Opened 4 years ago

Closed 4 years ago

#1401 closed defect (invalid)

ffplay: Muted when going to foreign tty but continues playing when coming back.

Reported by: u ltd. Owned by:
Priority: minor Component: ffplay
Version: 0.11 Keywords: tty pulseaudio
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

How to reproduce
Invoke ffplay from somewhere (console with exported DISPLAY=:0 or from KDE4)

% ffplay file.mp3
% ffplay http://url.com/file.mp3
% ffplay -nodisp file.mp3
% ffplay -nodisp http://url.com/file.mp3

Then switch to another tty via Ctrl-Alt-F1 / Ctrl-Alt-F7 / Ctrl-Alt-F10 etc.
Whenever I go to a tty with me logged in, the play continues. Going to ttys with nobody logged in or another user (root) the sound stops and, if invoked with window, it looks as if one little phrase would be repeated many times.

In the 1st image you see: normal operation
In the 2nd image you see:

  1. Start of ffplay on tty7, hearing sound
  2. Going to a tty which wasn't logged in and hearing nothing
  3. going back to tty7 and hearing sound again and then taking a screen shot.

(The window decoration looks normal on my screen, but the 'import' command seems to mangle the ffplay window decoration.)

Additional information

% ffplay -version
ffplay version N-40844-g0e82d31
built on May 19 2012 15:26:37 with gcc 4.6.2
configuration: --prefix=/usr --mandir=/usr/share/man --libdir=/usr/lib64 --shlibdir=/usr/lib64 --disable-stripping --enable-pthreads --disable-shared --enable-avfilter --enable-static --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-libx264 --enable-nonfree --enable-postproc --enable-shared --enable-libdc1394 --enable-libtheora --enable-libschroedinger --enable-libvpx --enable-gpl --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-version3 --enable-x11grab --enable-ffplay
libavutil      51. 53.100 / 51. 53.100
libavcodec     54. 21.101 / 54. 21.101
libavformat    54.  5.100 / 54.  5.100
libavdevice    53.  4.100 / 53.  4.100
libavfilter     2. 74.102 /  2. 74.102
libswscale      2.  1.100 /  2.  1.100
libswresample   0. 12.100 /  0. 12.100
libpostproc    52.  0.100 / 52.  0.100

Another version (same bug):

% ffplay -version
ffplay version 0.11
built on Jun  3 2012 15:12:12 with gcc 4.6.2
configuration: --prefix=/usr --mandir=/usr/share/man --libdir=/usr/lib64 --shlibdir=/usr/lib64 --disable-stripping --enable-pthreads --disable-shared --enable-avfilter --enable-static --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-libx264 --enable-nonfree --enable-postproc --enable-shared --enable-libdc1394 --enable-libtheora --enable-libschroedinger --enable-libvpx --enable-gpl --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-version3 --enable-x11grab --enable-ffplay --disable-outdev=sdl
libavutil      51. 54.100 / 51. 53.100
libavcodec     54. 23.100 / 54. 21.101
libavformat    54.  6.100 / 54.  5.100
libavdevice    54.  0.100 / 53.  4.100
libavfilter     2. 77.100 /  2. 74.102
libswscale      2.  1.100 /  2.  1.100
libswresample   0. 15.100 /  0. 12.100
libpostproc    52.  0.100 / 52.  0.100

Another related error (reproducible)
When I made the screen shot, I had another ffplay running on tty2 on a http mp3 stream. after quitting the windowed ffplay and waiting some time and then randomly switching between "mute" ttys and "playing" ttys and going back to tty7 (window manager), I had about 2 seconds of sound an then the tty2 ffplay was mute too (but still counted seconds!)

Attachments (2)

screen.png (429.0 KB) - added by u ltd. 4 years ago.
1st image: normal operation
screen2.png (404.2 KB) - added by u ltd. 4 years ago.
2nd image: description see ticket

Download all attachments as: .zip

Change History (9)

Changed 4 years ago by u ltd.

1st image: normal operation

Changed 4 years ago by u ltd.

2nd image: description see ticket

comment:1 Changed 4 years ago by u ltd.

Comment 1: related to #1402

Comment 2: My system: OpenSUSE 12.1; Kernel 3.1.10-1.9-desktop

comment:2 Changed 4 years ago by cehoyos

  • Keywords mute display removed

Not reproducible here (ffplay continues to play no matter if the tty has no user or if root is logged in) on Opensuse 10.3.

comment:3 Changed 4 years ago by cus

Maybe an audio driver issue, or some magical intelligence (the user whose tty is active owns the sound)

Can you try it with different SDL_AUDIODRIVER combinations? (alsa, pulse, dsp, dma)

Can you try if other players using similar audio drivers behave the same way? (VLC, mplayer)

Can you try it with uninstalled, or disabled pulseaudio?

comment:4 Changed 4 years ago by u ltd.

I made some testing, here are the results:

Chosing SDL driver

  • SDL_AUDIODRIVER ist defaulted to "pulse"; foreign ttys don't work
  • With SDL_AUDIODRIVER="alsa" foreign work either because the default alsa device is the pulseaudio server
  • dsp, dma don't give me any sound

(See attached log file which was taken without .asoundrc)

Other players

  • vlc had the same problem, but I was able to chose my hardware directly in vlc settings. Then it worked on all consoles.

Disabling pulseaudio

  • With an own .asoundrc redirecting the sound to the hardware directly all works fine

About this ticket
Does that mean that this isn't a bug of ffmpeg? Shall I submit a pulseaudio bug?
Or is this a feature of pulseaudio?

Log file

me@machine:~/Dokumente> ffplay -nodisp http://url.com/stream.mp3
ffplay version 0.11 Copyright (c) 2003-2012 the FFmpeg developers
 ... 
[mp3 @ 0x7f0764000de0] Header missing
    Last message repeated 1 times
[mp3 @ 0x7f07640008c0] max_analyze_duration 5000000 reached at 5015510
[mp3 @ 0x7f07640008c0] Estimating duration from bitrate, this may be inaccurate
Input #0, mp3, from 'http://url.com/stream.mp3':
  Duration: N/A, start: 0.000000, bitrate: 128 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16, 128 kb/s
[mp3 @ 0x7f0764000de0] Header missing
^C 123  (ffplay -nodisp http://url.com/stream.mp3)
me@machine:~/Dokumente> echo $SDL_AUDIODRIVER
pulse
   0  (echo $SDL_AUDIODRIVER)
me@machine:~/Dokumente> export SDL_AUDIODRIVER=alsa
   0  (export SDL_AUDIODRIVER=alsa)
me@machine:~/Dokumente> ffplay -nodisp http://url.com/stream.mp3
ffplay version 0.11 Copyright (c) 2003-2012 the FFmpeg developers
 ... 
[mp3 @ 0x7f7788003740] Header missing
[mp3 @ 0x7f7788003020] max_analyze_duration 5000000 reached at 5015510
[mp3 @ 0x7f7788003020] Estimating duration from bitrate, this may be inaccurate
Input #0, mp3, from 'http://url.com/stream.mp3':
  Duration: N/A, start: 0.000000, bitrate: 128 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16, 128 kb/s
[mp3 @ 0x7f7788003740] Header missing
^C 123  (ffplay -nodisp http://url.com/stream.mp3)
me@machine:~/Dokumente> export SDL_AUDIODRIVER=dsp
   0  (export SDL_AUDIODRIVER=dsp)
me@machine:~/Dokumente> ffplay -nodisp http://url.com/stream.mp3
ffplay version 0.11 Copyright (c) 2003-2012 the FFmpeg developers
 ... 
[mp3 @ 0x7f7f380088a0] Header missing
[mp3 @ 0x7f7f380008c0] max_analyze_duration 5000000 reached at 5015510
[mp3 @ 0x7f7f380008c0] Estimating duration from bitrate, this may be inaccurate
Input #0, mp3, from 'http://url.com/stream.mp3':
  Duration: N/A, start: 0.000000, bitrate: 128 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16, 128 kb/s
SDL_OpenAudio: 
http://url.com/stream.mp3: could not open codecs
^C 123  (ffplay -nodisp http://url.com/stream.mp3)
me@machine:~/Dokumente> export SDL_AUDIODRIVER=dma
   0  (export SDL_AUDIODRIVER=dma)
me@machine:~/Dokumente> ffplay -nodisp http://url.com/stream.mp3
ffplay version 0.11 Copyright (c) 2003-2012 the FFmpeg developers
 ... 
[mp3 @ 0x7f7d880088a0] Header missing
[mp3 @ 0x7f7d880008c0] max_analyze_duration 5000000 reached at 5015510
[mp3 @ 0x7f7d880008c0] Estimating duration from bitrate, this may be inaccurate
Input #0, mp3, from 'http://url.com/stream.mp3':
  Duration: N/A, start: 0.000000, bitrate: 128 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16, 128 kb/s
SDL_OpenAudio: 
http://url.com/stream.mp3: could not open codecs
^C 123  (ffplay -nodisp http://url.com/stream.mp3)
me@machine:~/Dokumente> 

comment:5 Changed 4 years ago by cus

Its definitely a feature of pulseaudio then.

I did some googling and there are several complaints about this:

http://www.redhat.com/archives/rhl-devel-list/2008-September/msg01607.html
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/213149

Since this bug is a driver issue and there is nothing we can do about it I will close this as invalid if it's OK with you.

comment:6 Changed 4 years ago by u ltd.

OK close it.

Thanks for additional explanation!

comment:7 Changed 4 years ago by cehoyos

  • Keywords pulseaudio added
  • Resolution set to invalid
  • Status changed from new to closed
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