I am using Windows 10 with "ffmpeg version 4.4-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers built with gcc 10.2.0 (Rev6, Built by MSYS2 project)".

I am writing a command-line script that will create a basic slideshow MP4 video from multiple folders of dozens or hundreds of JPG and/or PNG images. The images are sourced from either digital cameras/smartphones or scanned photos (typically 600 dpi).

So far, I have been successful with this command for a small test group of 9 JPG files:

ffmpeg -framerate 1/2 -i test%%1d.jpg -filter_complex "scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:-1:-1:color=black,format=yuv420p" -r 30 -movflags +faststart output-1280-720.mp4

This command-line works perfectly and renders my JPGs in the correct orientation and correct aspect ratio.

Only one issue remains.... my input file selection requires a more flexible "*.JPG" wildcard syntax because I have tens of thousands of images (52K images in over 1900 folders) that have a wide variety of naming conventions that don't match a simple 1, 2, or 3 digit numeric sequence. And in some cases, the images are just randomly named and simply sorted alphabetically by their file names.

I have tried two unsuccessful options to provide “*.jpg” wildcard functionality…

Option #1 (text file of filenames):

ffmpeg -framerate 1/2 -f concat -safe 0 -i "Test-ffmpeg.Txt" -filter_complex "scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:-1:-1:color=black,format=yuv420p" -r 30 -movflags +faststart output.mp4

I tried creating an input file list using this syntax: -f concat -safe 0 -i "Test-ffmpeg.Txt" but when I run the command, I get a “Option framerate not found” fatal error

Can I use an input text file with this particular set of encoding and processing options?

Option #2 (Pattern_Type glob):

ffmpeg -framerate 1/2 -pattern_type glob -i "*.jpg" -filter_complex "scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:-1:-1:color=black,format=yuv420p" -r 30 -movflags +faststart output-1280-720.mp4

If I try using -pattern_type glob -i "*.jpg" I receive this fatal error message "Pattern type 'glob' was selected but globbing is not supported by this libavformat build. *.jpg: Function not implemented’

Is there a FFmpeg version (or license) that provides glob support on a Windows platform?. I'm certainly willing to pay for it. Or, in the absence of glob wildcard support, if there a way I can accomplish the “*.jpg” wildcard syntax?

Thank you,


  • Possible alternative could be using a script or tool to rename your files in a way that *.jpg works.
    – kicken
    Jul 10, 2021 at 2:42

1 Answer 1


With concat demuxer method, use setpts filter instead of -framerate to control timing.


ffmpeg -reinit_filter 0 -f concat -safe 0 -i "Test-ffmpeg.Txt" -vf "scale=1280:720:force_original_aspect_ratio=decrease:eval=frame,pad=1280:720:-1:-1:color=black:eval=frame,settb=AVTB,setpts=2*N/TB,format=yuv420p" -r 30 -movflags +faststart output.mp4

  • Hi, @Gyan, thanks for the suggestion... when I run the command, I get a brief 1-image output file instead of the expected 14 images with a 2 second delay between images. Here is the command: ffmpeg -f concat -safe 0 -i "Test-ffmpeg.Txt" -vf "setpts=2*N/TB,scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:-1:-1:color=black,format=yuv420p" -r 30 -movflags +faststart output-setpts.mp4
    – Sailor Guy
    Jul 10, 2021 at 15:11
  • Here is the "Test-ffmpeg.txt" input file: file 'Test1.jpg' file 'Test2.jpg' file 'Test3.jpg' file 'Test4.jpg' file 'Test5.jpg' file 'Test6.jpg' file 'Test7.jpg' file 'Test8.jpg' file 'Test9.jpg' file 'Test10.jpg' file 'Test11.jpg' file 'Test12.jpg' file 'Test13.jpg' file 'Test14.jpg'
    – Sailor Guy
    Jul 10, 2021 at 15:12
  • Can't reproduce here. Are all of your images the same resolution and format?
    – Gyan
    Jul 10, 2021 at 17:35
  • Hi, @Gyan, the images are all JPG but some of them have different resolutions because they were sourced from different digital cameras and/or digitally scanned. What’s interesting is the first option works fine for the same 9 images: fmpeg -framerate 1/2 -f concat -safe 0 -i "Test-ffmpeg.Txt" -filter_complex "scale..." but the second option with the same 9 images results in only 1 brief image: ffmpeg -f concat -safe 0 -i "Test-ffmpeg.Txt" -vf "setpts=2*N/TB,scale..." I can provide the 9 images in a Dropbox folder if you would like to see them. Any help would be appreciated!
    – Sailor Guy
    Jul 10, 2021 at 20:20
  • Try modified command.
    – Gyan
    Jul 11, 2021 at 4:00

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.