[FFmpeg-trac] #9437(avcodec:new): bursts of noise in alac output

[FFmpeg]

#9437: bursts of noise in alac output
---------------------------------------+-----------------------------------
             Reporter:  Nat Goodspeed  |                    Owner:  (none)
                 Type:  defect         |                   Status:  new
             Priority:  normal         |                Component:  avcodec
              Version:  4.3.2          |               Resolution:
             Keywords:  noise output   |               Blocked By:
             Blocking:                 |  Reproduced by developer:  0
Analyzed by developer:  0              |
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Comment (by Nat Goodspeed):

 Replying to [comment:5 Elon Musk]:

 > Actually i misread your report. I thought you talk about small burst at
 beginning and not about constant burst of noise. Anyway I can not
 reproduce your issue at all.
 >
 > Looks like flawed ffmpeg build to me. Try another one.

 This one is from ffmpeg 4.3.1 on Ubuntu, installed via the Ubuntu Software
 app:
 https://drive.google.com/file/d/1DPyUAfaGDV2mjI93tTZwnrnEBj5GQXHw/view?usp=sharing

 {{{
 ffmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
   built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
   configuration: --prefix= --prefix=/usr --disable-debug --disable-doc
 --disable-static --enable-cuda --enable-cuda-sdk --enable-cuvid --enable-
 libdrm --enable-ffplay --enable-gnutls --enable-gpl --enable-libass
 --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype --enable-
 libmp3lame --enable-libnpp --enable-libopencore_amrnb --enable-
 libopencore_amrwb --enable-libopus --enable-libpulse --enable-sdl2
 --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libv4l2
 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265
 --enable-libxcb --enable-libxvid --enable-nonfree --enable-nvenc --enable-
 omx --enable-openal --enable-opencl --enable-runtime-cpudetect --enable-
 shared --enable-vaapi --enable-vdpau --enable-version3 --enable-xlib
   libavutil      56. 51.100 / 56. 51.100
   libavcodec     58. 91.100 / 58. 91.100
   libavformat    58. 45.100 / 58. 45.100
   libavdevice    58. 10.100 / 58. 10.100
   libavfilter     7. 85.100 /  7. 85.100
   libswscale      5.  7.100 /  5.  7.100
   libswresample   3.  7.100 /  3.  7.100
   libpostproc    55.  7.100 / 55.  7.100
 }}}

 As you can hear, this suffers from bursts of static too. I haven't done a
 head-to-head to determine whether the static bursts appear in exactly the
 same places, but that seems likely.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9437#comment:6>
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