[MPlayer-users] Standalone AAC file decoding not supported

[Jan Engelhardt]

Hi,


MPlayer does not seem to currently support playing back streamdumps of 
HQ Youtube videos that have an AAC audio stream. Is this known not to 
work, or any work in progress to get it fixed?


$ wget 
'http://www.youtube.com/get_video?video_id=hKoB0MHVBvM&t=OEgsToPDskJn59G6lF0zOYE2drfnwOXj&el=detailpage&ps=&fmt=18' 
-O mentos.flv

$ mplayer mentos.flv
...
Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
FAAD: compressed input bitrate missing, assuming 128kbit/s!
AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio) 
decoder)
...

$ mplayer -dumpaudio mentos.flv
...
Core dumped ;)

$ mplayer stream.dump
MPlayer dev-SVN-r27637-4.3-openSUSE Linux 11.0 (i686)-Packman (C) 
2000-2008 MPlayer Team
CPU: AMD Athlon(tm) XP 2000+ (Family: 6, Model: 8, Stepping: 0)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled with runtime CPU detection.
Can't open joystick device /dev/input/js0: No such file or directory
Can't init input joystick
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote 
control.

Playing stream.dump.
MPEG-PES file format detected.
MPEG: No audio stream found -> no sound.
MPEG: FATAL: EOF while searching for sequence header.
Video: Cannot read properties.
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
ADecoder init failed :(
ADecoder init failed :(
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
Unknown/missing audio format -> no sound
ADecoder init failed :(
Requested audio codec family [mad] (afm=libmad) not available.
Enable it at compilation.
Opening audio decoder: [hwmpa] MPEG audio pass-through (fake decoder)
Cannot sync MPA frame: 0
ADecoder init failed :(
ADecoder init failed :(
Cannot find codec for audio format 0x50.
Read DOCS/HTML/en/codecs.html!
Audio: no sound
Video: no video
Exiting... (End of file)



Sometimes (i.e. other videos), LAVC also takes control of the file:


Playing stream.dump.
libavformat file format detected.
LAVF_header: av_open_input_stream() failed
Exiting... (End of file)