Когда я бегу:
speaker-test -c6
...Все отлично. Я получаю 5.1 воспроизведения.
Тем не менее, когда я бегу:
mplayer -channels 6 "some video with 5.1 audio"
нет звука играет. Вот что появляется в терминале:
~$ mplayer /var/remote/projects/playback/video/calibration/5.1video/10000_bc-tlr2_h480p.mov MPlayer UNKNOWN-4.4.5 (C) 2000-2012 MPlayer Team Playing /var/remote/projects/playback/video/calibration/5.1video/10000_bc-tlr2_h480p.mov. libavformat version 53.31.100 (internal) libavformat file format detected. [lavf] stream 0: video (h264), -vid 0 [lavf] stream 1: audio (aac), -aid 0, -alang eng VIDEO: [H264] 848x352 24bpp 23.976 fps 2132.4 kbps (260.3 kbyte/s) Clip info: major_brand: qt minor_version: 537199360 compatible_brands: qt creation_time: 2008-01-08 00:00:27 comment: Encoded and delivered by apple.com/trailers/ comment-eng: Encoded and delivered by apple.com/trailers/ copyright: © 2008 Warner Bros. Pictures. All Rights Reserved copyright-eng: © 2008 Warner Bros. Pictures. All Rights Reserved title: 10,000 BC title-eng: 10,000 BC Load subtitles in /var/remote/projects/playback/video/calibration/5.1video/ ========================================================================== Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family libavcodec version 53.60.100 (internal) Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264) ========================================================================== Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders AUDIO: 48000 Hz, 6 ch, s16le, 465.9 kbit/10.11% (ratio: 58238->576000) Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio)) ========================================================================== [AO OSS] audio_setup: Can't open audio device /dev/dsp: No such file or directory [AO_ALSA] alsa-lib: pcm.c:2209:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround51 [AO_ALSA] Playback open error: No such file or directory AO: [pulse] 48000Hz 6ch s16le (2 bytes per sample) Starting playback... Unsupported PixelFormat 61 Unsupported PixelFormat 53 Unsupported PixelFormat 81 Movie-Aspect is undefined - no prescaling applied. VO: [xv] 848x352 => 848x352 Planar YV12 A: 0.1 V: 0.0 A-V: 0.084 ct: 0.004 0/ 0 ??% ??% ??,?% 0 0 [h264 @ 0xf0c760]Increasing reorder buffer to 1 A: 75.9 V: 75.9 A-V: 0.000 ct: 0.084 0/ 0 4% 0% 0.5% 0 0 Truncating packet of size 1173 to 500 [mov,mp4,m4a,3gp,3g2,mj2 @ 0xe953e0]stream 1, offset 0x13dc10b: partial file A: 76.3 V: 75.9 A-V: 0.395 ct: 0.084 0/ 0 4% 0% 0.5% 5034 0 [aac @ 0xf0c760]Input buffer exhausted before END element found A: 76.3 V: 75.9 A-V: 0.396 ct: 0.084 0/ 0 4% 0% 0.5% 5035 0 [mov,mp4,m4a,3gp,3g2,mj2 @ 0xe953e0]stream 1, offset 0x13dc5ab: partial file A: 76.3 V: 75.9 A-V: 0.396 ct: 0.089 0/ 0 4% 0% 0.5% 5035 0 Exiting... (End of file)
Наиболее показательным является линия:
[AO_ALSA] alsa-lib: pcm.c:2209:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround51
Кто-нибудь знает способ просто заставить mplayer использовать тот же путь вывода, который используется утилитой alsa's speaker-test?
Другой совет?
Для справки:
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: DSP [Hammerfall DSP], device 0: RME Hammerfall DSP + Multiface [RME Hammerfall DSP + Multiface]
Subdevices: 1/1
Subdevice #0: subdevice #0