[vlc] Smooth in mplayer, choppy in vlc

dE de.techno at gmail.com
Tue Nov 4 15:50:11 CET 2014


On 11/04/14 03:03, Grant wrote:
>>>>>>> You're right, I tried a 1080p Blu-Ray rip and it is also choppy with
>>>>>>> audio enabled and smooth with audio disabled.  mplayer plays both the
>>>>>>> Blu-Ray rip and the 60fps file smoothly.  I fiddled with the vlc audio
>>>>>>> settings to no avail.  Do you know how to fix this?
>>>>>> mplayer is probably using alsa, and VLC is using pulseaudio. Try
>>>>>> switching
>>>>>> the audio output between alsa and pulse in VLC.
>>>>>
>>>>> I'm on Gentoo and I don't have pulseaudio installed.  I've tried
>>>>> designating ALSA specifically in the vlc settings but performance is
>>>>> still choppy.
>>>>
>>>> You got libsamplerate, ffmpeg set? If it still doesnt work, try building
>>>> with these USE flags --
>>>>
>>>> X a52 aalib alsa avcodec avformat cdda dbus dirac dts dvbpsi dvd encode
>>>> ffmpeg flac kde libass libnotify libsamplerate matroska mmx mp3 mpeg
>>>> musepack ogg opengl png postproc qt4 schroedinger sdl sdl-image sid skins
>>>> speex sse svg swscale taglib theora truetype twolame udev v4l vaapi vcdx
>>>> vorbis x264 xcb xml xv -altivec -atmo -audioqueue -avahi -bidi -bluray
>>>> -cddb
>>>> -chromaprint -dc1394 -debug -directfb -directx -dvb -dxva2 -egl -faad
>>>> -fdk
>>>> -fluidsynth -fontconfig -gcrypt -gme -gnome -gnutls -growl -httpd
>>>> -ieee1394
>>>> -ios-vout -jack -kate -libcaca -libtar -libtiger -linsys -lirc -live -lua
>>>> -macosx -macosx-audio -macosx-dialog-provider -macosx-eyetv -macosx-qtkit
>>>> -macosx-quartztext -macosx-vout -media-library -modplug -mtp -ncurses
>>>> -neon
>>>> -omxil -opencv -optimisememory -opus -projectm -pulseaudio -qt5 -rdp
>>>> -rtsp
>>>> -run-as-root -samba -sftp -shout -test -tremor -upnp -vdpau -vlm -vnc
>>>> -wma-fixed -zvbi
>>>>
>>>> Just for testing.
>>>
>>> I switched to all of that except for kde and the result is the same.
>>
>> C(XX)FLAGS?
>
> -march=native -O2 -pipe -fomit-frame-pointer
>
>
>> What's your version of VLC?
>
> I've tried 2.1.2 and 9999 (latest from git).
>
>
>> Anything you've done in a/52 preference in VLC (in all
>> preferences>audio/video codec>a/52)?
>
> I've tried with and without dynamic range compression and the internal
> upmixer.  No other options there.
>
>
>> Since when did this start to happen? What's you're version of
>> media-libs/a52dec?
>
> Previously, I didn't usually play videos on this system so it may have
> been happening for a while.  It wasn't happening about a year or so
> ago.  I've tried a52dec-0.7.4-r6 and 0.7.4-r7.
>
> I just noticed that every time it stutters I get this in the console:
>
> core input error: ES_OUT_SET_(GROUP_)PCR  is called too late
> (pts_delay increased to 300 ms)
> core input error: ES_OUT_RESET_PCR called
>
> - Grant
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Did you try and play just pure AAC audio? It could be an a/v sync issue.



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