Automatic Delayed Replay, How?

[AverageBrah]

Is there any software to add a delay before the start of replay?

I want to set up a camera hooked up to a monitor in my gym so I can record and automatically replay a video taken 10-20 seconds after being recorded. This would be good for technique analysis.

Can this be done in VLC player? Or some other fancy software?

Thanks!:thumbsup:

 

[Paladin3]

I think you need to google "tethered video" or something similar.

There are many tools, Adobe Lightroom is one example, that will let you shoot still photos while tethered to a computer and automatically add the images to a running slideshow. I'm not sure what's software is available that will do the same with video, but it must exist.

VLC player is a nice viewer, but doesn't have that capability built in. Maybe a script could be written to monitor the folder you dump the video files to and automatically run them in VLC after the desired 10-20 sec delay, but that would take skills I don't have.

You will still need the tethering software to get the clips automatically from the camera to the computer. You will also need a live camera operator pushing the play/stop to create the individual video clips.

Maybe a mirror will work instead?

 

[Gooberlx2]

Curious about this. Scripting vlc could work. Here's one I put together using a screen capture (because I don't have a webcam). I imagine modifying the script for a camera would be relatively easy.

REM be sure "one instance setting is ticked in VLC preferences
@echo off
:loop
	REM format datetime for video file
	for /f "tokens=2-4 delims=/ " %%a in ('echo %date%') do (set mydate=%%c-%%a-%%b)
	for /f "tokens=1-3 delims=/:" %%a in ('echo %time%') do (set mytime=%%a%%b%%c)
	set videofile=c:\temp\%mydate%_%mytime%.mp4
	
	REM record 60s of video and dump to location
	echo will record to: %videofile%
	start "vlcrecord" "c:\vlc\vlc.exe" screen:// :screen-fps=25 :screen-width=1280 :screen-height=720 :screen-top=100 :screen-left=200 :screen-caching=100 :sout=#transcode{venc=x264{bframes=0,nocabac,ref=1,nf,level=13,crf=24,partitions=none},vcodec=h264,fps=25,vb=3000,width=1280,height=720,acodec=none}:duplicate{dst=std{mux=mp4,access=file,dst=%videofile%}}
	
	echo waiting to kill (60s)
	ping 192.0.2.2 -n 1 -w 60000 > nul
	echo killing recording
	start "vlckill" "c:\vlc\vlc.exe" vlc://quit
	
	REM pause 20s to approach monitor
	ping 192.0.2.2 -n 1 -w 20000 > nul
	
	REM play newly recorded video
	echo playing video
	start "vlcplay" "c:\vlc\vlc.exe" "%videofile%"
	REM kill after 61 seconds (--play-and-exit switch isn't working for me)
	ping 192.0.2.2 -n 1 -w 61000 > nul
	start "vlckill" "c:\vlc\vlc.exe" vlc://quit
	
	REM pause for 20 seconds so you can reset
	echo pausing for 20 seconds
	ping 192.0.2.2 -n 1 -w 20000 > nul
	
	goto loop

 

[Paladin3]

I've always been fascinated by "scripting" to automatically do what a human operator would otherwise have to be present to do, though I have no idea how.

What language is that written in? I'm reading the Wikipedia entry on scripting language and it's very interesting.

 

[Gooberlx2]

What language is that written in? I'm reading the Wikipedia entry on scripting language and it's very interesting.

Just a windows batch script. I'm sure more experienced/clever people than I could do a much better job.