4k高清视频黑屏

[iTwinkle]

• (void) texture:(MDVideoFrame*)frame{
  dispatch_sync(dispatch_get_main_queue(), ^{
  int planes[3] = { 0, 1, 2 };
  const GLsizei widths[3] = { frame->pitches[0], frame->pitches[1], frame->pitches[2] };
  const GLsizei heights[3] = { frame->h, frame->h / 2, frame->h / 2 };
  const GLubyte *pixels[3] = { frame->pixels[0], frame->pixels[1], frame->pixels[2] };

    switch (frame->format) {
        case SDL_FCC_I420:
            break;
        case SDL_FCC_YV12:
            planes[1] = 2;
            planes[2] = 1;
            break;
        default:
            NSLog(@"[yuv420p] unexpected format %x\n", frame->format);
            return;
    }
    
    if ([self beginCommit]) {
        for (int i = 0; i < 3; ++i) {
            int plane = planes[i];
            glBindTexture(GL_TEXTURE_2D, self.program.mTextureUniformHandle[i]);
            glTexImage2D(GL_TEXTURE_2D,
                         0,
                         GL_LUMINANCE,
                         widths[plane],
                         heights[plane],
                         0,
                         GL_LUMINANCE,
                         GL_UNSIGNED_BYTE,
                         pixels[plane]);
        }
        [self postCommit];
        
        self.mRendererBegin = YES;
        [self.sizeContext updateTextureWidth:frame->w height:frame->h];
        GLenum errorCode = glGetError();
        if (errorCode)
        {
            printf("glGetError:%d\n", errorCode);
            //throw;
        }
    }
  

  });
  } 你好我播放视频的时候报[yuv420p] unexpected format 4254565f 可能是视频分辨率过大导致的 请问该怎么解决呢