On Mon, Feb 10, 2014 at 1:46 PM, dave <[email protected]> wrote: > On 02/10/2014 10:41 AM, Steve Borho wrote: > > > > > On Thu, Jan 30, 2014 at 12:31 PM, Steve Borho <[email protected]> wrote: > >> >> >> >> On Wed, Jan 29, 2014 at 5:13 PM, dave <[email protected]> wrote: >> >>> Hi All, >>> >>> I would like to offer my services and contribute to x265 development. >>> From the wiki it looks like there are plenty things to do but I don't want >>> to duplicate or interfere with the work of anyone else so if someone can >>> give me something to do I would appreciate it. I am open to anything >>> needed by x265, both c/c++ and assembly work though I don't mind being >>> given something simple just to get started. You can find me in the x265 >>> irc channel as dtyx265. >> >> >> Hi Dave. >> >> I've been collecting the more pressing TODO items in the bitbucket >> repository's issue tracker: >> https://bitbucket.org/multicoreware/x265/issues?status=new&status=open >> >> #21 (enabling the VUI message) is the most pressing of the "simple" >> problems. That would be a great place to start. >> > > Hi Dave, > > How are things going on this front? > > -- > Steve Borho > > > _______________________________________________ > x265-devel mailing > [email protected]https://mailman.videolan.org/listinfo/x265-devel > > I studied the VUI in the h265 spec, appendix E and have been studying the > x265 code from your suggested starting point, > setVuiParametersPresentFlag(). It looks like most fields are set to spec > defaults. Some look like values that can be options specified by the user, > others look like values that are calculated from encoding a video. > > Can you tell me more about just what pts and dts are? I understand > generally what they are but it seems like there are a few places in the VUI > where they might play a role in calculating values. I haven't had a chance > yet to compare to x264 code yet so if it all becomes obvious there then I > will get it. >
pts is the presentation time stamp of a frame, the point at which it is supposed to be displayed by the decoder. dts is the decode time stamp of a frame, the point when the decoder is supposed to begin decoding it. Both are usually specified in units of the frame rate. Since the pts & dts are frame parameters and the VUI is a stream parameter, I don't they are directly related, except that the denominator is likely signaled in some way. > I tried to create a user account on bitbucket so I could have issue 21 > assigned to me but I keep getting > BB might not allow issues to be assigned to users who don't have push access anyway, so don't be too concerned about this. You can add a comment to the issue stating you are working on it. Patches should go through this mailing list anyway. -- Steve
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