![]() ![]() There are trickier issues with binary compatibility here, but perhaps they could be overcome if the data in the codec finder service were well-maintained. Similarly, if a Linux user came across an MPEG4 file, a similar thing could happen (if the necessary licensing agreements were in place). As a side-effect, players like Windows Media Player would also gain the ability to play Theora, because it uses DirectX too. If the user said yes, Firefox would go away, download DirectX Theora and Vorbis codecs, install them at OS level, and then start playing the video via DirectX as normal. ![]() ![]() So if a Windows user came across an Theora file, Firefox would (ideally) say something like “I can’t play this – get codec?”. Like the plugin finder, when it encountered media using a codec which it could not read, it would ask a codec finder service if a codec was available, but then instead of installing a browser-specific plugin it would install the codec at OS level. So a Firefox codec downloader might be a good addition to core Firefox. There are very few or no formats that Windows, Mac and free Linux all can and do support. This decision has certain implications for cross-OS web video interoperability. It looks like the implementation of HTML5 in Firefox will use the native system media framework (DirectX, QuickTime, GStreamer) rather than come with any built-in codecs.
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