Time lapse video with motion blur Based on some of my videos I would like to make time-lapse videos with motion blur. My inspiration is this YouTube video:

Time-lapse with motion blur from video with Avidemux, AviSynth and VirtualDub   (starting at 6:42)

In the video the man uses VirtualDub with 

AviSource("path") 
Merge(selectEven(), SelectOdd()) 
Merge(selectEven(), SelectOdd()) 
Merge(selectEven(), SelectOdd()) 
Merge(selectEven(), SelectOdd()) 
AssumeFPS(30)


My source video has 60fps. Based on the tips given here I tried:

ffmpeg -i IN.MOV \
  -vf "tblend=average,framestep=2,tblend=average,framestep=2,setpts=0.25*PTS" \
  -r 60 -an OUT.MOV


Unfortunately my results are not similar, not so good as in the video. Difficult to say where the different is: the time-lapse effect is missing a bit, the motion blur is “different”? I am sorry, I cannot explain.

Maybe some of you have a tip how to switch die VirtualDub approach to FFmpeg regardless of my poor explanation?

Thanks in advance!

astefan
Perhaps something like this:

"split[v1][v2],[v1]select='eq(mod(n,2),0)'[v1],[v2]select='eq(mod(n,2),1)'[v2],[v1][v2]mix,split[v1][v2],[v1]select='eq(mod(n,2),0)'[v1],[v2]select='eq(mod(n,2),1)'[v2],[v1][v2]mix,split[v1][v2],[v1]select='eq(mod(n,2),0)'[v1],[v2]select='eq(mod(n,2),1)'[v2],[v1][v2]mix,split[v1][v2],[v1]select='eq(mod(n,2),0)'[v1],[v2]select='eq(mod(n,2),1)'[v2],[v1][v2]mix"