B_WRITABLE
outFileFormat->capabilities |= media_file_format::B_WRITABLE;
media_file_format::B_WRITABLE | media_file_format::B_READABLE
media_file_format::B_WRITABLE | media_file_format::B_READABLE
media_file_format::B_WRITABLE | media_file_format::B_READABLE
media_file_format::B_WRITABLE | media_file_format::B_READABLE
media_file_format::B_WRITABLE
media_file_format::B_WRITABLE | media_file_format::B_READABLE
media_file_format::B_WRITABLE | media_file_format::B_READABLE
if ((mfi.capabilities & media_file_format::B_WRITABLE) == 0)