sound doesn't work until I login

[Ralf Mardorf]

On Sat, 10 Sep 2016 04:05:35 +1000, Karl Auer wrote:
>...doesn't play anything on the Pi. Nothing at all. Not static,
>nothing. And it seems to exit immediately, regardless of how big the
>input file is. But it *does* play back on my Ubuntu laptop.

I don't know the reason for this...

  https://www.google.de/?gws_rd=ssl#q=pipe+ffmpeg+pipe+avconv

  https://ubuntuforums.org/showthread.php?t=2208592

  http://superuser.com/questions/322216/how-can-i-pipe-output-of-ffmpeg-to-ffplay

...perhaps an avconv vs ffmpeg issue?

[root at moonstudio ~]# cd /usr/bin/
[root at moonstudio bin]# ls -Ggh avconv avplay avprobe ffmpeg ffplay ffprobe 
ls: cannot access 'avconv': No such file or directory
ls: cannot access 'avplay': No such file or directory
ls: cannot access 'avprobe': No such file or directory
-rwxr-xr-x 1 231K Mar 14 20:32 ffmpeg
-rwxr-xr-x 1 127K Mar 14 20:32 ffplay
-rwxr-xr-x 1 142K Mar 14 20:32 ffprobe
[root at moonstudio bin]# echo $(lsb_release -rc)
Release: 16.04 Codename: xenial
[root at moonstudio bin]# apt -qq update && apt -o APT::Keep-Downloaded-Packages=1 install libav-tools            
[snip]
[root at moonstudio bin]# ls -Ggh avconv avplay avprobe ffmpeg ffplay ffprobe 
lrwxrwxrwx 1    6 Mar 14 20:32 avconv -> ffmpeg
lrwxrwxrwx 1    6 Mar 14 20:32 avplay -> ffplay
lrwxrwxrwx 1    7 Mar 14 20:32 avprobe -> ffprobe
-rwxr-xr-x 1 231K Mar 14 20:32 ffmpeg
-rwxr-xr-x 1 127K Mar 14 20:32 ffplay
-rwxr-xr-x 1 142K Mar 14 20:32 ffprobe

Regards,
Ralf