[FFmpeg-trac] #2504(avdevice:new): Audio glitches and distortion when recording alsa

[FFmpeg]

#2504: Audio glitches and distortion when recording alsa
------------------------------------+------------------------------------
             Reporter:  MrNice      |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  important   |                Component:  avdevice
              Version:  git-master  |               Resolution:
             Keywords:  regression  |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+------------------------------------

Comment (by MrNice):

 I am running the bisec and did more than 100 loops.
 I use the scrip

 {{{
 #!/bin/bash

 let loopnb=100

 while true;
 do
 let loopnb+=1

 ./configure --disable-protocols --disable-decoders --disable-encoders
 --disable-demuxers --disable-muxers --disable-outdevs --disable-bsfs
 --disable-parsers --enable-protocol=file --enable-decoder=pcm_s16le
 --enable-encoder=pcm_s16le --enable-muxer=wav --disable-filters && make
 ffmpeg

 ./ffmpeg -f alsa -ac 2 -i hw:0,0 -y out.wav -t 0:0:10

 mplayer out.wav -loop 10

 echo "loops num:" $loopnb
 echo [g]ood or [b]ad sound? [e]xit [p]lay
 read KB

 case $KB in
 g)
         make distclean && git bisect good
         echo GOOD;;
 b)
         make distclean && git bisect bad
         echo BAD;;
 p)
         mplayer out.wav -loop 4
         echo;;
 e)
         exit;;
 esac

 done
 }}}
 I can count the loop number but I can't see the bisecting progress.
 1) Could you let me know what command I could add in the loop to check
 there is a change between every test.
 2) Do you know how many loops there are between f2f35d3 and 743b389. I
 started from f2f35d3 and I assume I'll reach 743b389, so I hope I am going
 in the good way.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2504#comment:95>
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