static void json_print_chapter_header(WriterContext *wctx, const char *chapter)

{

    JSONContext *json = wctx->priv;

    char *chapter_esc;



    if (wctx->nb_chapter)

        printf(",");

    json->multiple_entries = !strcmp(chapter, "packets") || !strcmp(chapter, "streams");

    chapter_esc = json_escape_str(chapter);

    printf("\n  \"%s\":%s", chapter_esc ? chapter_esc : "",

           json->multiple_entries ? " [" : " ");

    av_free(chapter_esc);

}
