the total number of samples seen by the filter. +The 'mean_volume' field is the root mean square. +The 'max_volume' field is exactly what it says. +The 'histogram_Xdb fields count how many samples were at -XdB, for X just +below max_volume. +.sp 1 +For example, if max_volume is -7dB and histogram_7dB is 19, 'volume=7' will +not cause clipping and 'volume=8' will cause clipping on exactly 19 samples. . . . _______________________________________________ MPlayer-DOCS mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/mplayer-docs
