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Configuring Digital Sound with AC3 and SPDIF - MythTV ...
https://www.mythtv.org/wiki/Configuring_Digital_Sound_with_AC3_and_SPDIF
Configure MythTV for Digital Sound. This part is the easy part. Fire up mythfrontend and navigate to: Utilities/Setup->Setup->General On Page 3, change the default audio device to "ALSA:default" and change the passthrough device to "ALSA:default". Check the box next to "AC3 to SPDIF passthrough".
man dsp (1): Open Sound System audio devices
o /dev/dsp Default audio device o /dev/dsp_mmap Default audio device for applications using mmap(2) o /dev/dsp_ac3 Default audio device for applications sending Dolby Digital (AC3) audio to an external receiver. o /dev/dsp_multich Default multichannel (4.0-7.1) audio output device o /dev/dsp_spdifout Default digital audio (S/PDIF) output device o /dev/oss/<driver>/pcmN
MPlayer crash when using hwac3 / Multimedia and Games ...
https://bbs.archlinux.org/viewtopic.php?id=80322
[AO OSS] Can't set audio device /dev/dsp to ac3 output, trying s16le... AO: [oss] 48000Hz 2ch s16le (2 bytes per sample) [format] Sample format big-endian AC3 not yet supported Couldn't find matching filter/ao format! it's weird that it was working for you before. have you tried removing/reinstalling OSS, or building oss-mercurial from aur?
Ubuntu Manpage: dsp - Open Sound System audio devices
https://manpages.ubuntu.com/manpages/bionic/man7/dsp.7.html
The system administrator can set /dev/dsp to be a symbolic link to the desired default device. The ossinfo utility can be used to list the available audio devices in the system. /dev/dsp_mmap, /dev/dsp_ac3, /dev/dsp_multich and /dev/dsp_spdifout are default audio devices for specific applications such as games or media (DVD) players.
mplayer: Couldn't find matching filter/ao format!
https://www.linuxquestions.org/questions/linux-software-2/mplayer-couldn%27t-find-matching-filter-ao-format-342556/
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) ... 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 ...
Unable to play AC3 audio in VLC and MPlayer2 | The FreeBSD ...
https://forums.freebsd.org/threads/unable-to-play-ac3-audio-in-vlc-and-mplayer2.40655/
[B]Requested audio codec family [a52] (afm=liba52) not available. Enable it at compilation.[/B] hwac3: switched to AC3, 448000 bps, 48000 Hz Selected audio codec: AC3 through S/PDIF [hwac3] AUDIO: 48000 Hz, 2 ch, ac3be, 448.0 kbit/29.17% (ratio: 56000->192000) [AO OSS] Can't set audio device /dev/dsp to ac3le output, trying s16le...
[AO OSS] audio_setup: Can't open audio device /dev/dsp: No ...
https://forums.centos.org/viewtopic.php?t=65634
The video is working but no audio output, saying Can't open audio device /dev/dsp, what is the sound driver in CentOS7? Detailed output is given below: Code: Select all. libavformat version 57.25.100 (internal) libavformat file format detected. [mov,mp4,m4a,3gp,3g2,mj2 @ 0x5610526ddf40]Protocol name not provided, cannot determine if input is ...
ALSA: No /dev/dsp and /dev/sound/ [SOLVED] / Multimedia ...
https://bbs.archlinux.org/viewtopic.php?id=99234
snd_pcm_oss provides the /dev/dsp and /dev/sound/dsp stuff. Blacklisting those modules does indeed remove the devices. alsa-oss is simply a program that hooks calls to e.g. /dev/dsp and emulates the OSS api using alsa. In that case you do not need /dev/dsp, etc.
[Solved] How to stop a video playing using mplayer …
https://www.codeproject.com/Questions/4530684/How-to-stop-a-video-playing-using-mplayer-command
[AO OSS] Can't set audio device /dev/dsp to s16le output, trying s16le... MPlayer interrupted by signal 2 in module: ao2_init Can't restore text mode: Invalid argument. phil.o 22-May-19 9:09am I'm afraid I have not a clue. You may have to go to mplayer community for that, because this is not really related to software development.
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