[MPlayer-DOCS] [PATCH] Improving muxing reliability

Diego Biurrun diego at biurrun.de
Tue Sep 6 17:32:51 CEST 2005


On Mon, Sep 05, 2005 at 05:27:30PM +0200, Guillaume POIRIER wrote:
> 
>   your video and some audio tracks, where no matter how your adjust the

you adjust

>   audio delay, you won't ever get proper sync.

will never

>   It is strongly encouraged to append the <option>harddup</option> video
>   filter at the end of the filter chain to avoid that kind of problems.

this kind of problem

>   Without <option>harddup</option>, <application>MEncoder</application>

Without <option>harddup</option>, if <application>MEncoder</application>

>   wants to duplicate a frame, it writes a zero byte frame into the muxer,
>   causing an empty AVI packet that just maintains sync while writing no
>   actual frame.

The last part of the sentence is unclear, how is no actual frame
written?

>   will instead just pushes the last frame displayed again into the filter

push

>   This will result in a slightly bigger file but which won't cause problems
>   when demuxing and remuxing them into other container formats.

This will result in a slightly bigger file, but will not cause problems
when demuxing or remuxing into other container formats.

Diego




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