[FFmpeg-cvslog] doc/filters: add more advanced and useful afir example

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sun Dec 11 20:50:33 2022 +0100| [c3e20f78b05d78ed1d214ba40fa5133c16af6415] | committer: Paul B Mahol

doc/filters: add more advanced and useful afir example

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c3e20f78b05d78ed1d214ba40fa5133c16af6415
---

 doc/filters.texi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index 1cb7fd94a7..920695a65b 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -1703,6 +1703,13 @@ Apply reverb to stream using mono IR file as second input, complete command usin
 @example
 ffmpeg -i input.wav -i middle_tunnel_1way_mono.wav -lavfi afir output.wav
 @end example
+
+ at item
+Apply true stereo processing given input stereo stream, and two stereo impulse responses for left and right channel,
+the impulse response files are files with names l_ir.wav and r_ir.wav:
+ at example
+"pan=4C|c0=FL|c1=FL|c2=FR|c3=FR[a];amovie=l_ir.wav[LIR];amovie=r_ir.wav[RIR];[LIR][RIR]amerge[ir];[a][ir]afir=irfmt=input:gtype=gn:irgain=-5dB,pan=stereo|FL<c0+c2|FR<c1+c3"
+ at end example
 @end itemize
 
 @anchor{aformat}