Hi, i'm trying to parse a cctv hard drive. The hd has two partitions. The first one is a linux type and has a different folder for each date containing recordings. Inside these folders there are several .nvr files with 32 bytes records. So far i've been able to figure out the meaning of some of the fields of the 32 bytes records but i'm missing some of them.
The second partition is much bigger and holds kind of a stream of cctv recordings some sectors after the beginning of the partition. All the recordings start with a label form by two digits plus the string dcH264. The two digits vary depending on the camera producing the recording. Presumably the recordings start with a 72 bytes long header which includes the before mentioned label.
I can't play the recordings with any of the common players but after converting the recordings to avi format i can view some of the videos. Others are not viewable by any means. I've found no info about the length of the recordings. So far the only way i've found to determine the end of a recording is finding the beginning of the next one.
Any one can help me to understand a little better the system i'm describing?. Anyone has any codec i can try to view the video in a better way?. Any link explaining how all this work?
Many thanks in advance.
