Changes between Version 22 and Version 23 of FilteringGuide


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Timestamp:
Aug 7, 2012, 11:51:27 PM (4 years ago)
Author:
rogerdpack
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  • FilteringGuide

    v22 v23  
    11= FFmpeg Filtering Guide = 
    22 
    3 FFmpeg has access to many filters and more are added on a regular basis. To see what filters are available with your build see ''ffmpeg -filters''. Refer to the [http://ffmpeg.org/libavfilter.html libavfilter documentation] for more information and examples. This wiki page is for user contributed examples and tips. Contributions to this page are encouraged. 
     3FFmpeg has access to many filters and more are added on a regular basis. To see what filters are available with your build see ''ffmpeg -filters''.  
     4 
     5== Documentation == 
     6 
     7Refer to the [http://ffmpeg.org/ffmpeg.html FFmpeg documentation] (sections "audio/video source/filters/sink") for each filters' documentation and examples. This wiki page is for user contributed examples and tips.  
     8 
     9Contributions to this page are encouraged. 
    410 
    511== Examples == 
     
    1016ffmpeg -i input -vf scale=iw/2:-1 output 
    1117}}} 
    12 ''iw'' is input width. In this example the input width is 640. 640/2 = 320. The ''-1'' tells the scale filter to preserve the aspect ratio of the output, so in this example the scale filter will choose a value of 240. See the [http://ffmpeg.org/libavfilter.html libavfilter documentation] for additional information. 
     18''iw'' is input width. In this example the input width is 640. 640/2 = 320. The ''-1'' tells the scale filter to preserve the aspect ratio of the output, so in this example the scale filter will choose a value of 240. See the [http://ffmpeg.org/ffmpeg.html FFmpeg documentation] for additional information. 
    1319 
    1420=== Speed up your video === 
    1521 
    16 See [[How to speed up / slow down a video]] for syntax (the setpts filter) 
     22See [[How to speed up / slow down a video]] for syntax (the setpts filter)/time lapse etc. 
    1723 
    1824=== Filtergraph,Chain,Filter relationship ===