On date Thursday 2009-07-02 21:02:08 +0200, strk gnashed: > On Thu, Jul 02, 2009 at 04:25:34PM +0200, Udo Giacomozzi wrote: > > > s> I'm not a media expert, but I've seen at least ffmpeg threating > > s> formats differently from codecs. > > > > Is "format" a synonym for "container" ? > > Probably. It's something you need a "demuxer" to open ...
Yes, in the FFmpeg jargon a "format" usually refers to a *container* format, an input format is a demuxer and an output format is a muxer, and libavformat deals with them (yes this is very confusing as the term "format" has many different meanings). > > s> For formats, AS doesn't let you specify anything because it only > > s> supports FLV. Or am I missing something ? > > > > Not true, you can easily show MPEG streams not embedded in a FLV > > container using NetStream: > > > > ---- AS CODE ----------------------------------------------------- > > url = /* any URL to a .MPG file or similar */; > > > > var connection_nc:NetConnection = new NetConnection(); > > connection_nc.connect(null); > > var stream_ns:NetStream = new NetStream(connection_nc); > > video.attachVideo(stream_ns); > > > > stream_ns.play(url); > > ---- AS CODE ----------------------------------------------------- > > > > In the case of a .mpg file, Gnash/Ffmpeg will correctly detect the > > container/format/codec. I guess this applies to a lot more formats. > > I'm aware about this "feature" for Gnash (we designed it that way) > but wasn't aware about the Adobe player allowing it. > > > Probably there is simply no auto-detection for mjpeg available (or why > > would the command line tool fail?). > > Again, I suggest you ask ffmpeg developers about the "why". > Maybe it could be fixed in ffmpeg so gnash would just work. There are some formats (in the sense of "multi-media stream formats") which can't easily be recognized if the extension of the format name is not meaningful, since they don't contain metadata/headers, as in the case when you use the ".jpeg" suffix for an "mjpeg" stream. I believe MJPEG is such a format. Regards. _______________________________________________ Gnash-dev mailing list [email protected] http://lists.gnu.org/mailman/listinfo/gnash-dev
