魔王撒旦
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Good news: h.264 is the same decoder used for HD-DVD. VC-1 is also multi threaded so higher bitrates should now work. Bad news: h.264 profile support is 4.1 for HD and 5.0 and 5.1 for SD (720x576) content (we run out of memory for HD 5.0+ content). MPEG4 is SP only no ASP seatures are supported (B-Frame, QPEL etc.). Also no subtitle support. Bad news: container support is MPEG4 and ASF, audio is WMA or AAC LC 2ch only. Bad news: This updated functionality is for the dash video player only. MCX is a separate product and is completely unrelated to the dash.
原帖由 正版万岁 于 2007-4-13 19:09 发表 可是现在可以下载到的资源都是H264的啊. 10M根本不够用
原帖由 正版万岁 于 2007-4-14 04:12 发表 嗯,一直觉得次世代编码很混乱 有wmv hd, h264, vc-1, mp4 他们之间的关系到底是如何呢?还有那个wvc-1是什么冬冬? 我知道vc-1现在是hd-dvd的编码。好像是唯一商业化的 其他的编码应用情况如何呢? 码率我一直不太理解。在相同分辨率,CBR的条件下,难道码率高就耗运算? 如果说CQ的情况下,碰到剧烈运动画面,码率自动VBR变高了,导致运算负担加重我还能理解 是不是还有profile的不同?比如high profile的编码标准比main profile的编码标准要高?运用了main profile所不具备的更高精度的运算?