Delay/lag in MJPEG live stream

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diafygi
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Delay/lag in MJPEG live stream

Postby diafygi » 21 Sep 2010 18:25

I have a live stream coming from a media server using mjpeg. Here's the example stream address:

Code: Select all

http://192.168.1.25/mjpg/video.mjpg
When I open the stream in Firefox (just type in the url), the stream displays with almost no delay (<20ms). However, when I open the stream in VLC, there is about a 1 second delay/lag in the stream. Is this because VLC is transcoding the stream? Is there a setting that I can use to reduce this delay?

The reason I'm not just using Firefox is because I'd like to have the stream display at fullscreen. Any ideas?

Jean-Baptiste Kempf
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Re: Delay/lag in MJPEG live stream

Postby Jean-Baptiste Kempf » 21 Sep 2010 22:27

VLC has an important http cache by default.
Jean-Baptiste Kempf
http://www.jbkempf.com/ - http://www.jbkempf.com/blog/category/Videolan
VLC media player developer, VideoLAN President and Sites administrator
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diafygi
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Re: Delay/lag in MJPEG live stream

Postby diafygi » 21 Sep 2010 22:31

VLC has an important http cache by default.
Ok, is there an option to reduce the http cache? I'm ok with dropped frames.

Jean-Baptiste Kempf
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Re: Delay/lag in MJPEG live stream

Postby Jean-Baptiste Kempf » 21 Sep 2010 22:32

http-caching
Jean-Baptiste Kempf
http://www.jbkempf.com/ - http://www.jbkempf.com/blog/category/Videolan
VLC media player developer, VideoLAN President and Sites administrator
If you want an answer to your question, just be specific and precise. Don't use Private Messages.

diafygi
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[SOLVED] Re: Delay/lag in MJPEG live stream

Postby diafygi » 29 Sep 2010 18:35

I just wanted to follow up and confirm that I did get rid of the delay/lag in the stream by setting http-caching to zero. There is no time difference between the stream in Firefox and the stream in VLC. Thanks j-b!

Code: Select all

vlc --http-caching=0 http://192.168.1.25/mjpg/video.mjpg

Jean-Baptiste Kempf
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Posts: 37523
Joined: 22 Jul 2005 15:29
VLC version: 4.0.0-git
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Location: Cone, France
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Re: Delay/lag in MJPEG live stream

Postby Jean-Baptiste Kempf » 10 Oct 2010 19:48

:D
Jean-Baptiste Kempf
http://www.jbkempf.com/ - http://www.jbkempf.com/blog/category/Videolan
VLC media player developer, VideoLAN President and Sites administrator
If you want an answer to your question, just be specific and precise. Don't use Private Messages.


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