mplayer: Couldn't find matching filter/ao format!

laurentwahl · 07-12-2005, 03:33 PM

Hello
I have installed Mplayer and the Programm works with avi files and with most of dvd's.

But with some dvd's, I only hear a grating noise. He writes:

Quote:

Checking audio filter chain for 48000Hz/2ch/ac3 -> 48000Hz/2ch/ac3...
AF_pre: 48000Hz/2ch/ac3
[AO OSS] Can't set audio device /dev/dsp to ac3 output, trying s16le...
AO: [oss] 48000Hz 2ch s16le (2 bps)
Building audio filter chain for 48000Hz/2ch/ac3 -> 48000Hz/2ch/s16le...
[format] Sample format big-endian AC3 not yet supported
[libaf] Reinitialization did not work, audio filter 'format' returned error code -2
Couldn't find matching filter/ao format!
Starting playback...
VDec: vo config request - 720 x 480 (preferred csp: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
VO: [xv] 720x480 => 854x480 Planar YV12
A: 0.7 V: 0.7 A-V: 0.003 ct: 0.031 16/ 13 ??% ??% ??,?% 1 0
demux_mpg: 24000/1001fps progressive NTSC content detected, switching framerate.No bind found for key MOUSE_BTN0

I can see the pictures, but the sound doesn't work. Can anybody help me?

acid_kewpie · 07-12-2005, 03:48 PM

ac3 format shouldn't be a problem with a default mplayer RPM... don't think there are any copyright issues there... one thing is to use alsa output, not oss (-ao alsa) and see if that improves it, other than that i'd suggest a REAL source compile so you know that it's not down to fedora taking out the useful bits and replacing them with twigs and gum.

laurentwahl · 07-12-2005, 04:05 PM

if I use the alsa driver with
mplayer -ao alsa dvd://
he says

Quote:

Checking audio filter chain for 48000Hz/2ch/ac3 -> 48000Hz/2ch/ac3...
AF_pre: 48000Hz/2ch/ac3
alsa-init: 1 soundcard found, using: iec958:{CARD 0 AES0 0x02 AES1 0x82 AES2 0x00 AES3 0x02}
ALSA lib setup.c:547

add_elem) Cannot obtain info for CTL elem (MIXER,'IEC958 Playback Default',0,0,0): No such file or directory
alsa-init: playback open error: No such file or directory
Could not open/initialize audio device -> no sound.
Audio: no sound
Starting playback...
VDec: vo config request - 720 x 480 (preferred csp: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
VO: [xv] 720x480 => 854x480 Planar YV12
V: 0.7 16/ 13 ??% ??% ??,?% 0 0
demux_mpg: 24000/1001fps progressive NTSC content detected, switching framerate.

Then I didn't hear anything.