This shot is currently unknown but I'm going going to take a wild guess and assume it's Sentai footage.
This shot is when footage from Gingaman Episode 48 begins.
Once you see the Rangers then that's back to new footage.
Here's new footage of the Rangers with their Galaxy Launchers

Grunchor in Sentai footage takes the blast from the Galaxy Launchers. Some of the Launchers' special effects are superimposed over the Sentai footage of Grunchor. Once it retreats, it then cuts to new footage of the Galaxy Launcher-armed Rangers.
These shots
is when the Sentai footage from Gingaman Episode 47 begins to play.
These shots
is when it goes back to new footage.
This shot is when it goes back to Sentai footage.
This shot of the Red Ranger fighting Swabbies is back to new footage.
This shot of the 5 Rangers fighting Swabbies from an aerial shot is back to Sentai footage.
This shot of the Rangers surrounding Deviot is when it goes back to new footage.
This is also new footage
Any up-close shots of the scanner is reused Sentai footage which includes all instances of the green dot appearing on the scanner's radar.
This shot of the Swabbies coming out of a truck is when the footage from Gingaman Episode 49 begins to play.
This shot of the Swabbies and Barbarax is when it goes back to new footage, this shot ia also new
These shots of Barbarax
is when it goes back to Sentai footage.
These shots
is also Sentai footage.
This shot of the Rangers which includes the Green Ranger holding his Trans Blaster is also Sentai footage.
These shots
is when it goes back to new footage.
Here's another new shot of the Launcher-armed Blue Ranger in the same shot of the Blue Ranger
This shot of the Yellow Ranger fighting Swabbies is when it goes back to Sentai footage.
These shots of Swabbies is when footage from Gingaman 48 begins to play.
These shots
is when it goes back to Sentai footage from Episode 49.
Once you see the bottom shots of the Magna Defender and the Red Ranger then that is when it's back to new footage.
This shot of Barbarax is also new footage.
This shot of Barbarax is when it goes back to Sentai footage.
These shots
is when it goes back to new footage.
This shot of the Blue Ranger and a Swabbie is when it goes back to Sentai footage.
These shots
  is when it goes back to new footage.
This shot of a Swabbie with a Ranger's white boots in the shot is when it goes back to Sentai footage.
These shots
is when it goes back to new footage.
Once it cuts back to Barbarax then that's back to Sentai footage.
This shot of Barbarax is back to new footage.
This shot of Barbarax which is a back shot of him is when it goes back to Sentai footage.
These shots of Barbarax
is when it goes back to new footage.
Once Barbarqax teleports out, it then cuts to an up-close Sentai shot of Grunchor's face.
After Mutiny detaches the Castle from his Titanisaur, it then cuts into Gingaman 50 footage of Grunchor.
Once Grunchor is destroyed, it then goes into a commercial. Once it returns from its commercial break, there's an exterior shot of Mutiny's Home Planet as shown here and then it cuts into more new footage on Mutiny's Home Planet due to all of the slaves on the Planet.
Grunchor Sentai footage mostly comes from Ginga Episodes 49 and 50
Grunchor Highway Tunnel footage comes from Ginga Episode 48
Deviot on Terra Venture with Grunchor Radar Sentai footage comes from Ginga Episode 47