How to extract an elementary video stream from Avigilon .ave container?

I would like to figure out how to extract a H.264 video stream from an Avigilon .ave custom container. Unlike with here where they are using ffmpeg to extract the elementary video stream, when I try to do it with ffmpeg it responds: moov atom not found error which probably means that the container/format has put the moov atom in location ffmpeg can't find it.

It is a non-standard container (Avigilon). I do not want to do this through their own media player.

I'm not sure how/where to go from here. I've used MediaInfo and managed to extract some information about the file, but I don't know how to use that information to acquire the elementary stream.

In the end of the day, I want to get the H.264 file from the container and use it directly. Any suggestions on how to approach this would be helpful.

MediaInfo for the file:

General
Count                                    : 331
Count of stream of this kind             : 1
Kind of stream                           : General
Kind of stream                           : General
Stream identifier                        : 0
Complete name                            : /folder
Folder name                              : /folder
File name extension                      : file.ave
File name                                : filename
File extension                           : ave
Format                                   : ave2
Format                                   : ave2
Commercial name                          : ave2
Codec ID                                 : ave2
Codec ID                                 : ave2 (0x060E0212/0x0000BE6C)
CodecID_Compatible                       : 0x060E0212/0x0000BE6C
File size                                : 6330774432
File size                                : 5.90 GiB
File size                                : 6 GiB
File size                                : 5.9 GiB
File size                                : 5.90 GiB
File size                                : 5.896 GiB
Stream size                              : 6330774432
Stream size                              : 5.90 GiB (100%)
Stream size                              : 6 GiB
Stream size                              : 5.9 GiB
Stream size                              : 5.90 GiB
Stream size                              : 5.896 GiB
Stream size                              : 5.90 GiB (100%)
Proportion of this stream                : 1.00000
File last modification date              : UTC 2019-10-09 08:30:27
File last modification date (local)      : 2019-10-09 14:00:27

And an example of some log around it:

000000000 avfs (24 bytes)
000000000  Header (8 bytes)
000000000   Size:                                 24 (0x00000018)
000000004   Name:                                 avfs
000000008  Unknown:                               (16 bytes)
000000018 File Type (24 bytes)
000000018  Header (8 bytes)
000000018   Size:                                 24 (0x00000018)
00000001C   Name:                                 ftyp
000000020  MajorBrand:                            ave2
000000024  MajorBrandVersion:                     0 (0x00000000)
000000028  CompatibleBrand:
00000002C  CompatibleBrand:
000000030 ----------------------------
000000030 ---   MPEG-4, accepted   ---
000000030 ----------------------------
000000030 expc (524 bytes)
000000030  Header (8 bytes)
000000030   Size:                                 524 (0x0000020C)
000000034   Name:                                 expc
000000038  Unknown:                               (516 bytes)
00000023C datp (2317649 bytes)
00000023C  Header (8 bytes)
00000023C   Size:                                 2317649 (0x00235D51)
000000240   Name:                                 datp
000000244  Unknown:                               (2317641 bytes)
000235F8D rcfc (6794 bytes)
000235F8D  Header (8 bytes)
000235F8D   Size:                                 6794 (0x00001A8A)
000235F91   Name:                                 rcfc
000235F95  Unknown:                               (6786 bytes)