On Donnerstag, 10. März 2016 22:47:38 CET Clément Bœsch wrote: > On Thu, Mar 10, 2016 at 06:12:57PM +0100, Gerion Entrup wrote: > [...] > > > > - an USF demuxer which extracts the timing and text (with its markup) of > > > > > > every event, and put them into an AVPacket > > > > > > - introduce an USF codec and write a decoder that will transform the > > > > > > xml-like markup into ASS markup (see below) > > > > I've implement such a demuxer and decoder, based on SAMI (see other mail). > > But XML parsing with the builtin tools is a real pain and hard to extend > > later. > > > > If the GSoC project come off, please let me change this and maybe the SAMI > > code into code based on a xmllib. Header parsing should be doable then as > > well. > I don't mind that much, but keep in mind that SAMI is typically an old > broken mutant HTML based format, with unclosed tags and various other > insanities. And aside from the madness of the specifications, you have no > idea how broken the files in the wild can be. If you want to pick a > library, you have to make sure it's able to fallback on its feet when > getting unexpected input. Doing a memory search for the timing marker is > often the most reliable thing to do when dealing with subtitles, in > general. > > [...]
Combining this with the idea of Nicolas could work. To specify, write a (generic) xml parser, but add the ability to say, the tag XY is more important than other tags and also could not be nested. A parser then could parse the XML file normally up to point where the file is broken (closing tag not reached etc.) outputs a warning, but search for the next "important" tag. But back to GSoC. I'm assuming that sadly noone is willing to mentor this project (have waited quite a time). So I'm thinking to look for another task and therefore a question: What do you think will be the (mentored) task, that will bring the innermost understanding of the framework? _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
