[Libva] VBR control for .h246 enconding

Sanchez, AdolfoX adolfox.sanchez at intel.com
Thu Feb 5 12:33:27 PST 2015


Thanks for your reply Mr.Xiang

-Is there any approximate date of when the VBR support will be added to the driver?
-For testing purposes transconding can be used combining a hardware accelerated decoder+software decoding?


Best Regards,
Adolfo.
-----Original Message-----
From: Xiang, Haihao 
Sent: Wednesday, February 04, 2015 12:14 AM
To: Sanchez, AdolfoX
Cc: libva at lists.freedesktop.org
Subject: Re: [Libva] VBR control for .h246 enconding


> Hello
> 
>  
> 
> I have a few questions regarding the capabilities of libVA for 
> encoding .h264 files:
> 
>  
> 
> This is the code:
> http://cgit.freedesktop.org/vaapi/libva/tree/test/encode
> 
>  
> 
> Can the avcenc.c be used with variable bit rate control? 

No.

> Or modified to use it?

Yes. 

You can also refer to h264encode which might works with PVR driver.

>  
> 
> Is there  any plan to fix the VBR control to the h264encode.c? or it 
> would be possible that someone from Intel commits to fix it?

We will add support for VBR in the driver first.
> 
>  
> 
> If there are no plans to fix VBR and it is not possible that someone 
> from Intel commits to this:
> 
>  
> 
> Are you aware of some other party from the open source community that 
> could be working on doing VBR control for h264 encoding with libVA?
> 
>  
> 
> Could you provide any suggestion about how to perform VBR control for
> h264 encoding using libVA or point to some other site/forum were I 
> could find help regarding this issue?


>  
> 
> Best Regards,
> 
> Adolfo Sanchez
> 
>  
> 
>  
> 
>  
> 
> 
> _______________________________________________
> Libva mailing list
> Libva at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/libva




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