I installed and did a test.
Now audio is good.
cehoyos answer is:
Quote:

Then please use git bisect to find the change introducing the problem.

git bisect sometimes doesn't work well with FFmpeg, I will help you if necessary.
...

Keywords regression added
Priority changed from normal to important
Version changed from unspecified to git-master

We did a good step

LE:
Just wandering if he is not the best guy to find the change introducing the problem?

Changed 10 hours ago by cehoyos

The following configure line should significantly speed up build time and make the bisecting easier (this time tested):
./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

Some versions will not link with above configure line, you will have to use ./configure && make ffmpeg for them.

Quote:

Changed 10 hours ago by cehoyos

The following configure line should significantly speed up build time and make the bisecting easier (this time tested):
./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

Some versions will not link with above configure line, you will have to use ./configure && make ffmpeg for them.

Is that helpful?
If not what I have to ask him?

--enable-protocol=file

Changed 20 minutes ago by cehoyos

I don't think this is something your packager can do for you (except if he also does the tests), and I don't understand the questions. (Did you tell him this is for a git bisect?)
You don't have to use the configure line I provided - the tests can also be done with ./configure && make - I only provided it to allow you to speed the bisect (significantly) up.

Changed 10 hours ago by MrNice

Mainly, I am only a user, even I have networking and database skills, this is useless in this case.
I use Stella (remix of Centos) and I never did a build/compile.

The guy in charge of build/package has lot a experience and is very quick in his answers, but he can't do the tests.
I copy/past the posts you wrote, so he knows this is for git bisect.

Now you told that the same should do the tests and the build/compile. I am ready to try but I need a step by step process and I don't want to crash my install.
I'll forward you answer to him.

comment:31 Changed 2 hours ago by cehoyos

The following assumes you have a toolchain installed (gcc and make) and git, when I write mplayer out.wav you can use any program to test if out.wav plays fine or with distortions.
You should not be administrator and you should not install any of the binaries you build.
Instead of ./configure && make ffmpeg you can use above (long) configure line which speeds up compilation very significantly, but will sometimes fail linking, then just run ./configure && make ffmpeg
Instead of make ffmpeg, you can always use make -j16 ffmpeg depending on how many CPUs you have.
First checkout the FFmpeg sources:

$ git clone git://source.ffmpeg.org/ffmpeg.git ffmpeg

Change into the FFmpeg directory:

$ cd ffmpeg

Compile current FFmpeg to verify the problem:

$ ./configure && make ffmpeg

Record:

$ ffmpeg -f alsa -ac 2 -i hw:0,0 -y out.wav

Test for distortions:

$ mplayer out.wav

(You should hear distortions)
Start the bisect:

$ make distclean && git bisect bad

(Say yes)
Checkout the presumably working version:

$ git checkout f2f35d3

Build:

$ ./configure && make ffmpeg

Record:

$ ffmpeg -f alsa -ac 2 -i hw:0,0 -y out.wav

Test for distortions:

$ mplayer out.wav

(Should sound fine)
Tell git that it works:

$ make distclean && git bisect good

Now you start with the recursive process:

$ ./configure && make ffmpeg
$ ffmpeg -f alsa -ac 2 -i hw:0,0 -y out.wav
$ mplayer out.wav

If you hear distortions, you use:

$ make distclean && git bisect bad

If you did not hear distortions, tell git everything is fine:

$ make distclean && git bisect good

Unfortunately, git will sometimes try to let you test versions that do not contain FFmpeg, if git bisect skip does not help you, post here and I will support you.

Still working (hard) to fix the issue.

Is it possible to get an update to last release of the alsa driver?