[Gnash-commit] [bug #45887] `gnash --audio-dump` produces corrupted WAV file

[Nutchanon Wetchasit]

URL:
  <http://savannah.gnu.org/bugs/?45887>

                 Summary: `gnash --audio-dump` produces corrupted WAV file
                 Project: Gnash - The GNU Flash player
            Submitted by: nachanon
            Submitted on: Sun 06 Sep 2015 04:37:00 PM ICT
                Category: None
                Severity: 3 - Normal
                 Release: master
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

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Details:

This is a spin-off from bug #45722 (screeching PCM sound).

When I was trying to capture audio dumps from bug #45722's test files using
`gnash --audio-dump` option, I found that the audio dumping process
worked reasonably and resulting WAV file is playable with MPlayer
<http://www.mplayerhq.hu/>
and VLC <http://www.videolan.org/vlc/>.

But when I tried to load the WAV file into Audacity
<http://web.audacityteam.org/> to check the waveform,
*it shown up as an empty (0 sec) file*, same goes with SoX
<http://sox.sourceforge.net/>
and Windows Sound Recorder 5.1. Other programs (e.g. Nero WaveEditor 3.5)
also complained that the file is corrupted and refused to open it.


I have created a simple Flash file (using MTASC, SWFmill and LAME) that
tries to play a simple 6-sec 44100 Hz Mono MP3 sound of Westminster chimes.
Then dumped the audio output using `gnash -1 -r 2 --audio-dump` to
demonstrate
the issue.

Test Flash file, code, sound and build script are attached as `chime.zip`.
Resulting WAV file is attached as `chime_gnash0.8.11dev-dc51f53.wav.gz`.
Log output (verbosity 2 + action error log) is attached as
`chime_gnash0.8.11dev-dc51f53.log`.


Gnash: 0.8.11dev (git dc51f53 28-Aug-2015, FFmpeg/libAV media backend)
SDL: libsdl1.2debian 1.2.15-5 (debian)
libAV: libavcodec53 6:0.8.17-1 (debian), libavformat53 6:0.8.17-1 (debian),
libavutil51 6:0.8.17-1 (debian)
CSound: libcsound64-5.2 1:5.17.11~dfsg-3 (debian)
System: Debian GNU/Linux 7.0 Wheezy i386



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File Attachments:


-------------------------------------------------------
Date: Sun 06 Sep 2015 04:37:00 PM ICT  Name: chime.zip  Size: 393kB   By:
nachanon
Test Flash file, source code, sound and build script
<http://savannah.gnu.org/bugs/download.php?file_id=34818>

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