DVD Media Code

Simoncifer · 01-07-2005, 01:16 AM

Hi, does anyone know which program can read and show the DVD's media code? You know, kind of like the ATIP of the CDR, DVD has the code on the disk showing the manufacturer and info "RICOHJPNW11".

I mean, when I use K3b, the debug window shows that cdrecord display the ATIP code, but when I burn DVD using K3b or growisofs, they don't show the media code.

Thanks in advance.

MasterC · 01-07-2005, 04:21 AM

cdrecord dev=x,x,x -atip

You could also try:
cdrecord -dummy

Cool

Simoncifer · 01-08-2005, 01:40 AM

Thanks. Didn't know that cdrecord works for DVD also. But when I tried the command, it gives me information on CD-R, but for DVD-R or DVD+R, cdrecord would always said unknown dye:

Code:

Disk type:    unknown dye (reserved id code)
Manuf. index: -1
Manufacturer: unknown (not in table)

I guess it is trying to look up a table of the existing manufacturer and disk type. Is there some way to make cdrecord print the original code, like how people post the result from DVDInfoPro/DVDIdentifier (both Windows programs) on videohelp.com? Example:

Code:

08 02 00 00 01 0F 02 00 00 03 00 00 00 26 05 3F .............&.?
00 00 00 00 00 00 01 52 49 43 4F 48 4A 50 4E 52 .......RICOHJPNR
30 31 02 38 23 54 37 09 00 3C 67 00 AC 62 16 18 01.8#T7...g..b..
0B 0B 0A 0B 01 19 1B 0B 0B 0E 0F 01 00 00 00 00 ................

Thanks.

MasterC · 01-08-2005, 02:48 AM

Not off the top of my head, but you may be able to grab different info using different dvd-writing applications (growisofs, dvdrecord..).

Cool

Simoncifer · 01-16-2005, 04:52 AM

I am including the following information in case someone else is interested:

After many days/weeks of search, when I stopped looking for the answer, I stumbled upon it. The package dvd+rw-tools comes with a program called "dvd+rw-mediainfo", which print out some information about the DVD media code, although not in the raw format.

MasterC · 01-16-2005, 04:58 AM

Cool

but it's more info than cdrecord provides then? Was it enough?

Cool

ivanova · 01-22-2005, 03:16 AM

With some media dvd+rw-mediainfo returns the media code, but with some cheap media it doesn't. It would help if the raw text could be extracted somehow.

ivanova · 01-22-2005, 04:24 AM

Isn't there some device or file that you can use something like
'dd if=/dev/whatever of=tmp.txt bs=16 count=4' with?

ivanova · 01-22-2005, 02:29 PM

Looking at the source code for dvd+rw-mediainfo - If you pass more than one argument it will print all the raw data in hex.

I wrote a small script to make it more readable:

Code:

#!/usr/bin/python

import re, sys, codecs

data = sys.stdin.read()
rep_data = re.sub(r'( [0-9a-fA-F][0-9a-fA-F])\s*\n\s*([0-9a-fA-F][0-9a-fA-F] )',r'\1 \2',data)
lines = rep_data.split('\n')
for s in lines:
    r = re.compile('(.*:[^0-9a-fA-F]*)(([0-9a-fA-F][0-9a-fA-F]\s+)+)',re.DOTALL).search(s)
    if r:
        hex = re.sub(r'([0-9a-fA-F][0-9a-fA-F])\s*',r'\x\1',r.group(2))
	hex_dec = hex.rstrip().decode("string_escape")
	sys.stdout.write(r.group(1)+'\n\033[1;37m')
	for x in range((len(hex_dec)/16)+1):
	    sys.stdout.write(' %08x ' %(x*16))
	    for i in range(16):
		try: sys.stdout.write('%02X '%ord(hex_dec[(x*16)+i]))
		except: sys.stdout.write('   ')
	    for i in range(16):
		try:
		    if ord(hex_dec[(x*16)+i]) < 16:
			sys.stdout.write('.')
		    else:
			sys.stdout.write(hex_dec[(x*16)+i])
		except: sys.stdout.write(' ')
	    sys.stdout.write('\n')
	sys.stdout.write('\033[0m')
    else:
	sys.stdout.write(s+'\n')

Just pipe the output of dvd+rw-mediainfo into the script like so:
# dvd+rw-mediainfo /dev/hdb anotherargument | /path/to/decodescript

Simoncifer · 01-31-2005, 04:46 AM

Thanks. That will come in handy