[vlc-devel] Figured out streaming issues and why youtube works better than VLC player

Tony Anecito adanecito at yahoo.com
Mon Oct 18 10:13:11 CEST 2010

Hi Remi,

Thanks for the quick response. I verified that youtube is storing the video by 
deleting my internet explorer temp files then when replaying the video the 
lighter red progress bar in the middle of the slider is gone when first playing 
the video and if I did not delete the temp internet files the light red bar in 
the middle of the slider is present and spans the entire length of the slider in 
the youtube page.

I am using Windows 7 by the way.

How do I increase the size of the input stream buffer from within vlc 1.5 
luggage dated 2010 10/18? Are you talking about the http cache time?

Also you mention a recent VLC update yet I have the latest vlc nightly. I did 
notice in the area of the QT4 GUI when vlc is running where rate and time is 
displayed that it seems to get a background progress color when VLC seems to 
re-buffer after a pts issue.

I am thinking to default values of VLC after an install are great for files and 
smaller streaming videos but with HD or HQ streaming they will not work very 
well. So I am just trying to find a set of values for vlc for HD & HQ for my 
system and network that work well.



----- Original Message ----
From: Rémi Denis-Courmont <remi at remlab.net>
To: Mailing list for VLC media player developers <vlc-devel at videolan.org>
Sent: Mon, October 18, 2010 12:42:43 AM
Subject: Re: [vlc-devel] Figured out streaming issues and why youtube works 
better than VLC player

On Sun, 17 Oct 2010 22:53:57 -0700 (PDT), Tony Anecito
<adanecito at yahoo.com> wrote:
> 1. The youtube player appears to cache very quickly like maybe it changes
> the video request rate somehow so the user does not have to wait very
> But the replay is at the 1.0 rate. It is almost like having a FIFO buffer
> with a read rate for playback and a write into FIFO rate much higher if
> bandwidth permits it.

VLC does that too, although it probably has a smaller read-ahead buffer.
That's why recent VLC version have an explicit "Buffering" state.

> 2. The video is saved to disk for replay next time the player is invoked
> for that specific video via the internet or http.

I have never observed that behavior on YouTube. Are you sure it is not your
HTTP proxy rather than your hard drive?

> So my question is what setting do we need to get the same behavior where
> the video is cached (very quickly) ahead of the playback?

Just need to increase the size of the input stream buffer.

Rémi Denis-Courmont

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