Hello strk, Tuesday, June 30, 2009, 11:04:39 PM, you wrote: s> You're talking about "format" here, not codec, right ?
Don't know if "mjpeg" classifies as a format or a codec. It's basically one still JPEG image after another in a stream, separated using MIME boundaries just like in a multipart e-mail. The web server serving this stream just tells the client that it will send "mixed/multipart" data. Maybe each "part" of the stream will have it's own content-type, but I don't know that. 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" ? 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. The same happens when using the "ffmpeg" command line tool... ffmpeg -i http://example.com/path/to.mpg test.avi But reading from a IP camera requires an extra parameter: ffmpeg -f mjpeg -i http://camera/stream.jpg test.avi s> We had a discussion about how to support different formats s> in the past, but that discussion didn't result in any implementation. s> The summary should be here: s> http://wiki.gnashdev.org/MediaCapabilities. That seems to talk about detecting available codecs. My case is different in that I know that ffmpeg has all necessary plugins installed but ffmpeg itselfs apparently has no way to detect the required plugin (unless I manually specify it, which works very well). s> Shouldnt' av_find_input_format() find out autonomously the actual s> format by looking at magic numebrs or similar ? Have you asked s> the ffmpeg developers about it ? Maybe we're just not providing s> enough "probe" bytes ? Probably there is simply no auto-detection for mjpeg available (or why would the command line tool fail?). Udo _______________________________________________ Gnash-dev mailing list [email protected] http://lists.gnu.org/mailman/listinfo/gnash-dev
