Merge views with an existing video

Question

I want to merge a view with an already existing video and get a video out of it. An example would be, adding a text with a Textview on a video. This functionality can be seen by many social media apps like tik tok and instagram.

How are they doing that, someone got an idea? Currently I just have a Textview and a ScalableVideoView overlayed, but Idk how to merge them into an video.

check this - https://stackoverflow.com/a/20358243/7649582 – Asteroid Aug 30 '19 at 07:24 — Asteroid, Aug 30 '19 at 07:24

score 6 · Answer 1 · answered Aug 25 '19 at 06:37

6

I think that you can achieve that using "ffmpeg" to generate a new video using an image/video overlay.

Check this post talking about this tool:ffmpeg

If you want to use ffmpeg on Android follow this link to build and call it from Android with JNI: ffmpeg on Android

source of ffmpeg: source

Hope it helps.

answered Aug 25 '19 at 06:37

Ariel Carrera

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how would it look like, when i add multiple texts ? – Ahmet K Sep 01 '19 at 10:44
Hi @AhmetKazaman you can use multiple images in intervals like this: https://stackoverflow.com/a/42945032/2493852 – Ariel Carrera Sep 01 '19 at 14:01

score 0 · Answer 2 · answered Sep 01 '19 at 00:07

I would like to add, that you can use ffmpeg to create the image file, too (see end of posting):

create text video/image with ffmpeg

Conclusion: As far as i know, you need to do it in two steps (Example under windows):

ffmpeg.exe -f lavfi -i color=c=black@0.0:s=640x480,format=rgba -vf "drawtext=fontfile="C\\:/Windows/fonts/arialbd.ttf":fontsize=72:fontcolor='white':x=(w-text_w)/2:y=(h-text_h)/2:text='Stack Overflow'" -frames:v 1 overlay.png
ffmpeg.exe -i inputvideo.mp4 -i overlay.png -filter_complex "[0:v][1:v] overlay=25:25:enable='between(t,0,20)'" -pix_fmt yuv420p -c:a copy output.mp4

Merge views with an existing video

2 Answers2