[vlc-devel] macosx: caching problem in 0.9.2
rem at videolan.org
Tue Sep 16 18:20:58 CEST 2008
Le mardi 16 septembre 2008 04:29:52 Max Amanshauser, vous avez écrit :
> Playing content over smb over WLAN
...is probably not the best idea.
> results in audio (always) and video (sometimes) stuttering, every couple of
> seconds. Bandwidth and latency however are quite good.
Either this is not true, and/or you have packet loss - which TCP, hence CIFS,
do not cope well with.
> In 0.8.6 stuttering was generally resolved by increasing the caching
> value for the File Access Module. In 0.9.2 this has no effect at all.
True, that is a bug in 0.9.x.
Then again, to most users, customizing file-caching is not an acceptable
(=user-friendly) solution. Also, we get a lot more complaints about the VLC
PTS delay being too long rather than too short. And secondly, the industry is
slowly moving to SSD for storage, which means seeking-induced I/O glitch will
loose significance, which means the second-long PTS delay for files will
In my not-so-humble opinion, VLC should be ridden of all the *-caching
settings and do proper delay-jitter calculation instead. In your case, that
would cause some glitches early on, and then adapt without (power) user
> In 0.8.6 playback is delayed slightly after starting, because the
> cache is being filled; in 0.9.2 no such behaviour is observed and the
> stuttering continues.
0.9.2 defaults to 1 second file caching, as does 0.8.6. That being
insufficient is quite pathological a case for a _file_system_.
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