versions:main
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| - | ====== Avidemux Versions ====== | ||
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| - | They are 3 main flavors of Avidemux. | ||
| - | ====== 2.4/2.5 ====== | ||
| - | 2.4 and 2.5 share the same core. This core allows frame accurate seeking at every stages (encoding, filters,...).\\ | ||
| - | That's good to create very powerful filters. The problem is that they can only handle strict constant framerate video, | ||
| - | i.e. without "holes" and without them changing (for example 24 fps<->30 fps in hybrid NTSC DVD). \\ | ||
| - | \\ | ||
| - | If the video is not strictly constant frame rate or damaged, you end up with a/v sync errors.\\ | ||
| - | 2.4/2.5 handle frame ordering internally to provide the 100% frame seeking accuracy. But the reordering model of H264 is too complicated, so in that case, accuracy is lost.\\ | ||
| - | \\ | ||
| - | So, in a nutshell, 2.4 and 2.5 are frame oriented, time = frameNumber * timeBase. | ||
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| - | 2.4 is a monolithic program. Everything is compiled in, it installs basically one file : avidemux2_gtk/avidemux2_qt4.\\ | ||
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| - | 2.5 is a plugin oriented version of 2.4. Half of the functionalities are handled through a plugin system.\\ | ||
| - | Of course, 2.5 being a much more recent version, it benefits from a lot of improvements, mainly done by Gruntster. | ||
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| - | ===== 2.6 ===== | ||
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| - | 2.6 is a mostly rewritten core that deals with time, not frames.\\ | ||
| - | It can handle (slightly) damaged stream and varying frame rate without causing a/v sync errors or duplicating frames when it is not needed.\\ | ||
| - | The frame reordering is done by the decoder, so H264 videos are handled like other codecs.\\ | ||
| - | That also implies that a lot of the frame accuracy has been lost, and the video filter subsystem is much less powerful. | ||
| - | 2.6 has also support for VDPAU, so that editing H264 video is slighly faster. | ||
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versions/main.txt ยท Last modified: 2012/11/11 08:51 (external edit)
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