libavcodec/webp.c:600: error: Integer Overflow L2
  ([1, 2147483616] + 32):signed32 by call to `av_frame_get_buffer`.

libavcodec/webp.c:600:15: Call
598.         ret = ff_thread_get_buffer(s->avctx, &pt, 0);
599.     } else
600.         ret = av_frame_get_buffer(img->frame, 1);
                   ^
601.     if (ret < 0)
602.         return ret;

libavutil/frame.c:161:1: Parameter `frame->nb_samples`
  159. }
  160. 
  161. int av_frame_get_buffer(AVFrame *frame, int align)
       ^
  162. {
  163.     if (frame->format < 0)

libavutil/frame.c:169:16: Call
  167.         return get_video_buffer(frame, align);
  168.     else if (frame->nb_samples > 0 && frame->channel_layout)
  169.         return get_audio_buffer(frame, align);
                      ^
  170. 
  171.     return AVERROR(EINVAL);

libavutil/frame.c:112:1: Parameter `frame->nb_samples`
    110. }
    111. 
    112. static int get_audio_buffer(AVFrame *frame, int align)
         ^
    113. {
    114.     int channels = av_get_channel_layout_nb_channels(frame->channel_layout);

libavutil/frame.c:120:15: Call
    118. 
    119.     if (!frame->linesize[0]) {
    120.         ret = av_samples_get_buffer_size(&frame->linesize[0], channels,
                       ^
    121.                                          frame->nb_samples, frame->format,
    122.                                          align);

libavutil/samplefmt.c:108:1: <LHS trace>
106. }
107. 
108. int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples,
     ^
109.                                enum AVSampleFormat sample_fmt, int align)
110. {

libavutil/samplefmt.c:108:1: Parameter `nb_samples`
      106. }
      107. 
      108. int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples,
           ^
      109.                                enum AVSampleFormat sample_fmt, int align)
      110. {

libavutil/samplefmt.c:124:9: Binary operation: ([1, 2147483616] + 32):signed32 by call to `av_frame_get_buffer` 
      122.             return AVERROR(EINVAL);
      123.         align = 1;
      124.         nb_samples = FFALIGN(nb_samples, 32);
                   ^
      125.     }
      126. 
