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
Related
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/
Hi i am using FFMpeg for splitting video(39MB) as 15 parts using below command and that's fine video is splitting and there is no damage.
But problem is actually my main file size is 39MB but after splitting this video then splitting video files size become very large compare to main file
When i count splitting files size it was 69MB
Can some one suggested me please.
-i "input.mp4" -ss 00:00:01 -t 00:00:03 -acodec copy -vcodec copy "output.mp4"
I try to concatenate two videos using ffmpeg I use that wrapper: wrapper.
According docs I use this commands :
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
After two command I got two files:
/storage/emulated/0/recorder/test1_convert.ts /storage/emulated/0/recorder/test2_convert.ts
But when I execute the third command I got failure: log message: concat:"/storage/emulated/0/recorder/test1_convert.ts|/storage/emulated/0/recorder/test2_convert.ts": No such file or directory
I suppose something wrong with syntax absolute path. This is full my third command:
Remove the double-quotes in the concat line.
I am not an Android user but quoting seems to be a typical problem on Android when using ffmpeg.
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 working on add watermark on video file in android with the use of ffmpeg jni what i have not found any solution for the same . i am using this command "ffmpeg -i alldone.mp4 -i cancel_bttn.png -filter_complex "overlay=main_w/2-overlay_w/2:main_h/2-overlay_h/2" record.mp4 " but this was not worked.