Opened 8 years ago

Last modified 8 years ago

#2011 new defect

lavcac3enc: Error at audio filter chain pre-init!

Reported by: thomas.pasch@… Owned by: reimar
Priority: normal Component: af
Version: unspecified Severity: normal
Keywords: Cc:
Blocked By: Blocking:
Reproduced by developer: Analyzed by developer:

Description

Hello,

I'm trying the following:

$ mplayer -channels 6 -ao alsa:device=iec958 -af lavcac3enc -vo null 2L38SACD_tr1_mch_96kHz.flac

MPlayer2 UNKNOWN (C) 2000-2011 MPlayer Team
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 2L38SACD_tr1_mch_96kHz.flac.
Detected file format: raw FLAC (libavformat)
[flac @ 0x8826bc0]max_analyze_duration reached
[lavf] stream 0: audio (flac), -aid 0
Clip info:

ALBUM: MOZART Violin Concertos
ARTIST: Maianne Thorsen / TrondheimSolistene?
COMMENT: Lindberg Lyd (2L38SACD) Recorded in DXD.
COMPOSER: WOLFGANG AMADEUS MOZART 1756–1791
DATE: 21. desember 2007
disc: 1
GENRE: Classical
PERFORMER: Maianne Thorsen / TrondheimSolistene?
TITLE: Allegro from no. 4 in D major KV 218
TOTALDISCS: 1
TOTALTRACKS: 9
track: 1
WAVEFORMATEXTENSIBLE_CHANNEL_MASK: 0x003F

Load subtitles in .
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 96000 Hz, 6 ch, s32le, 0.0 kbit/0.00% (ratio: 0->2304000)
Selected audio codec: [ffflac] afm: ffmpeg (FFmpeg FLAC audio)
==========================================================================
[ac3 @ 0x14ea300]channel_layout not specified
[ac3 @ 0x14ea300]No channel layout specified. The encoder will guess the layout, but it might be incorrect.
[libaf] Unable to correct audio format. This error should never uccur, please send bugreport.
Error at audio filter chain pre-init!

Exiting... (Fatal error)

Also tried mplayer1. Same problem.

Change History (1)

comment:1 Changed 8 years ago by reimar

AC3 does not support 96 kHz and MPlayer cannot automatically convert at that point.
You have to use e.g. -af lavcresample=48000,lavcac3enc
And there is no "mplayer1", there is only MPlayer and a separate fork that decided to call itself "mplayer2".

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