avfilter/af_astats: also measure maximal difference between two consecutive samples

While here also mention bit depth in documentation.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/doc/filters.texi b/doc/filters.texi
index 2679090067..3b4ec2cc96 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -952,23 +952,27 @@ Available keys for each channel are:
 DC_offset
 Min_level
 Max_level
+Max_difference
 Peak_level
 RMS_peak
 RMS_trough
 Crest_factor
 Flat_factor
 Peak_count
+Bit_depth
 
 and for Overall:
 DC_offset
 Min_level
 Max_level
+Max_difference
 Peak_level
 RMS_level
 RMS_peak
 RMS_trough
 Flat_factor
 Peak_count
+Bit_depth
 Number_of_samples
 
 For example full key look like this @code{lavfi.astats.1.DC_offset} or
@@ -976,6 +980,9 @@ this @code{lavfi.astats.Overall.Peak_count}.
 
 For description what each key means read bellow.
 
+@item reset
+Set number of frame after which stats are going to be recalculated.
+Default is disabled.
 @end table
 
 A description of each shown parameter follows:
@@ -990,6 +997,9 @@ Minimal sample level.
 @item Max level
 Maximal sample level.
 
+@item Max difference
+Maximal difference between two consecutive samples.
+
 @item Peak level dB
 @item RMS level dB
 Standard peak and RMS level measured in dBFS.
@@ -1008,6 +1018,9 @@ Flatness (i.e. consecutive samples with the same value) of the signal at its pea
 @item Peak count
 Number of occasions (not the number of samples) that the signal attained either
 @var{Min level} or @var{Max level}.
+
+@item Bit depth
+Overall bit depth of audio. Number of bits used for each sample.
 @end table
 
 @section astreamsync