slowmovingtextclip.py

import moviepy.editor as mpy
from vectortween.Mapping import Mapping

basename = 'video.mp4'
inputfile = basename + ".mp4"
outputfile = basename + ".new.mp4"
video_file = mpy.VideoFileClip(inputfile)
duration = video_file.duration # duration
video_width, video_height = video_file.size
textclip = mpy.TextClip("www.YouTube.com",fontsize=30,color="red")
textclip_width, textclip_height = textclip.size
extra_margin = 10
desired_final_x = video_width - textclip_width - extra_margin
desired_final_y = 0

def position(t):
    return Mapping.linlin(t, 0, duration, 0, desired_final_x), desired_final_y

add_text = textclip.set_position(position).set_duration(video_file.duration)

final = mpy.CompositeVideoClip([video_file,add_text])

final.write_videofile(outputfile)

camala or pyvectortween, In which module can be set the random position (every custom second) of overlay text on video?

I tried FFmpeg by this instruction: https://ffmpeg.org/ffmpeg-filters.html#Examples-71

• Show the text at a random position, switching to a new position every 30 seconds:
  drawtext="fontsize=30:fontfile=FreeSerif.ttf:text='hello world':x=if(eq(mod(t\,30)\,0)\,rand(0\,(w-text_w))\,x):y=if(eq(mod(t\,30)\,0)\,rand(0\,(h-text_h))\,y)"

My custom input, every 10 seconds: Working
ffmpeg -i video_input.mp4 -vf drawtext="fontfile='C\:/Users/BRIGHT/AppData/Local/Microsoft/WINDOWS/fonts/RacingSansOne-Regular.ttf':text='YouTube.com':fontsize=h/15:fontcolor=white:alpha=0.2:bordercolor=black:borderw=1:x=if(eq(mod(t\,10)\,0)\,rand(0\,(w-text_w))\,x):y=if(eq(mod(t\,10)\,0)\,rand(0\,(h-text_h))\,y)" -codec:a copy video_output.mp4

FFmpeg is too much complicated. Does have any option to create the same task by moviepy