When I want to create an animated gif from a photo set, ffmpeg merges similar consecutive frames into one frame. How can I prevent this? My ffmpeg command is as follows:
ffmpeg -y -i frame_%03d.png -lavfi "palettegen" outputFilePath
ffmpeg -framerate 1 -y -f image2 -i frame_%03d.png -i paletteFilePath -lavfi "paletteuse" outputFilePath
please guide me. Thank you
This is a one-pass solution to create an animated GIF:
ffmpeg -i "frame_%3d.png" -framerate 12 -filter_complex "fps=12,split=2[palette_in][gif];[palette_in]palettegen[palette_out];[gif]fifo[gif_fifo]; [gif_fifo][palette_out]paletteuse" -y output.gif
Extended explanation here:
https://quinbenson.wordpress.com/2019/07/15/ffmpeg-png-to-animated-gif/
Related
I m using below ffmpeg command to generate video(slideshow) from list of images,but the issue is that its only displaying first image.
ffmpeg -loop 1 -t 3 -i image1.jpg -i image2.jpg -i image3.jpg -filter_complex [v][v1][v2] concat=n=3:v=1,format=yuv422p[a] -map [a] out.mp4
Any help will be appreciate.
Thanks.
Finally after lot of practices got the solution and better ffmpeg command then above command.
ffmpeg -f concat -safe 0 -i img-list.txt -f concat -safe 0 -i audio-list.txt -c:a aac -pix_fmt yuv420p -crf 23 -r 24 -shortest -y -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" video.mp4
in above command input.txt will contains path of image files seperated with new line.
input.txt
file '*/image1.jpg'
file '*/image2.jpg'
file '*/image3.jpg'
I have used this command to concate multiple images with transition effects to create video.
"-y -f concat -safe 0 -i <txt file path> -filter_complex [0:0][1:0]concat=n=2:v=0:a=1[out] -map [v] -shortest -vf fps=40 -pix_fmt yuv420p <video path>"
But it is showing error :
Stream specifier ':0' in filtergraph description [0:0][1:0]concat=n=2:v=0:a=1[out] matches no streams.
Here is my txt file
file '/storage/emulated/0/image1.jpg'
duration 5
file '/storage/emulated/0/image2.jpg'
duration 5
file '/storage/emulated/0/image3.jpg'
However if i am not applying any filter effect, it is successfully creating a video.
Following command creates the video at a frame rate of 1 frame for 5 seconds.
ffmpeg -y -r 1/5 -i image1.jpg -i image2.jpg -i image3.jpg -filter_complex 'concat=n=3:v=1:a=0 [out]' -map [out] -c:v libx264 output.mp4
I am using ffmpeg in android for create video from multiple images, it has done and now i want to add more images in generated video. i found many times but not getting any proper command in ffmpeg for that.please help
Try using this command,
1.
ffmpeg -y -framerate 1/2 -start_number 1 -i img/%1d.jpg -vf scale=720:756 -c:v libx264 -r 10 -pix_fmt yuv420p videos.mp4
If you want to add watermark image to your generated video, you can use this one:
2.
ffmpeg -i videos.mp4 -i watermark_img.jpg -filter_complex "overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2" -codec:a copy watermark_videos.mp4
In order to create video from random images, You have to keep all images in dir called img, as you can see in first command, and just name all images in the dir, like: 1.jpg,2.jpg...N.jpg,etc , you have to name all the images in sequential number format, which is required by the ffmpeg command as you can see in the first command -i img/%1d.jpg , here -start_number 1 indicates it should start from image preceding with 1 number, and go on with all the images stored in img/ dir, sequentially.
In order to understand the ffmeg command please read all of it's CLI parameters:
man ffmpeg
OR
ffmpeg --help
I want use images to generate a video, i found a ffmpeg command option name '-f concat' ,anybody can give me more infomations?
i try like this:
ffmpeg -r 1/5 -s 480*480 -f concat -safe 0 -i test/b.txt -c:v libx264 test/test.mp4
but an error appear：
Option video_size not found.
I am cutting out segments from a long mp4 file and then rejoining parts of them. However, since FFMPEG apparently keeps the same MOOV atom for the trimmed files as the original, it looks to FFMPEG that the trimmed videos are all identical since they all have the same MOOV atom, and therefore only uses the first segment when trying to join the videos. Is there a way around this? Unfortunately since FFMPEG is embedded in an Android app, I can only use version 0.11.
Edit:
This is a sample of the processes:
ffmpeg -i /sdcard/path/movie.mp4 -ss 00:00:06.000, -t 00:00:05.270, -c:a aac -c:v libx264 /sdcard/path/file1.mp4
ffmpeg -i /sdcard/path/movie.mp4 -ss 00:00:12.000, -t 00:00:04.370, -c:a aac -c:v libx264 /sdcard/path/file2.mp4
ffmpeg -i /sdcard/path/movie.mp4 -ss 00:00:23.000, -t 00:00:03.133, -c:a aac -c:v libx264 /sdcard/path/file3.mp4
ffmpeg -i "concat:/sdcard/path/file1.mp4|/sdcard/path/file2.mp4|/sdcard/path/file3.mp4" -c:a aac -c:v libx264 /sdcard/path/output.mp4
I've also tried using the copy codec option but that hasn't helped.
Can you try something like:
ffmpeg -i input1.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
ffmpeg -i input2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts
ffmpeg -i "concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc output.mp4
I hope this works with ffmpeg version 0.11. We need to make sure you can concat before applying the cut of file.
Also can you check the intermediary file*.mp4 works well? Can you try to put your video files on the same folder as ffmpeg I am not sure how the concat protocol reacts to /sdcard/path/file1.mp4|/sdcard/path/file2.mp4?