static visualSampleEntry(reader) {
    // Skip 6 reserved bytes.
    // Skip 2-byte data reference index.
    // Skip 16 more reserved bytes.
    reader.skip(24);
    // 4 bytes for width/height.
    const width = reader.readUint16();
    const height = reader.readUint16();
    // Skip 8 bytes for horizontal/vertical resolution.
    // Skip 4 more reserved bytes (0)
    // Skip 2-byte frame count.
    // Skip 32-byte compressor name (length byte, then name, then 0-padding).
    // Skip 2-byte depth.
    // Skip 2 more reserved bytes (0xff)
    reader.skip(50);

    return {
      width: width,
      height: height,
    };
  }
Parses an visual sample entry box.
@param {!shaka.util.DataViewReader} reader
@return {!shaka.util.ParsedVisualSampleEntryBox}