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doc: update demuxers section
Cleanup tags usage and update commandline examples.
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@ -49,19 +49,19 @@ sequence of filenames of the form @file{i%m%g-1.jpg},
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The size, the pixel format, and the format of each image must be the
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same for all the files in the sequence.
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The following example shows how to use @file{ffmpeg} for creating a
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The following example shows how to use @command{avconv} for creating a
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video from the images in the file sequence @file{img-001.jpeg},
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@file{img-002.jpeg}, ..., assuming an input framerate of 10 frames per
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second:
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@example
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ffmpeg -r 10 -f image2 -i 'img-%03d.jpeg' out.avi
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avconv -i 'img-%03d.jpeg' -r 10 out.mkv
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@end example
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Note that the pattern must not necessarily contain "%d" or
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"%0@var{N}d", for example to convert a single image file
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@file{img.jpeg} you can employ the command:
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@example
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ffmpeg -f image2 -i img.jpeg img.png
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avconv -i img.jpeg img.png
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@end example
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@section applehttp
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