All Questions
Tagged with imagemagick ffmpeg
23
questions
3
votes
1
answer
75
views
Is there an equivalent for ImageMagick’s “-shear” command in FFmpeg?
FWIW, I must run this on Windows platform.
I have a series of videos shot in identical conditions (mounted camera shooting trains), all exhibiting the same rolling shutter effect when train passes. ...
- 31
0
votes
0
answers
35
views
ffmpeg Is not compitable with minikube
I have one pod in minikube which is for video editing task and I am using the moviepy library. There is issue occurring Failed to read file duration and I debug the deep down code and found the cause ...
10
votes
4
answers
3k
views
How to resize an animated webp？
I want to be able to change the size of a dynamic webp.
Sample picture. I found this website to do just that.
So how can I implement something similar in my own program?
I tried using ImageMagick7 or ...
- 113
2
votes
0
answers
165
views
How can I use a widely-available cross-platform command line program to render a string containing emoji [closed]
I would like to use a widely-available command line program, the lighter-weight the better, to render a string containing emoji into a raster image. The rules are:
must work on a minimum of OS X and ...
- 121
0
votes
1
answer
3k
views
Convert PPM to PNG
I recently finished the raytracing tutorial "Ray Tracing in One Weekend", which outputs to PPM. I'm trying to convert to PNG to share my results, but all the solutions I've tried have thrown ...
- 3
1
vote
0
answers
1k
views
ffmpeg - fit multiple lines of text (having different fonts) with auto line wrap and auto font size?
Trying to keep this question to a minimum as in terms of info. Sorry if it's too long and thank you for reading it!
I'm trying to make these texts fit (they have different fonts and font sizes) to the ...
- 123
1
vote
1
answer
386
views
ImageMagick: Crop image into separate images of same area but at an interval along axis?
With either imagemagick or ffmpeg is there a way to crop a single image into separate images (put into an output folder) which are of same area (say 2000x500) but at say 20 pixel intervals down the y-...
- 13
3
votes
1
answer
2k
views
How to compress gif effectively to reduce size?
We use gifs for our blog extensively. We used to embed tenor nano gifs(90px height maintaining aspect ratio, used for GIF previews and shares on mobile) in it. Now we wanted to create our own gifs and ...
2
votes
2
answers
901
views
How to pad images with imagemagick?
I need to process a set of identically formatted images to get them to conform with my client's website format. I wanted to use ImageMagick's convert or mogrify instead of ffmpeg but I just cant make ...
- 41
0
votes
1
answer
1k
views
FFmpeg - blur image according to blur map [duplicate]
Is it possible with FFmpeg to blur a video according to blur map like this? Attached a sample.
Looking for a way to make specific parts of image blurred. Like ImageMagick's "compose blur", but for ...
- 111
4
votes
1
answer
5k
views
Best image compression for low bit depth, grayscale images?
I am trying to compress many (up to 2,500) small (300x200 px) grayscale images so the file size is as small as possible. Currently, my bit depth is 4 (16 shades of gray). Image source is surveillance ...
- 41
1
vote
1
answer
2k
views
IMagick delegate failed "ffmpeg" While Converting jpg stream to mp4
Here is the command I am using,
$ convert -antialias -delay 1/2 Images/*.jpg test.mp4
Output: convert: delegate failed `"ffmpeg" -v -1 -i "%F%%d.jpg" "%u.%m" 2> "%Z"' @ error/delegate.c/...
1
vote
2
answers
1k
views
FFmpeg / imagemagick Cut image top and bottom
I am creating an image like this:
ffmpeg -i chapter_Border.jpg -vf scale=220x176 chapter_Border.jpg -y';
how can I cut 15.5px from the bottom and 15.5px from the top of the image so that the image ...
- 229
0
votes
1
answer
5k
views
How can I convert an animation in PowerPoint into an animated GIF?
In Microsoft PowerPoint 2013, I have a single slide containing a fairly complex animation. I would like to convert this animation to an animated GIF file.
I have tried saving the animation directly ...
- 481
2
votes
0
answers
907
views
Generating a thumbnail reel from a video with image magik and/or ffmpeg
I read a post detailing how you can call ffmpeg from image magik. I want to learn how to:
Take a series of screenshots from a video,
store them in memory (dont' write all images to disk)
at the end ...
- 121