Revision 2bc05d35

View differences:

Changelog
37 37 
- R10k video decoder
38 38 
- ocv_smooth filter
39 39 
- frei0r wrapper filter
40 
- change crop filter syntax to width:height:x:y
40 41 

  		




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version 0.6:


  		












  

    
      doc/ffmpeg-doc.texi
    
  





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@item -aspect @var{aspect}


  		




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Set aspect ratio (4:3, 16:9 or 1.3333, 1.7777).


  		




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@item -croptop @var{size} (deprecated - use -vf crop=x:y:width:height instead)


  		




  
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@item -croptop @var{size} (deprecated - use the crop filter instead)


  		




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Set top crop band size (in pixels).


  		




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@item -cropbottom @var{size} (deprecated - use -vf crop=x:y:width:height instead)


  		




  
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@item -cropbottom @var{size} (deprecated - use the crop filter instead)


  		




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Set bottom crop band size (in pixels).


  		




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@item -cropleft @var{size} (deprecated - use -vf crop=x:y:width:height instead)


  		




  
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@item -cropleft @var{size} (deprecated - use the crop filter instead)


  		




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Set left crop band size (in pixels).


  		




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@item -cropright @var{size} (deprecated - use -vf crop=x:y:width:height instead)


  		




  
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@item -cropright @var{size} (deprecated - use the crop filter instead)


  		




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Set right crop band size (in pixels).


  		




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@item -padtop @var{size}


  		




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@item -padbottom @var{size}


  		












  

    
      doc/filters.texi
    
  





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@section crop


  		




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Crop the input video to @var{x}:@var{y}:@var{width}:@var{height}.


  		




  
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Crop the input video to @var{width}:@var{height}:@var{x}:@var{y}.


  		




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@example


  		




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./ffmpeg -i in.avi -vf "crop=0:0:0:240" out.avi


  		




  
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./ffmpeg -i in.avi -vf "crop=0:240:0:0" out.avi


  		




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@end example


  		




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@var{x} and @var{y} specify the position of the top-left corner of the


  		




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output (non-cropped) area.


  		




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The default value of @var{x} and @var{y} is 0.


  		




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The @var{width} and @var{height} parameters specify the width and height


  		




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of the output (non-cropped) area.


  		




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A value of 0 is interpreted as the maximum possible size contained in


  		




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the area delimited by the top-left corner at position x:y.


  		




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@var{x} and @var{y} specify the position of the top-left corner of the


  		




  
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output (non-cropped) area.


  		




  
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The default value of @var{x} and @var{y} is 0.


  		




  
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For example the parameters:


  		




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@example


  		




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"crop=100:100:0:0"


  		




  
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"crop=0:0:100:100"


  		




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@end example


  		




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will delimit the rectangle with the top-left corner placed at position


  		












  

    
      ffmpeg.c
    
  





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    last_filter = ist->input_video_filter;


  		




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    if (ost->video_crop) {


  		




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        snprintf(args, 255, "%d:%d:%d:%d", ost->leftBand, ost->topBand,


  		




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                 codec->width,


  		




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                 codec->height);


  		




  
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        snprintf(args, 255, "%d:%d:%d:%d",


  		




  
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                 codec->width, codec->height,


  		




  
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                 ost->leftBand, ost->topBand);


  		




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        if ((ret = avfilter_open(&filter, avfilter_get_by_name("crop"), NULL)) < 0)


  		




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            return ret;


  		




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        if ((ret = avfilter_init_filter(filter, args, NULL)) < 0)


  		












  

    
      libavfilter/avfilter.h
    
  





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#include "libavutil/avutil.h"


  		




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#define LIBAVFILTER_VERSION_MAJOR  1


  		




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#define LIBAVFILTER_VERSION_MINOR 40


  		




  
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#define LIBAVFILTER_VERSION_MINOR 41


  		




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#define LIBAVFILTER_VERSION_MICRO  0


  		




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#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \


  		












  

    
      libavfilter/vf_crop.c
    
  





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    CropContext *crop = ctx->priv;


  		




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    if (args)


  		




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        sscanf(args, "%d:%d:%d:%d", &crop->x, &crop->y, &crop->w, &crop->h);


  		




  
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        sscanf(args, "%d:%d:%d:%d", &crop->w, &crop->h, &crop->x, &crop->y);


  		




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    return 0;


  		




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}


  		




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    crop->x &= ~((1 << crop->hsub) - 1);


  		




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    crop->y &= ~((1 << crop->vsub) - 1);


  		




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    av_log(link->dst, AV_LOG_INFO, "x:%d y:%d w:%d h:%d\n",


  		




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           crop->x, crop->y, crop->w, crop->h);


  		




  
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    av_log(link->dst, AV_LOG_INFO, "w:%d h:%d x:%d y:%d\n",


  		




  
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           crop->w, crop->h, crop->x, crop->y);


  		




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    if (crop->x <  0 || crop->y <  0                    ||


  		




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        crop->w <= 0 || crop->h <= 0                    ||


  		




  ......




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AVFilter avfilter_vf_crop = {


  		




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    .name      = "crop",


  		




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    .description = NULL_IF_CONFIG_SMALL("Crop the input video to x:y:width:height."),


  		




  
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    .description = NULL_IF_CONFIG_SMALL("Crop the input video to width:height:x:y."),


  		




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    .priv_size = sizeof(CropContext),


  		




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      tests/lavfi-regression.sh
    
  





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    fi


  		




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}


  		




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do_lavfi "crop"               "crop=100:100"


  		




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do_lavfi "crop_scale"         "crop=100:100,scale=400:-1"


  		




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do_lavfi "crop_scale_vflip"   "null,null,crop=200:200,crop=20:20,scale=200:200,scale=250:250,vflip,vflip,null,scale=200:200,crop=100:100,vflip,scale=200:200,null,vflip,crop=100:100,null"


  		




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do_lavfi "crop_vflip"         "crop=100:100,vflip"


  		




  
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do_lavfi "crop"               "crop=0:0:100:100"


  		




  
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do_lavfi "crop_scale"         "crop=0:0:100:100,scale=400:-1"


  		




  
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do_lavfi "crop_scale_vflip"   "null,null,crop=0:0:200:200,crop=0:0:20:20,scale=200:200,scale=250:250,vflip,vflip,null,scale=200:200,crop=0:0:100:100,vflip,scale=200:200,null,vflip,crop=0:0:100:100,null"


  		




  
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do_lavfi "crop_vflip"         "crop=0:0:100:100,vflip"


  		




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do_lavfi "null"               "null"


  		




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do_lavfi "scale200"           "scale=200:200"


  		




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do_lavfi "scale500"           "scale=500:500"


  		




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do_lavfi "vflip"              "vflip"


  		




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do_lavfi "vflip_crop"         "vflip,crop=100:100"


  		




  
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do_lavfi "vflip_crop"         "vflip,crop=0:0:100:100"


  		




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do_lavfi "vflip_vflip"        "vflip,vflip"


  		




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do_lavfi_pixfmts(){


  		












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