I need to add an image at the end of the video for 1 second.
There are 2 images image1 is for square type videos and image2 is for vertical (full screen videos).
I'm using php on my server. i can create a separate videos each images and when i try to add it to the videos it fails. i tried many commands and everything failed.
used this command to convert image to video
exec('ffmpeg -loop 1 -i image1.png -c:v libx264 -t 5 -pix_fmt yuv420p -vf scale=320:240 out.mp4');
even tried this solution FFMPEG add image at the end of a video for it does not create any output.
anybody help me with this condition
my ffmpeg version 3.4.6-0ubuntu0.18.04.1
Related
I've got an MKV that I would like to replace the first 5 seconds with a static png image that fades in/out from black. How can I accomplish this with just ffmpeg?
Easy method is to overlay the image:
ffmpeg -i input.mkv -loop 1 -t 5 -i image.png -filter_complex "[1]fade=type=in:duration=1,fade=type=out:duration=1:start_time=4[fg];[0]drawbox=t=fill:enable='lte(t,5)'[bg];[bg][fg]overlay=eof_action=pass:x=(W-w)/2:y=(H-h)/2" -c:a copy output.mkv
I added the drawbox filter to make a black background because I didn't know the size of your image.
See FFmpeg Filter Documentation.
I have bunch of images that i have to convert to slideshow with curtain effect. currently i am running this command that convert images to video.
ffmpeg -r 1/5 -i img%d.png -c:v libx264 -vf "fps=25,format=yuv420p" video.mp4
But how to achieve this kind of effect with ffmpeg. Image link Required result
I searched online but not found any solution. I have clue of alpha mask but no idea how to use it for such result.
ffmpeg -y -i img1.png -i img2.png -i img3.png -filter_complex "[0:v]zoompan=z='zoom+0.0000':d=50[img1];[1:v]zoompan=z='if(lte(zoom,1.0),1.1,max(1.001,zoom-0.0030))':d=200[img2];[img1][img2]blend=all_expr='if(lte((H/2-sqrt((Y-H/2)*(Y-H/2)))+N*8*SH,H/2),A,B)'[img1img2];[1:v]zoompan=z='zoom+0.0000':d=50[img2];[2:v]zoompan=z='if(lte(zoom,1.0),1.1,max(1.001,zoom-0.0030))':d=200[img3];[img2][img3]blend=all_expr='if(lte((H/2-sqrt((Y-H/2)*(Y-H/2)))+N*8*SH,H/2),A,B)'[img2img3];[img1img2][img2img3]concat=n=2[final]" -map "[final]" out.mp4
This ffmpeg command will generate door open (curtain) effect.
Here is logic.
Suppose you have there images you want to create this effect. First create blend effect of first img1 and img2. Then create another blend effect with img2 and img3. then merge these 2 generated videos.
Is there some way to use libav/avconv to duplicate the effect of the tile filter in FFMPEG?
I'm trying to create a strip of images from left to right with one image for every ten seconds of video input.
My plan is to first generate the images and then create the image strip. Preferably I want to use libav over ffmpeg. So far I have created this:
avconv -i video.mp4 -vf scale=320:-1,fps=1/10 -q:v 6 img%03d.jpg
which creates the images. But then I only know how create the image with ffmpeg using:
ffmpeg -i img%03d.jpg -filter_complex tile=6x1 output.jpg
So if anyone has any tips on how to rewrite the just the second or both commands to use avconv I welcome any advise :)
As libav/avconv did not have any filters supporting my requirements in any easy way switching to a static build of ffmpeg was the simplest solution.
The commands then became:
ffmpeg -i video.mp4 -vf scale=320:-1,fps=1/10 -q:v 6 img%03d.jpg
and
ffmpeg -i img%03d.jpg -filter_complex tile=6x1 output.jpg
I have an mp4 that I want to overlay on top of a jpeg. The command I'm using is:
Ffmpeg -y -i background.jpg -i video.mp4 -filter_complex "overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2" -codec:a copy output.mp4
But for some reason, the output is 0 second long but the thumbnail does show the first frame of the video centred on the image properly.
I have tried using -t 4 to set the output's length to 4 seconds but that does not work.
I am doing this on windows.
You need to loop the image. Since it loops indefinitely you then must use the shortest option in overlay so it ends when video.mp4 ends.
ffmpeg -loop 1 -i background.jpg -i video.mp4 -filter_complex \
"overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2:shortest=1" \
-codec:a copy -movflags +faststart output.mp4
See overlay documentation for more info.
Well you should loop the image until the video duration. So to do the you need to add -loop 1 before the input image. Then the image will have a infinite duration. So to control it specify -shortest before the output file which will trim all the streams to the shortest duration among them. Else you can use -t to trim the image duration to the video length. This will do what you want.
Hope this helps!
Need to add watermark for first 3 seconds the video using ffmpeg. Here's what I got right now:
ffmpeg -y -i '255871.mov' -qscale:v 0 -qscale:a 0 -vf '[in] transpose=1 [out];movie=watermark.png , select=lte(t\,3) [bg]; [out][bg] overlay=x=20:y=main_h-60 [out]' output.mp4
It rotates video to the right and adds watermark at the bottom of the video for first 3 seconds. The problem is watermark is visible during the whole video.
Thought that select doesn't work at all. Tried following command
ffmpeg -y -i '255871.mov' -qscale:v 0 -qscale:a 0 -vf '[in] transpose=1 [out];movie=watermark.png , select=0 [bg]; [out][bg] overlay=x=20:y=main_h-60 [out]' output.mp4
Watermark is not visible. This is correct and proves that select filter works as expected. As I understand this is how ffmpeg works: it leaves last frame of the shortest video visible.
How can I force ffmpeg to discard show watermark after N seconds?
Have to answer it myself. ffmpeg mailing list helped me to solve the issue.
The main idea is to convert existing watermark into video using Apple Animation codec (it supports transparency) and fade out last frame of created video using fade filter.
Example:
ffmpeg -loop 1 -i watermark.png -t 3 -c qtrle -vf 'fade=out:73:1:alpha=1' watermark.mov
ffmpeg -y -i '255871.mov' -qscale:v 0 -qscale:a 0 -vf '[in] transpose=1 [out];movie=watermark.mov [bg]; [out][bg] overlay=x=20:y=main_h-60 [out]' output.mp4
Fade out is required because ffmpeg uses last frame of overlaid video for the rest of the video. This filter makes last frame fully transparent via alpha=1 parameter. In fact it should be fade=out:74:1:alpha=1, but it didn't work for me, don't know why