I have been blanking the hard drive will all 0s before starting so there wouldn't be any extra bits turn on that the DVR didn't do. The hard drive format they are using is their own and doesn't have a partition table or boot sector or any computer general file system on it. The drive is just for storing data.
I haven't pulled together the information into one spot but several of my post have information that I have decoded.
The header information at sector 4:Post 6
The directory listing at sector 4 and 5:Post 11
I have figured out what most of the file are for. Only two of them change with drive size and that is MPG_SEGMPG_SEGM.DAT and AV001_0AV001_00.MPG.
The titles are stored in TI000_0TI000_00.IFO. If you go in there you will see the titles. I have figured out some of these records but haven't gotten very far with it.
This is my first stab at the TI000_0TI000_00.IFO file data.Post 55
I detail the two files that change size with the hard drive.Post 60
I'll try to download the data you posted mrmazda and see what I find. I have most of the file uses figured out but not the bits in them.
I think the TM001_0TM001_00.MAP and TM002_0TM002_00.MAP have time indexes on them. Most of the data looks like this because it just increments going down a list. I haven't been able to figure out what the first 16 bytes means at all. I think that is where the secret is for mapping from the directory listing in the TI000_0TI000_00.IFO through the TM001_0TM001_00.MAP to the AV001_0AV001_00.MPG that stores the video.
I have extracted video from the AV001_0AV001_00.MPGList of video found.What is in the title listing.
I just save off the sectors I want and name it .mpg and then it plays just fine.
This file system used on the DVR is based on a 512 byte sector. I can see why the advanced sector format drive is a problem.
I attached my to files for the director listing and the MAP file.
The MPG files starts at sector 2008029.
4.1 SLP start at sector number 2008029 and runs 16 Megabytes
5.1 EP start at sector number 2155485 and runs 24 Megabytes
5.2 LP start at sector number 2221021 and runs 24 Megabytes
11.1 SPP starts at sector number 2270173 and runs 24 Megabytes
MultiTitles TI000_0TI000_00.IFO.zip 0.822265625k . file
MultiTitles_TM001_0TM001_00.MAP.zip 453.8154296875k . file