Re: Smooth in mplayer, choppy in vlc

>>>>>>>> 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
>
>
> Did you try and play just pure AAC audio? It could be an a/v sync issue.


I'm not sure how to get ahold of a sample like that.  Do you know of
one available online?

It's worth mentioning that the problem also doesn't exhibit itself with mpv.

- Grant
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