Doom9's Forum - View Single Post - Cannot pass bitrate via command line when using mencoder's profiles

mulder77 · 4th December 2010, 14:43

Hi,

I have different profiles for x264 encoding defined.
This setup has been working until some updates on my Fedora system were in place.

Currently these versions are installed:

Code:

x264.x86_64                                                 0.0.0-0.28.20100706gitd058f37.fc14                                            @rpmfusion-free
x264-libs.x86_64                                            0.0.0-0.28.20100706gitd058f37.fc14                                            @rpmfusion-free

mencoder.x86_64                                                1.0-0.119.20100703svn.fc14                                                 @rpmfusion-free

My goal is a 2-pass encoding with a target filesize. My script calculates the target bitrate after the first pass and calls mencoder like this:

Code:

mencoder input -profile pass2 -x264encopts bitrate=1234 -o output

When doing so, x264 fails:

Code:

x264 [error]: constant rate-factor is incompatible with 2pass.

So the bitrate isn't set.

If I add bitrate to my profile or call all in the command line without the usage of a profile, everything is ok.

Was is broken here and how do I fix it? As mentioned, in my previous setup (on Fedora 12) it was always ok.

Thanks
Markus

4th December 2010, 14:43	#1 \| Link
mulder77 Registered User Join Date: Dec 2002 Posts: 9	Cannot pass bitrate via command line when using mencoder's profiles Hi, I have different profiles for x264 encoding defined. This setup has been working until some updates on my Fedora system were in place. Currently these versions are installed: Code: x264.x86_64 0.0.0-0.28.20100706gitd058f37.fc14 @rpmfusion-free x264-libs.x86_64 0.0.0-0.28.20100706gitd058f37.fc14 @rpmfusion-free mencoder.x86_64 1.0-0.119.20100703svn.fc14 @rpmfusion-free My goal is a 2-pass encoding with a target filesize. My script calculates the target bitrate after the first pass and calls mencoder like this: Code: mencoder input -profile pass2 -x264encopts bitrate=1234 -o output When doing so, x264 fails: Code: x264 [error]: constant rate-factor is incompatible with 2pass. So the bitrate isn't set. If I add bitrate to my profile or call all in the command line without the usage of a profile, everything is ok. Was is broken here and how do I fix it? As mentioned, in my previous setup (on Fedora 12) it was always ok. Thanks Markus Last edited by mulder77; 4th December 2010 at 14:45.