Playing video from ...
 
Notifications
Clear all

Playing video from DVR

4 Posts
4 Users
0 Likes
615 Views
(@sansarmaa)
Posts: 22
Eminent Member
Topic starter
 

i failed to remove admin password for JUAN JA-R5104H DVR, so i just plug the HDD to my computer, and copied all video files. files are named file0000.dat divided into 64MB pieces. when i play the video on VLC /with demuxer h264 config/ it gives 4 camera feed about 1 second long from each other, so basically i cant tell whats what because camera's switching too fast. anyway to make it more watchable? or divide it into 4 different file, or screen?

 
Posted : 26/05/2017 8:18 am
jaclaz
(@jaclaz)
Posts: 5133
Illustrious Member
 

i failed to remove admin password for JUAN JA-R5104H DVR, so i just plug the HDD to my computer, and copied all video files. files are named file0000.dat divided into 64MB pieces. when i play the video on VLC /with demuxer h264 config/ it gives 4 camera feed about 1 second long from each other, so basically i cant tell whats what because camera's switching too fast. anyway to make it more watchable? or divide it into 4 different file, or screen?

You can use ffmpeg or vlc to export a single frame every n frames and then make a new video from the (huge number) of extracted frames.

Whether this will be easy or complex may depend on the exact frame rate of the original video, see
https://superuser.com/questions/391257/extracting-one-of-every-10-frames-in-a-video-using-vlc-or-ffmpeg
Or maybe (making "three passes") use the odd and even frames conversion?
Using Avisynth enabled ffmpeg, see
https://superuser.com/questions/573747/drop-every-even-or-odd-frames-using-ffmpeg
http//avisynth.nl/index.php/Select

But I would first try with something simpler *like*
ffmpeg -i input -vf framestep=2 output

jaclaz

 
Posted : 26/05/2017 4:05 pm
(@bntrotter)
Posts: 63
Trusted Member
 

Ocean Systems dTective.

 
Posted : 06/06/2017 12:17 am
(@badgerau)
Posts: 96
Trusted Member
 

Amped FIVE or FFMPEG

 
Posted : 07/06/2017 12:34 am
Share: