Changes between Version 34 and Version 35 of FilteringGuide


Ignore:
Timestamp:
Jan 10, 2014, 8:57:28 PM (6 years ago)
Author:
rogerdpack
Comment:

add testsrc example

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  • FilteringGuide

    v34 v35  
    11= FFmpeg Filtering Guide =
    2 [[PageOutline(2, Contents)]]
     2[[PageOutline(2-3, Contents)]]
    33
    44FFmpeg 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`.
     
    281281}}}
    282282
     283=== Test Source ===
     284
     285The testsrc filter is basically an auto generated image FFmpeg can inject.  For instance
     286
     287  ffmpeg -f lavfi -i testsrc=duration=10:size=1280x720:rate=30 out.mpg
     288
     289Would generate a 10 second clip (at 30 fps, so 300 frames total) at 1280x720 (which would then be transcoded and end up in out.mpg file).
     290
     291Here is ffplay with the same:
     292
     293   ffplay -f lavfi -i "testsrc=duration=10:size=1280x720:rate=30"
     294
     295And smptebars example, related:
     296
     297   ffmpeg -f lavfi -i "smptebars=duration=5:size=1280x720:rate=30"  smptebars.mp4
     298
    283299=== Other Filter Examples ===
    284300 * [wiki:FancyFilteringExamples Fancy Filtering Example] – Examples for various psychedelic effects and other weird filtering