Stuttering playback for .rm files.

macOS specific usage questions
mrelwood
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Stuttering playback for .rm files.

Postby mrelwood » 10 Jun 2010 11:43

VLC 1.0.5 and 1.1.0 RC both stutter on a .rm file. Mplayer OSX Extended rev14-test2 plays the file back smoothly, while admittedly having slight pixelating-like aliasing problems.

Stuttering happens both in fullscreen and windowed. The file itself shouldn't be that tough, 424x240 24fps, around 700kb/s. CPU usage for VLC shows around 20%. The stuttering gives the video a 6fps feel, while I think more frames are drawn. The drawing speed just isn't constant.

Memory Mapping didn't affect the result, suggested here:
viewtopic.php?f=12&t=65662

The problem is there only on .rm files. Avi, mpeg, mp4, mov, wmv, asf, etc play back just fine. What should I try next? Or is this a bug in VLC?

MacBook C2D 2.0GHz 2GB
Snow Leopard 10.6.3.

ajmas
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VLC version: 3.0.x
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Re: Stuttering playback for .rm files.

Postby ajmas » 10 Jun 2010 15:14

Hows well does the official player from Real handle it, for comparative purposes?
Providing logs, messages, configuration info (VLC, OS, Hardware) and a clear explanation of the issue always helps the problem solvers help you, even if they don't end up solving the issue. Just think what you would need if you were solving someone else's problem. Additional: Always looking for eager and capable MacOS X developers to join the VLC team - for more information see here.

mrelwood
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Re: Stuttering playback for .rm files.

Postby mrelwood » 10 Jun 2010 17:53

Hows well does the official player from Real handle it, for comparative purposes?
The install procedure reminded me why I've never used RealPlayer before. Turned out to play the video without stuttering and with good picture quality, until I rewind to beginning in fullscreen which hung the app. But when opening RealPlayer the video plays fine every time, even in fullscreen, if I don't rewind.

Terrible app though.

ajmas
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VLC version: 3.0.x
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Re: Stuttering playback for .rm files.

Postby ajmas » 10 Jun 2010 22:35

Are you able to provide access to the video, so we can see what is happening?
Providing logs, messages, configuration info (VLC, OS, Hardware) and a clear explanation of the issue always helps the problem solvers help you, even if they don't end up solving the issue. Just think what you would need if you were solving someone else's problem. Additional: Always looking for eager and capable MacOS X developers to join the VLC team - for more information see here.

mrelwood
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Re: Stuttering playback for .rm files.

Postby mrelwood » 11 Jun 2010 01:53

Are you able to provide access to the video, so we can see what is happening?
Unfortunately no, it's a commercial that hasn't been published yet. I've been trying to find a .rm file to present the problem with, but I barely have any. I'll try to find a suitable clip somewhere.


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