Log in

View Full Version : Util to guess encoder used

selyb
11th April 2005, 04:30
is there a program that can show me what encoder was used to encode mpeg2 video(namely dvd video)?
selyb
13th April 2005, 06:21
does that mean no?
Abond
13th April 2005, 08:46
Generally, no.
In fact any prog that can analyse mpeg files can give info about the encoder used, ONLY IF the encoder leave specific info or sign in the encoded material (AFAIK TMPG does this).
selyb
13th April 2005, 17:31
thx :)
liquid217
13th April 2005, 18:26
you might have a look at restream, which can read the user data portion of an mpeg2 stream. Tmpgenc does add text to this, but thats the only encode i can think of that does.

http://shh.sysh.de/
unskinnyboy
13th April 2005, 18:42
I just checked GSpot and Restream (Thanks liquid217 for the link) against 2 VOBs, one from an original DVD and the other created using DVDReBuilder+CCE. In both cases, none of these tools gave any indication as to what was the encoder used (at least to my eyes).

So just in case you were planning to download a VOB sample from a P2P network and check whether it was done with DVDShrink or DVDRebuilder, you are out of luck.:D
video
13th April 2005, 19:12
there is an anciliary (user) data chunk in the sequence header. some tool fill that in, some not. If it's filled in, then it can be displayed otherwise not. Not so much trustable, because any software what is processing the stream may change it. a lots of dvd auth software replaces this chunk text with its own...
mpucoder
13th April 2005, 19:37
Originally posted by video
lots of dvd auth software replaces this chunk text with its own... And some remove all user data except CC to reduce the bitrate.
selyb
14th April 2005, 15:40
:( :(
i have backed up most of my collection and some of the first ones i did were with dvdshrink and i was hoping to be able to tell which ones i did with it so i could redo then with dvdrb :(
oh well, thanx much everyone
nwg
14th April 2005, 15:57
Originally posted by selyb
:( :(
i have backed up most of my collection and some of the first ones i did were with dvdshrink and i was hoping to be able to tell which ones i did with it so i could redo then with dvdrb :(
oh well, thanx much everyone

Load the DVD into DVDInfoPro. The information displayed for the DVD will tell you if DVD Shrink made it.
selyb
15th April 2005, 07:42
Originally posted by nwg
Load the DVD into DVDInfoPro. The information displayed for the DVD will tell you if DVD Shrink made it. if you are talking about the provider id then that wont help me
i changed some and omitted others
nwg
15th April 2005, 12:06
Originally posted by selyb
if you are talking about the provider id then that wont help me
i changed some and omitted others

I just checked a disc. It is the Implementation ID. It comes up as DVDShrink.