mplayer SVN r28058 (1.0_rc2_p28058-r1) is the last known version which is fine and shows none of the below described effects. mplayer SVN r28288 (1.0_rc2_p28288) has shuttering audio when Alsa output with dmix is used. - So far it happens with all tested audio files (tested with .ogg and .mp3). - .avi file with mp3 audio codec was fine. Even playing the video with "-vo null" to mimic the audio only behaviour is also fine. - Only happens with dmix ("-ao alsa:device=dmixer"). A direct access with "-ao alsa:device=intel-hda" is ok. - "-ao sdl" or "-ao sdl:alsa" works good. Stuff like "-ao oss" is fine too. Audio Hardware: Card: HDA Intel, Chip: Analog Devices AD1984 ALSA (libs/utils): 1.0.17 .asoundrc: ------------------------------------ # Default Output pcm.!default { type plug slave.pcm "dmixer" } ctl.!default { type hw card 0 } # Intel HDA pcm.intel-hda { type softvol slave.pcm "hw:0,0" control.name "Master" control.card 0 } ctl.intel-hda { type hw card 0 } # OSS Emu pcm.dsp0 { type plug slave.pcm "dmixer" } ctl.mixer0 { type hw card 0 } # A bit more control over the mixer pcm.dmixer { type dmix ipc_key 6789 # Any unique number slave { pcm "hw:0,0" period_time 0 period_size 1024 buffer_size 4096 #periods 128 rate 48000 } bindings { 0 0 1 1 } } ctl.dmixer { type hw card 0 } ------------------------------------ emerge --info: ---------------------------------------------------------------------------- Portage 2.1.6.4 (default/linux/amd64/2008.0/desktop, gcc-4.1.2, glibc-2.6.1-r0, 2.6.26-gentoo-r1 x86_64) ================================================================= System uname: Linux-2.6.26-gentoo-r1-x86_64-Intel-R-_Core-TM-2_Duo_CPU_T7100_@_1.80GHz-with-glibc2.2.5 Timestamp of tree: Mon, 12 Jan 2009 17:15:03 +0000 distcc 3.0 x86_64-pc-linux-gnu [enabled] app-shells/bash: 3.2_p39 dev-java/java-config: 1.3.7-r1, 2.1.6-r1 dev-lang/python: 2.5.2-r7 dev-python/pycrypto: 2.0.1-r6 sys-apps/baselayout: 1.12.11.1 sys-apps/sandbox: 1.2.18.1-r2 sys-devel/autoconf: 2.13, 2.63 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.2 sys-devel/binutils: 2.18-r3 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 1.5.26 virtual/os-headers: 2.6.27-r2 ACCEPT_KEYWORDS="amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -march=nocona -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/audacious/images" CONFIG_PROTECT_MASK="/etc/bash_completion.d /etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/sound /etc/terminfo /etc/udev/rules.d" CXXFLAGS="-O2 -march=nocona -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="distcc distlocks fixpackages notitles parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch userpriv usersandbox" GENTOO_MIRRORS="http://mirror.switch.ch/ftp/mirror/gentoo/ http://www.ibiblio.org/pub/Linux/distributions/gentoo/" LANG="C" LDFLAGS="-Wl,-O1" MAKEOPTS="-j11" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_EXTRA_OPTS="--exclude-from=/etc/portage/rsync_excludes" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.de.gentoo.org/gentoo-portage" USE="X aac aalib acl acpi alsa amd64 audacious audiofile avi bash-completion berkdb bluetooth bonobo branding browserplugin bzip2 cairo caps cdparanoia cdr cli cracklib crypt cups curl dbus dga dlloader dri dvd dvdr dvdread emboss encode esd evo faad fam fbcon ffmpeg fftw firefox flac gd gdbm gif glitz glut gnutls gtk gtk2 gtkhtml iconv imap imlib ipv6 isdnlog java joystick jpeg libnotify libsamplerate mad mbox midi mikmod mmx mmxext modplug mp3 mpeg mudflap multilib musepack ncurses network nls nptl nptlonly nsplugin ntpl nvidia offensive ogg opengl openmp oss pam pcre pdf perl png pnp ppds pppd pulseaudio pwdb python qt3support quicktime readline reflection samba sdl session sid sndfile sox spell spl sse sse2 ssl startup-notification svg sysfs theora threads tiff truetype udev unicode usb userlocales vorbis wma xcb xcomposite xml xorg xosd xscreensaver xulrunner xv xvid xvmc zlib" ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" USERLAND="GNU" VIDEO_CARDS="nvidia nv" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- mplayer use build: Installed versions: 1.0_rc2_p28058-r1(02:44:23 01/13/09)(X a52 aac aalib alsa ass cdparanoia dga dvd encode esd fbcon gif gtk iconv ipv6 jpeg kernel_linux live mad mmx mmxext mp3 musepack opengl oss png pulseaudio quicktime rtc samba sdl sse sse2 theora truetype unicode vorbis xscreensaver xv xvid xvmc -3dnow -3dnowext -altivec -amrnb -amrwb -arts -bidi -bindist -bl -cddb -cdio -cpudetection -custom-cflags -custom-cpuopts -debug -dirac -directfb -doc -dts -dv -dvb -dvdnav -dxr3 -enca -ftp -ggi -jack -joystick -ladspa -libcaca -lirc -lzo -md5sum -mng -mp2 -nas -nemesi -openal -pnm -pvr -radio -rar -real -schroedinger -speex -ssse3 -svga -teletext -tga -v4l -v4l2 -video_cards_mga -video_cards_s3virge -video_cards_tdfx -video_cards_vesa -vidix -win32codecs -x264 -xanim -xinerama -zoran) ---------------------------------------------------------------------------- Reproducible: Always
Hard to describe what "shuttering" means here. It's like a 20ms mute pause every 200ms. A bit like a buffer underrun.
ok, i narrowed it down: 28219 is the last good version. 28220 triggers the bug svn diff -r28219:28220 Index: mplayer.c =================================================================== --- mplayer.c (revision 28219) +++ mplayer.c (revision 28220) @@ -2015,6 +2015,7 @@ current_module="play_audio"; while (1) { + int sleep_time; // all the current uses of ao_data.pts seem to be in aos that handle // sync completely wrong; there should be no need to use ao_data.pts // in get_space() @@ -2026,7 +2027,9 @@ // handle audio-only case: // this is where mplayer sleeps during audio-only playback // to avoid 100% CPU use - usec_sleep(10000); // Wait a tick before retry + sleep_time = (ao_data.outburst - bytes_to_write) * 1000 / ao_data.samplerate; + if (sleep_time < 10) sleep_time = 10; // limit to 100 wakeups per second + usec_sleep(sleep_time * 1000); } while (bytes_to_write) {
Upstream bugreport sent as: Subject: [MPlayer-advusers] Audio shuttering with Alsa and dmix since r28220 Suggestion to use "ao_data.bps" instead of "ao_data.samplerate" fixes the problem here: sleep_time = (ao_data.outburst - bytes_to_write) * 1000 / ao_data.bps;
Fix got committed upstream now. Newer media-video/mplayer versions work again.
