vlc ignores the video bitrate transcoding option

*nix specific usage questions
Consystor
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vlc ignores the video bitrate transcoding option

Postby Consystor » 14 Feb 2008 16:40

Hello!

If I use vlc for example by:
vlc --intf dummy "${URL_NEW}" --sout '#transcode{vcodec=mp4v,vb=384,scale=1,acodec=mp3,ab=96,channels=2}:duplicate{dst="std{access=http,mux=asf,dst=:1234}"}'

then vlc ignores the video bitrate option.

I've read that this is a bug which occurs with newer versions of ffmpeg here:
Comment by Apollon Oikonomopoulos (apoikos) - Wednesday, 23 January 2008, 17:35 GMT-5
Update: it seems that with ffmpeg-20071204 vlc ignores the video bitrate transcoding option [1] and streams with enormous bitrates (~6 Mbps for a 640x480 MPEG-4 stream). The issue was resolved by compiling against the ffmpeg-20070505 tree, the previous version of ffmpeg in Arch Linux.

Summary: it seems that recent ffmpeg breaks a lot of stuff in vlc. ...
And the end of the thread there is the information that the problem is solved in vlc 0.8.6d-2
So, is there a possibility to get this version of vlc?

Regards,
Lukas

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Re: vlc ignores the video bitrate transcoding option

Postby Jean-Baptiste Kempf » 14 Feb 2008 19:04

Can you fill a bug ?
Jean-Baptiste Kempf
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Consystor
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Re: vlc ignores the video bitrate transcoding option

Postby Consystor » 14 Feb 2008 20:12

Hello!

Now it works...

For people who are interested (maybe in the future)
I've downloaded the vlc 0.8.6d-2 version here:
http://dag.wieers.com/rpm/packages/vlc/ ... rf.src.rpm

Then I've extracted the rpm (with rpm2cpio and cpio - under FreeBSD), applied the patches inside to vlc-0.8.6d manually, built vlc against ffmpeg-20061215 statically (by './configure --enable-ffmpeg --with-ffmpeg-tree=ffmpeg-20061215 ...') from the rpm archive and now transcode doesn't ignore the video bitrate setting anymore. :)

Regards
Lukas

PS:
All I know is, that the bug is existent in:
vlc-0.8.6d under FreeBSD with the current ffmpeg-2007.10.04_1 version from FreeBSD's ports system.
Other functions of vlc work fine (only gui modules are bad but that could be because of some old libs of my system etc.).

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Re: vlc ignores the video bitrate transcoding option

Postby tonj » 03 Sep 2013 21:39

yes I had the same problem with centos6 64bit and the solution was to uninstall vlc and install vlc -1.1.13-1.el6.rf.x86_64.rpm using:
yum install -1.1.13-1.el6.rf.x86_64.rpm
I got it from here:
http://apt.sw.be/redhat/el6/en/x86_64/r ... x86_64.rpm
during the install I had to do 'yum downgrade' on a few packages to stop it complaining but once vlc was in it no longer ignored the vb and it worked fine.


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