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ffmpeg animated gif is blotchy


ffmpeg animated gif is blotchy

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ffmpeg animated gif is blotchy
Tag : ffmpeg , By : nobodyzzz
Date : November 24 2020, 05:47 AM


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How to create an animated GIF using FFMPEG with an interval?


Tag : ffmpeg , By : Cowtung
Date : March 29 2020, 07:55 AM
wish helps you So I ended up just doing this by code having found this script (http://www.alberton.info/video_preview_as_animated_gif_with_ffmpeg_and_spl.html#.UxnU_IXYNyI) which made it easy where you can simply specify the position in the video by percentage on the frame to extract along with the interval between frames I can accomplish my problem above using the following.
// where ffmpeg is located, such as /usr/sbin/ffmpeg
$ffmpeg = '/usr/bin/ffmpeg';

// the input video file
$video = 'sample.avi';

// extract one frame at 10% of the length, one at 20% and so on
$frames = array('10%', '20%', '30%', '40%', '50%', '60%', '70%', '80%', '90%', '100%');

// set the delay between frames in the output GIF in ms (60 = 1 min)
$joiner = new Thumbnail_Joiner(60);

// loop through the extracted frames and add them to the joiner object specifying 
// the max width/height to make the thumb based on the dimensions of the video
foreach (new Thumbnail_Extractor($video, $frames, '150x150', $ffmpeg) as $key => $frame) {
    $joiner->add($frame);
}

$joiner->save('sample.gif');

ffmpeg drops time delay on last frame of animated GIF


Tag : ffmpeg , By : Thaweesak Suksuwan
Date : March 29 2020, 07:55 AM
this will help So I managed to modify this answer, which suggests using nullsrc with an overlay filter. nullsrc causes problems for transparent GIFs, so I used color instead:
ffmpeg -i animation.gif -filter_complex "color=c=white:s=340x240:d=0.300 [base]; [base][0:v] overlay" -c:v libx264 -b:v 2000k -y -pix_fmt yuv420p -f mp4 animation.mp4

FFMPEG: high quality animated gif?


Tag : development , By : August
Date : March 29 2020, 07:55 AM
I hope this helps . I've written a tool specifically for maximum quality:
https://gif.ski
ffmpeg -i video.mp4 frame%04d.png
gifski -o clip.gif frame*.png
ffmpeg -i video.mp4 -vf scale=400:240 frame%04d.png
ffmpeg -i video.mp4 -vf fps=12 frame%04d.png

How to overlay multiple animated images on a video using ffmpeg


Tag : video , By : Gilmar Souza Jr.
Date : March 29 2020, 07:55 AM
I hope this helps you . I'm trying to overlay multiple images on a video after I animate them using "rotate" filter. I'm using t parameter in the rotate filter to make the animation a bit arbitrary, so I had to flag the input video as loop (using a -loop flag). The problem is when I only perform one single overlay the result is what it is expected, but when the second overlay comes in the command, it ends suddenly and an empty output video is being generated. below is the command I'm using: , In this section,
-i template.mp4 -loop 1 -i Image_1.jpg -i Image_2.jpg
-i template.mp4 -loop 1 -i Image_1.jpg -loop 1 -i Image_2.jpg

ffmpeg overlay transparent animated gif over video and keep gif background transparency


Tag : ffmpeg , By : Stephen Judge
Date : March 29 2020, 07:55 AM
around this issue Ok, I'll answer my own question. The first part, not being able to achieve gif transparency, such a silly issue!! The gif I was using was not transparent and I didn't realized!! OMG, I thought, so this is the first thing to check whenever you have a transparency issue.
The second, looping the gif until the video ends, I wasn't able to do it with -ignore_loop 0 along with shortest=1 but what I did is -ignore_loop 0 and -frames:v 900 and that worked like a charm.
ffmpeg -y -i xxx.mp4 -ignore_loop 0 -i xxx.gif -filter_complex "[1:v]scale=1080:1920[ovrl];[0:v][ovrl]overlay=0:0" -frames:v 900 -codec:a copy -codec:v libx264 -max_muxing_queue_size 2048 video.mp4
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