[x265] x265 misses target bitrate in 2-pass VBR; extreme sample: unable to converge

[Divya Manivannan]

Thanks for pointing this issue.

We have found the bug in this commit. We will fix it and let you know.


Thanks,
Divya. M

On Thu, Feb 25, 2016 at 1:47 PM, Mario *LigH* Rohkrämer <contact at ligh.de>
wrote:

> Am 24.02.2016, 13:50 Uhr, schrieb Mario *LigH* Rohkrämer <contact at ligh.de
> >:
>
> Am 24.02.2016, 13:07 Uhr, schrieb Mario *LigH* Rohkrämer <contact at ligh.de
>> >:
>>
>> I will try to recreate this result with some older versions to narrow
>>> down a possible reason...
>>>
>>
>> This issue was introduced between versions 1.8+167-e951ab673b1c and
>> 1.8+201-769081eb5f4c.
>>
>
> 'Ma' in the doom9 forum discovered that it happened after the big patch
> for 2-pass CRF:
>
>
> https://bitbucket.org/multicoreware/x265/commits/73cc1cd4c7fc0920a6b126fefebeea6269749498
>
> http://forum.doom9.org/showthread.php?p=1758434#post1758434
>
> Quite an expectable discovery.
>
>
> --
>
> Fun and success!
> Mario *LigH* Rohkrämer
> mailto:contact at ligh.de
>
> _______________________________________________
> x265-devel mailing list
> x265-devel at videolan.org
> https://mailman.videolan.org/listinfo/x265-devel
>
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