Thumbnail Maker
Description:	Arexx script for ArtEffect, generates thumbnails
Download:	thumbnailmaker.lha       (TIPS: Use the right click menu if your browser takes you back here all the time)
Size:	16kb
Version:	1.01
Date:	26 Apr 2024
Author:	David Woolley
Submitter:	David Woolley
Requirements:	ArtEffect 4, Ffmpeg, rexxsupport.library, verdana.font
Category:	video/misc
Replaces:	video/misc/thumbnailmaker.lha
License:	Public domain
Distribute:	yes
Min OS Version:	4.1
FileID:	12929
Snapshots:
Comments:	0
Snapshots:	3
Videos:	0
Downloads:	80  (Current version)
	239  (Accumulated)
Votes:	0 (0/0)  (30 days/7 days)

Thumbnail Maker is an Arexx script for ArtEffect 4 from Haage & Partner. 
It uses ffmpeg to generate a series of frames from a selected video, and 
paste them onto a canvas to create a sequence of thumbnails. Data about 
the video is printed at the top, along with a user-definable string.

I wrote this script for my own use and have decided to share it with
other users. Feel free to modify the script for your own devices. 

This is version 1.04. 
*New feature*: 
You can optionally burn the timecode into each frame. Thanks to Mick JT 
for helping me figure out the syntax of this command. Time is in the format 
hh:mm:ss and will appear in the top left hand corner. You can select either 
white or black text. Note that the non-altivec version of ffmpeg 6.01 has a 
bug and won't work with this feature. If you have this version installed you 
won't see the option to apply timecode.
I recommend updating to the latest version of ffmpeg.
*Bug fix*:
The default file extensions have been overhauled, so by default more
video file types are displayed for selection.
*Improvement*: 
ffmpeg now does the scaling instead of Art Effect. This makes 
assembling the final image much faster.
*Improvement*: 
The script now looks for ffmpeg in appdir not c, so you can keep your 
ffmpeg executable anywhere.
*Improvement*: 
A few minor code polishes...

Requirements
*	ArtEffect Version 4. If you have an assign "ArtEffect:" then it 
	remembers the last location a video is saved from and stores this 
	in ArtEffects Settings directory.
*	FFMpeg. Tested with versions 4.0.2, 4.2.1, 6.1 and 6.1.1 for 
	AmigaOS 4.x. The script checks for ffmpeg in appdir and will 
	quit if it isn't present.
*	The text printed on the canvas defaults to Verdana 18. The script 
	checks for this in FONTS: and quits if it isn't present. Verdana is 
	part of OS4 system fonts so should be present by default.
	See also BUGS below.
*	Depending upon the size of your video, you may require alot of RAM, 
	hard disk space, and CPU cycles.
*	rexxsupport.library. The script checks for the presence of this and
	quits if it isn't present. It should be part of the standard OS4 
	installation.
*	MD5Sum is used to determine if the non-altivec version of ffmpeg
	v 6.1 is installed. This should be part of the OS 4 standard install.
*	Appdir is used to find the ffmpeg executable. This should be part
	of the standard OS4 install.

As ArtEffect is 68k software, and there exists a 68k version of Ffmpeg, this 
script *might* work on AmigaOS 3.x, but I have only tested it on my X5000.
The last two requirements above probably preclude the script running on 
OS3.x. If you are using OS 3.x, I recommend you keep using version 1.01
and forego the timecode feature.

Disclaimer
This reads and writes data from a source, and as such
an interruption may cause data loss. Use at your own risk.