void ff_hls_write_init_file(AVIOContext *out, char *filename,
int byterange_mode, int64_t size, int64_t pos);
int ff_hls_write_file_entry(AVIOContext *out, int insert_discont,
void ff_hls_write_init_file(AVIOContext *out, char *filename,
int byterange_mode, int64_t size, int64_t pos);
int ff_hls_write_file_entry(AVIOContext *out, int insert_discont,