How to make a video from a counter?

[ziptip]

I would like to make a video to show a counter like this:

2010 - 60
2011 - 69
2012 - 84
2013 - 92
2014 - 97

Each line should be shown alone on full screen and it should be shown for some 10 frames. Is there any program that can help with doing that? Maybe Avisynth?

[jagabo]

AviSynth can do that. Is there some algorithm for the count on the right? Or is it just a fixed list of numbers? How many number do you have? For a fixed list:

BlankClip(width=640, height=360, length=10, fps=10)

Subtitle("2010 - 60", size=150, x=30, y=100) \
++ Subtitle("2011 - 69", size=150, x=30, y=100) \
++ Subtitle("2012 - 84", size=150, x=30, y=100) \
++ Subtitle("2013 - 92", size=150, x=30, y=100) \
++ Subtitle("2014 - 97", size=150, x=30, y=100)

[ziptip]

Thanks a lot, it works very nice in Avisynth3+ !
It's just a fixed list of numbers. But if the numbers would be 1,2,4,8,16 etc (powers of two), can it be scripted?

I still have a few questions please:
- How can I change the background color from black to white?
- How can I put two lines instead of a single line? (tried "\n" and it doesn't work)
- And how can I write a title on the top for the entire duration of the video?

[jagabo]

If you can generate your numbers algorithmically you can use ScriptClip():

BlankClip(width=640, height=360, length=100, fps=1)
ScriptClip("""Subtitle(String(current_frame+2011) + " - " + String(current_frame*5+69), size=150, x=0, y=100)""")
ChangeFPS(10)

The left values starts at 2011 and increments by 1 every 10 frames. The right value starts at 69 and increases by 5 every 10 frames.

[ziptip]

Very nice, thanks!
How about the other questions? Background color and two lines of text

[poisondeathray]

You can specify color for the BlankClip using color= . In hex it would be $FFFFFF

eg
BlankClip(color=$FFFFFF)

For two lines of text you can add other subtitle lines , and positioning with x,y or align
http://avisynth.nl/index.php/Subtitle

[ziptip]

Thanks!
I see you do not define the duration for each text, the Subtitles have a duration of one second by default? What if you want the second text (2011 - 69) to last for 20 frames instead of 10 frames like other lines?

[jagabo]

I made my last post before seeing your post before it.

BlankClip(width=640, height=360, color=color_white, length=20, fps=1)
ScriptClip("""Subtitle(String(current_frame+2011),         size=100, x=320, y=250, align=2, text_color=color_cyan, halo_color=color_black)""")
ScriptClip("""Subtitle(String(int(pow(2, current_frame))), size=100, x=320, y=350, align=2, text_color=color_lightgreen, halo_color=color_black)""")
ChangeFPS(10)
Subtitle("Big Title", text_color=color_black, halo_color=color_gray, size= 150, x=320, align=8)

See docs:
http://avisynth.nl/index.php/Subtitle
http://avisynth.nl/index.php/ConditionalFilter#ScriptClip

[ziptip]

So you need ScriptClip only because you want to use current_frame variable, right?

[ziptip]

If I may ask, how do you make mkv videos from Avisynth? I am using Virtualdub and it can't save MKV files

[poisondeathray]

If I may ask, how do you make mkv videos from Avisynth? I am using Virtualdub and it can't save MKV files

vdub2 has mkv export support

[ziptip]

Thanks!

[jagabo]

So you need ScriptClip only because you want to use current_frame variable, right?

Yes. The runtime filters are the only way to get frame numbers.

If I may ask, how do you make mkv videos from Avisynth? I am using Virtualdub and it can't save MKV files

I used the x264 command line encoder. But yes, VirtualDub2 has built-in mkv export support. There's not much reason to use the older VirtualDub anymore.

[jagabo]

Here's a script using a single Subtitle line to output 2 lines of text:

BlankClip(width=640, height=360, color=color_white, length=20, fps=1)
Subtitle("Big Title", text_color=color_black, halo_color=color_gray, size= 150, x=320, align=8)
ScriptClip("""Subtitle(String(current_frame+2011) + "\n" + String(int(pow(2, current_frame))), size=100, x=320, y=260, lsp=-100, align=2, text_color=color_cyan, halo_color=color_blue)""")
ChangeFPS(10)

[Attachment 62388 - Click to enlarge]

[ziptip]

Thanks a lot, really great scripts!
I have another question but I will create a new thread for it. It's probably more useful for other people having the same question.