EBML_ID_FLAGFORCED

常量
define('EBML_ID_FLAGFORCED', 0x15AA); // [55][AA] -- Set if that track MUST be used during playback. There can be many forced track for a kind (audio, video or subs), the player should select the one which language matches the user preference or the default + forced track. Overlay MAY happen between a forced and non-forced track of the same kind.
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EBML_ID_FLAGFORCED:这个常量代表Matroska文件的EBML结构中的 “Flag Forced “元素。它指定当有多个音频或字幕轨道可用时,是否要使用一个特定的轨道或流。

define('EBML_ID_FLAGFORCED',                    0x15AA); //         [55][AA] -- Set if that track MUST be used during playback. There can be many forced track for a kind (audio, video or subs), the player should select the one which language matches the user preference or the default + forced track. Overlay MAY happen between a forced and non-forced track of the same kind.

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