[vlc] Re: Problem viewing some movies in versions 0.5.2 and 0.5.3 for OS X

[Derk-Jan Hartman]

On maandag, apr 21, 2003, at 15:32 Europe/Amsterdam, Angelo Rosania 
Polo wrote:
> First of all, I'd like to say a big thanks to every person in the 
> group for the fantastic job they're doing... VLC is by far the best 
> Media Player application there is!... Keep up the good work!
We try our best ;)

> I'm having trouble watching some DivX movies (In fact, they're two 
> series of anime encoded in DivX) in later versions of the software in 
> Mac OS X (in the Win32 Version they play fine). I'll try to be as 
> especific as I can (I'm a network administrator and I know how useful 
> it is to have the most info available), so please forgive me if the 
> message is a little long :-)
no problem

> This series (7 chapters) plays completely, with no dropping frames and 
> a very good quality on every VLC up to 0.5.1a. On 0.5.2 and 0.5.3 the 
> audio plays fine but the video plays very slow and dropping a lot of 
> frames. The messages window shows a lot of messages like these:
>
> main warning: late picture skipped (2991505)
> main warning: late picture skipped (2975069)

This means your computer is skipping too slow to play the video. In 
0.5.2 we introduced a new audio re-sampler to take care of the really 
lousy audio quality we were producing on certain macs. Unfortunately, 
this re-sampler is taking an awful lot of CPU. another solution is in 
the works to deal with this problem and should allow you to play these 
movies again in future releases.
Also, in the README there are some pointers as to how you can enable 
'hurry up' on the DIVX decoder to make improve playing of this file.

> Second series:
> Saint Seiya Hades, Approx. 230 MB each chapter, Video Codec DivX 5 
> Aspect 640 x 480  (1.333 : 1), Bitrate 1099 kb/s, Framerate 23.976 
> FPS, Audio MPEG-Layer 3, 160Kb/s, 48000 Hz.
>
> This series (so far 10 chapters) plays completely, but dropping a lot 
> of frames on VLC 0.4.6. On VLC 0.5.0 and up (until 0.5.3) the audio 
> play fine with a black screen and ocassionally one or two still frames 
> for a while and then, about a minute or so into the movie, it displays 
> the following error: main error: failed allocating a new buffer 
> (decoder stuck?). The messages window shows this:
Same story. CPU usage increased dramatically from 0.4.6 to 0.5.0.

> If I use QuickTime with the DivX alpha codec from DivX.com, on both 
> series the video plays beautifully, with no dropping frames, but no 
> audio (the infamous QuickTime bug).
>
> Do you have any idea what could be causing this? In the windows 
> version both of them play OK, and other movies (up to 700 MB in size) 
> play perfectly on the iMac with every single version of VLC (including 
> 0.5.3) it's just these two series...

QT probably has 'hurry up' enabled by default and probably by design is 
less CPU intensive then VLC.
We always strive to be better, so keep your eyes on any future versions 
for improved quality and speed.

Derk-Jan Hartman
---
Videolan - VLC media player
Derk-Jan Hartman (thedj at users.sourceforge.net)
Co-Developer of the MacOS X port of vlc
http://www.videolan.org/vlc

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