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The Great Big Beautiful Tomorrow
28 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Texte
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Sur d’autres sites (8998)
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ffmpeg :how to apply animation in multiple images that will me merged in a video template in android
1er mars 2023, par Pavan GhanateI am trying to merge number of selected images from gallery to a video template in order to make video status or short video in a android app, I am able to merge the selected images in the video using below cammand now i want to add animation


ArrayList<string> cmd2 = new ArrayList<>();
 cmd2.add("-y");
 cmd2.add("-i");
 if (video_temp_path!= null){
 cmd2.add(video_temp_path);
 }else {
 cmd2.add(Environment.getExternalStorageDirectory().getPath()
 + "/Download/happy.mp4");
 }


 for (int no = 0; no < paths.length; no++) {
 cmd2.add("-i");

 cmd2.add(paths[no]);

 }

 cmd2.add("-filter_complex");



 cmd2.add("[0][1]overlay=x=100:y=200:enable='between(t,3,8)'[v1];" +
 "[v1][2]overlay=x=100:y=200:enable='between(t,10,15)'[v2];" +
 "[v2][3]overlay=x=100:y=200:enable='gt(t,17)'[v3]");
 cmd2.add("-map");
 cmd2.add("[v3]");
 cmd2.add("-map");
 cmd2.add( "0:a");
 cmd2.add(Environment.getExternalStorageDirectory().getPath()
 + "/Download/output.mp4");
</string>

but now i want to add fade in out animation to images so I am using this cammand generated by chatgpt but its giving me error


ArrayList<string> cmd2 = new ArrayList<>();
 cmd2.add("-y");
 cmd2.add("-i");

 if (video_temp_path != null) {
 cmd2.add(video_temp_path);
 } else {
 cmd2.add(Environment.getExternalStorageDirectory().getPath() +
 "/Download/happy.mp4");
}

for (int no = 0; no < paths.length; no++) {
 cmd2.add("-loop");
 cmd2.add("1"); // loop the image

 cmd2.add("-t");
 cmd2.add("5"); // duration of the image

 cmd2.add("-i");
 cmd2.add(paths[no]);

 cmd2.add("-filter_complex");
 cmd2.add("[1:v]fade=in:st=0:d=1[tin];" +
 "[1:v]fade=out:st=4:d=1[tout];" +
 "[0:v][tin]overlay=x=100:y=200" +
 "[v1];" +
 "[v1][tout]overlay=x=100:y=200:enable='between(t,10,15)'[v2];" +
 "[v2][2:v]overlay=x=100:y=200:enable='gt(t,17)'[v3]");

 cmd2.add("-map");
 cmd2.add("[v3]");
 cmd2.add("-map");
 cmd2.add("0:a");
}

cmd2.add(Environment.getExternalStorageDirectory().getPath() +
 "/Download/output.mp4");
</string>

error is


Option map (set input stream mapping) cannot be applied to input url /storage/emulated/0/Pictures/temp/1677570327312.jpg -- you are trying to apply an input option to an output file or vice versa. Move this option before the file it belongs to.


2023-03-01 12:50:50.707 5950-6326/com.android.mergevideo E/mobile-ffmpeg : Error parsing options for input file /storage/emulated/0/Pictures/temp/1677570327312.jpg.
2023-03-01 12:50:50.707 5950-6326/com.android.mergevideo E/mobile-ffmpeg : Error opening input files :
2023-03-01 12:50:50.707 5950-6326/com.android.mergevideo E/mobile-ffmpeg : Invalid argument


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Video Keyframe and Iframe
12 avril 2021, par SY MoonI have confused one thing for Video Frame extraction.


I have
sample.mp4video, 15FPS.

I tried extracting Keyframe with FFMPEG.


ffmpeg -skip_frame nokey -i sample.mp4 -vsync 0 -frame_pts true out%d.png


I get 29 Pictures and I believe I have got 29 I frames. (If I have wrong, Please correct me)


Then I tried extracting specific timeline(10 sec) frame with picture


ffmpeg -i sample.mp4 -ss 00:00:10 -frames:v 1 test1.png


This output picture, I can not find same one among my Keyframes I get.


Question :
test1.png, What is frame type ? Does it one of P or B frame not I ?

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ffmpeg motion interpolation alternatives or speedup
27 décembre 2022, par UralI use ffmpeg to create videos, it is awesome tool. I create videos from pictures and need to make them as smooth as possible. I found, that what I need called 'motion interpolation'. I started to search all forums, and found only 3 things can help me : slowmovideo, butterflow and new ffmpeg's filter minterpolate.



slowmovideo needs many configuration, I was not able to get it to work as I want.
with butterflow, I tried anything. From installing OpenCL, OpenGL and other stuff to switching to nvidia binary drivers and installing all sdk tools and cuda. It never worked. Some error about cuda, and google don't know about it.



So third option was the only one available. When I tried it, it did exactly what I want ! But it is incredibly SLOW. I have 8-core CPU, and it processes about 0.1-0.3 fps. And uses just 1 CORE, no video card.



Is there any ways to motion interpolate frames on GPU or on CPU but faster ? Only GNU/Linux


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