Re: Package Scope Recommendations for File_Ogg

On 14 Aug 2003 at 9:30, David Grant wrote: > > Suggestion: How about limiting it to parallel streams? This way it > > would be possible to detect Theora-video with vorbis-audio or > > similar correctly. > > Parallel streams WILL be supported, featuring any of the four current > Ogg projects (Vorbis, Theora, Speex and Flac). :-) > > What files do you think exist "in the wild life"? Okay I could think > > of an ogg-file that contains some audiostreams following each other > > ... maybe if they switch bitrate inbetween or so. But I don't think > > this occurs very often. And if you have a look at mp3, mp3-players > > etc. you will see (as one example) that most programs don't handle > > intermediate bitrate-changes (if its not marked as vbr) correctly. > > It too hard to detect things like this correctly, to parse > > everything (if its a huge file) etc. > > I intend to have a chat with some of the Ogg developers (if I can find > them on an IRC channel) to see if they can point out "unusual" > physical streams, such as a mixture of Vorbis and Speex, for example. > Personally I can't really see the point of concurrant streams unless > it forms part of a audio or video stream. Have a try via irc to irc.xiph.org for a chat. Well I could imagine having one video and let's say 2 audio-streams - maybe German / English or something. Also there might be features like on a DVD: Audio-channel 1: Sound (e.g. from sports) Audio-channel 2: Sounds + comments Audio-channel 3: Just plain comments Or whatever. If that exists that often in real life depends. But afaik it CAN be. > > Using libvorbis etc. directly via a pecl-interface, as proposed by > > Patrick, doesn't seem a good solution for me. Okay, it would save > > you reinventing the wheel. But if it's possible to solve this > > problem in "clean" php (and without taking too much amount of memory > > and time for parsing) I would favor a php-pear- and not a > > pecl-class. With a pecl-solution you are dependent on libvorbis etc. > > I've pointed out that both solutions could be offered. Since I've no > experience in C, I suggest someone else might like to take a look at > it. How do you intend to do that? > > PS: Keep up your motivation, David! > Thanks! Just having fun at the moment. :) Take it eeeassssyyyyy *g* Stefan