Recovering DVR video footage

[DRIVE HOLES]

I am seeking help with reviewing files recovered from a ZOSI DVR HDD.
Most of the files are swf extension, I have done some looking and ended up here but I don't know enough what to do. I think I need to convert these files in some way in order to review any of the footage.
I have opened the files into MediaInfo and received this type of feedback:

General 
Complete name : D:\7617 dump\recup_dir.1\f109759640.swf 
Format : HEVC 
Format/Info : High Efficiency Video Coding 
File size : 3.00 GiB 
FileExtension_Invalid : hevc h265 265 

Video 
Format : HEVC 
Format/Info : High Efficiency Video Coding 
Format profile : Main@L4.1@Main 
Width : 960 pixels 
Height : 1 080 pixels 
Display aspect ratio : 0.889 
Color space : YUV 
Chroma subsampling : 4:2:0 
Bit depth : 8 bits 
Color range : Full 
Color primaries : BT.709 
Transfer characteristics : BT.709 
Matrix coefficients : BT.709

Appreciate any feedback

[cholla]

VLC player is supposed to be able to play .swf & maybe even convert them to another format.

You could try changing the extension to .flv & see if that makes playing them easier.

I tried to find a sample .swf but they were very small.

[DRIVE HOLES]

I have tried changing the extension to a few different video formats including flv with no luck and VLC player is not showing any video

[cholla]

VLC played the sample I found but Mediainfo showed it as a Shockwav with .mp3 audio.
It is not one I can upload on this forum.

The one you posted the MediaInfo on is too large for this forum.

If you have one 500MB or smaller & put in in a .zip file you can upload it here.

Also have you tried to play them with your browser ?

[Alwyn]

I may be off on a tangent but that looks like a bog-standard HEVC MPEG-4.

I'd try opening it in AVIDemux and change the output format to "MP4 Muxer" then save it. Leave everything else on default ie Video "Copy" and Audio "copy".

[ProWo]

Try Swivel
https://www.newgrounds.com/wiki/creator-resources/flash-resources/swivel

You could also use a flash decompiler and export the movies and sounds section
https://github.com/jindrapetrik/jpexs-decompiler/releases

[DRIVE HOLES]

Chrome just put the file in downloads rather than attempt to play it.
AVIdemuxer "could not find a demuxer for the file" - could not open the file (tried several of the files)
Swivel gave Error 2038 File I/O Error
JPEXS cannot load java io exception incorrect stream properties

These files were recovered from a DVR camera recorder's disk after the footage was deleted. They are not video files that have been exported. I used Photorec to retrieve the data, but I just don't know what should happen next for the files onhand to be reviewable.
Here is a small file from the folder.

[davexnet]

Drag the file into mkvtoolnix GUI and remultiplex to MKV.
Produces a working file

[DRIVE HOLES]

Drag the file into mkvtoolnix GUI and remultiplex to MKV.
Produces a working file

GANGSTER

Appreciate y'all!!

[Alwyn]

There go the coppers!