|  | @@ -65,7 +65,7 @@ int doCrop()
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				|  |  |      avfilter_register_all();
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				|  |  |  
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				|  |  | -    char args[512];
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				|  |  | +    char args[512] = {0};
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				|  |  |      const AVFilter *buffersrc  = avfilter_get_by_name("buffer");
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				|  |  |  //    const AVFilter *buffersink = avfilter_get_by_name("ffbuffersink");新版的ffmpeg这里要改成buffersink
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				|  |  |      const AVFilter *buffersink = avfilter_get_by_name("buffersink");
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				|  | @@ -77,7 +77,7 @@ int doCrop()
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				|  |  |      filter_graph = avfilter_graph_alloc();
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				|  |  |  
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				|  |  |      /* buffer video source: the decoded frames from the decoder will be inserted here. */
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				|  |  | -    snprintf(args, sizeof(args),
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				|  |  | +    sprintf(args,
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				|  |  |          "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
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				|  |  |          in_width,in_height,AV_PIX_FMT_YUV420P,
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				|  |  |          1, 25,1,1);
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