On Fri, Sep 26, 2008 at 10:24:41PM +0300, Ivan Kalvachev wrote: > On 9/24/08, Michael Niedermayer <michaelni@xxxxxx> wrote: > > On Sun, Sep 21, 2008 at 01:06:00AM +0300, Ivan Kalvachev wrote: > >> > [..] > > It seems you missed my past comments ... > > What ffmpeg is heading toward is > > * the demuxers return subtitle packets like any other packet > > Here is THE huge problem. > What does mkv.ass demuxer should return as packet? > > No really, this is how the discussion started. > > Aurel idea is that the mkv demuxer should take the subtitle packet, > convert it into file.ass line. This is done so whatever the next stage > is, it should handle only the already existing file.ass format. > > The previous situation was that the packet was returned in the way it > was stored. > > Should I understand the above text as an indication that you are in favor of > reverting Aurel changes from the lavformat mkv demuxer? The convertion has to be done somewhere, or mkv <-> ass/nut will not work iam not asking for aurels code to be reverted. It though may be possible to have the mkv demuxer return the packets unchanged and have a bitstream filter convert them, but again iam not asking for that, its just an alterantive (and one needing a way to know the timeing that mkv removed). > > > * the subtite decoder decodes these packets to a common subtitle structure > > (AVSubtitle) containing utf-8 text, timestamps/durations, positions, > > effects, bitmaps, font references, ... > > Sounds reasonable. > > > * A common subtitle renderer renders these so they can be displayed or > > a subtitle encoder encodes them to a possibly diferent format again. > > I prefer the term decoder ;) that might lead to confusion when you talk with me :) the idea really is that a decoder would produce a "raw" format and that would for subtitles be something vector based. [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB No human being will ever know the Truth, for even if they happen to say it by chance, they would not even known they had done so. -- Xenophanes
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