[FFmpeg-devel] AAC: audible artifact: (sample to FFmpeg developers)

[Dâniel Fraga]

	I sent a small sample of a video using AAC audio with a audible artifact at the very beggining. It's
on incoming directory of upload.mplayerhq.hu: 

garbage-aac-audible-artifact.mkv

***

MPlayer SVN-r31027-4.4.3 (C) 2000-2010 MPlayer Team
150 audio & 337 video codecs

Playing garbage-aac-audible-artifact.mkv.
[mkv] Track ID 1: video (V_MPEG4/ISO/AVC), -vid 0
[mkv] Track ID 2: audio (A_AAC), -aid 0, -alang und
[mkv] Will play video track 1.
Matroska file format detected.
VIDEO:  [avc1]  1280x720  24bpp  30.001 fps    0.0 kbps ( 0.0 kbyte/s)
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
==========================================================================
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
[aac @ 0xd3b700]Transition from an ONLY_LONG or LONG_STOP to an EIGHT_SHORT sequence detected. If you heard an audible artifact, please submit the sample to the FFmpeg developers.
[aac @ 0xd3b700]Transition from an ONLY_LONG or LONG_STOP to an EIGHT_SHORT sequence detected. If you heard an audible artifact, please submit the sample to the FFmpeg developers.
AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio))
==========================================================================
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
VO: [vdpau] 1280x720 => 1280x720 Planar YV12 
A:   1.0 V:   1.0 A-V: -0.003 ct: -0.032   0/  0 32%  4%  0.5% 0 0 

Exiting... (End of file)

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