Chapter titles can be encoded in UTF-16

[DesweR]

src/mp4file.cpp

MP4ChapterType MP4File::GetChapters(MP4Chapter_t ** chapterList, uint32_t * chapterCount, MP4ChapterType fromChapterType)
{
...
    const char * title = (const char *)&(sample[2]);
    // collection of characters can be encoded in UTF-16

    int titleLen = min((uint32_t)((sample[0] << 8) | sample[1]), (uint32_t)MP4V2_CHAPTER_TITLE_MAX);

    // either byte in title may be zero
    strncpy(chapters[i].title, title, titleLen);

    chapters[i].title[titleLen] = 0;
...
}