On Tue, 8 Mar 2016 20:42:39 +0100 Clément Bœsch <u...@pkh.me> wrote:
> - the handling of the timing is inconsistent: pts is in AV_TIME_BASE and > start/end display time are relative and in ms. Just something I had to encounter recently: pts should be in the user-defined time base (i.e. most likely the AVStream's time base, but not necessarily), and the need for pkt_timebase should die. > The first one is to create an AVSubtitle2 or something in libavutil, > copying most of the current AVSubtitle layout but making sure the user > allocates it with av_subtitle_alloc() or whatever, so we can add fields > and extend it (mostly) at will. > > The second one, which I'm currently wondering about these days is to try > to hold the subtitles data into the existing AVFrame structure. We will > for example have the frame->extended_data[N] (currently used by audio > frames to hold the channels) point on a instances of a newly defined > rectangle structure. Having the subtitles into AVFrame might simplify a > lot the future integration within libavfilter since they are already > supported as audio and video. This needs careful thinking, but it might > be doable. Considering lots of code uses AVFrame to store raw data in a generic way (and requires extra stuff just for subtitles), this will have to be done eventually. But not sure what it'd look like. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
