字幕文件ASS和SSA有什么区别?

SSA是[V4 Styles]而ASS是[V4+ Styles]
V4+的代码是基于V4 但是高于V4的
而且2个字幕文件内的格式差别比较大.....
一般SSA做起来比较方便 ASS的功能更完善一点
个人感觉现在SSA比较普遍一点

下面是我自己弄的一个ASS 点阵图的一个代码
[Script Info]
Title: Image to ASS Draw commands v0.5 [by Diclonius Subs]
ScriptType: v4.00+
PlayResX: 640
PlayResY: 480

[V4+ Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
Style: Default,Arial,20,&H00FFFFFF,&H0000FFFF,&H00000000,&H00000000,0,0,0,0,100,100,0,0,1,0,0,7,0,0,0,0
Style: Image,Arial,20,&H00FFFFFF,&H0000FFFF,&H00000000,&H00000000,0,0,0,0,100,100,0,0,1,0,0,7,0,0,0,0
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,00:00:01.00,00:00:30.00,Image,,0000,0000,0000,,{\fad(150,150)}{\1a&H00&\pos(0,0)\c&H1B93F3&}{\p1}m 0 0 l 0 1 1 1 1 0{\p0}

这个下面是SSA的一个带上方移动字幕的实例
[Script Info]
ScriptType: v4.00
Collisions: Normal
PlayResY: 480
PlayResX: 640
PlayDepth: 0
Timer: 100.0000

[V4 Styles]
Format: Name,Fontname,Fontsize,PrimaryColour,SecondaryColour,TertiaryColour,BackColour,Bold,Italic,BorderStyle,Outline,Shadow,Alignment,MarginL,MarginR,MarginV,AlphaLevel,Encoding
Style: New Style,幼圆,30,16777215,4227327,8404992,16744448,0,0,1,1,2,2,30,30,12,0,134

[Events]
Dialogue: Marked=0,0:00:01.30,0:01:28.90,Default,,0000,0000,0000,Banner;28;0;60,郑重声明:本作品之片源、字幕均来自互联网，版权归原电影公司所有。任何组织和个人不得公开传播或用于任何商业盈利用途，否则一切后果由该组织或个人承担！本站和制作者不承担任何法律及连带责任！请自觉于下载后24小时内删除。如果喜欢本片，请购买正版！{\move(20, 20,20,20}