[x265] My bug reports for rev. ~400-450

[Shazeb Khan]

Hi Mario,

We were also observing the crash which you raised concern about, but it was
fixed in a recent commit: 'Adapting weightp primitive for pixel input'. I
hope you were running on a build prior to this commit.

I however tried to reproduce the case you reported, by:
1) converting Sintel_trailer video to 640x272 y4m (in order to match your
input)
2) and encoding with the parameters you provided :
             x265.exe sintel_trailer_2k_272p24.y4m -o
sintel_trailer_360.hevc -F3 -q 12 -b 3 --b-adapt 2 --bframe-bias 30
--weightp --ref 3 -i 240 --no-psnr --ssim --rdpenalty 1 --csv
sintel_trailer_360.csv

and did not observe any crash on VC11-x86_64 build.

I request you to please check with latest repo, and let me know if it
persists.

Moreover weighted prediction (--weightp) is yet not ready to work with
frameparallelism (-F 3).


Thanks & Regards,
Shazeb


On Tue, Oct 22, 2013 at 2:07 PM, Mario *LigH* Rohkrämer <contact at ligh.de>wrote:

> Am 22.10.2013, 09:02 Uhr, schrieb Mario *LigH* Rohkrämer <contact at ligh.de
> >:
>
>
>  One more bug: Although the video was set to exactly 24.0 fps, x265
>> reports "23Hz":
>>  +----
>> y4m  [info]: 640x272 23Hz, frames 0 - 1252 of 1253
>> +----
>>
>
> Well, the reason here is a little strange.
>
> The file "sintel_trailer_360.y4m" contains the following header:
>
> +----
> YUV4MPEG2 W640 H272 F72070:3003 Ip A0:0
> +----
>
> which results in a framerate of 72070/3003 ~ 23.999333 fps, whereas the
> file "sintel_trailer_1080.y4m" contains the following header:
>
> +----
> YUV4MPEG2 W1920 H1080 F24:1 Ip A0:0 C420mpeg2 XYSCSS=420MPEG2
> +----
>
> I believe the tool avs2yuv will have its reasons to use such different
> headers, maybe the AviSynth script returned inexact values. I'll try to
> rebuild the Y4M with forced 24.0 fps.
>
> So the only small piece to nitpick is that x265 truncates to the next
> lower integer framerate, instead of reporting a useful decimal resolution.
>
>
> --
> __________
>
> Fun and success!
> Mario *LigH* Rohkrämer
> mailto:contact at ligh.de
>
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