- AV_WB24(filtered_data, 1); // startcode
- memcpy(filtered_data + 3, nal->raw_data, nal->raw_size);
- filtered_data += 3 + nal->raw_size;
+ bytestream2_put_be24u(&pb_filtered_data, 1); // startcode
+ bytestream2_put_bufferu(&pb_filtered_data, nal->raw_data, nal->raw_size);