Overlay while recording video?

[developerandroid123]

Can we add overlay like text,image or video while recording ?

[CrazyOrr]

Yes, please refer to #11

[developerandroid123]

I am not able to get any hint about overlay from #11

[Jagdeep-Sing]

i also want overlay

[CrazyOrr]

You should search for FFmpeg feature for your need, like overlay.

[Jagdeep-Sing]

i read that documentation and code, now where should is i place it? in resumeRecording() function? im not getting it

[Jagdeep-Sing]

can anyone please help who successfully completed it?

[Jagdeep-Sing]

@CrazyOrr, needs your help
How do i implement following code in this project:

drawtext="fontsize=15:fontfile=FreeSerif.ttf:text=LONG_LINE:y=h-line_h:x=-50*t"

this is drawtext property of ffmpeg, how do i implement this?

after searching i found THIS.
but i dont know where to add this command in this project so that text will be added to video.

Thanks!

[CrazyOrr]

Check out FFmpegFrameFilter used in VideoRecordThread, there are 'transpose' and 'crop' filters used in this project already as examples for you.

[Jagdeep-Sing]

Thanks for your response!!
I see in code, you apply filter like this :

List<String> filters = new ArrayList<>();
String transpose = null;

transpose = "transpose=cclock"; //cclock is a filter
//then you add filter like this
filters.add(transpose);

FFmpegFrameFilter frameFilter = new FFmpegFrameFilter(TextUtils.join(",", filters),previewWidth, previewHeight);

**Can I do same also for adding text? like :**

List<String> filters = new ArrayList<>();
String drawtext = null;

drawtext = "drawtext=fontsize=15:fontfile=FreeSerif.ttf:text=LONG_LINE:y=h-line_h:x=-50*t";
//then apply text like this
filters.add(drawtext);

FFmpegFrameFilter frameFilter = new FFmpegFrameFilter(TextUtils.join(",", filters),previewWidth, previewHeight);

**am I right? please help...**

[Jagdeep-Sing]

UPDATE
In drawtext documentation of ffmpeg they wrote that :

To enable compilation of this filter, you need to configure FFmpeg with --enable-libfreetype.

drawtext

[CrazyOrr]

Yes, according to this, --enable-libfreetype has already been configured for building this FFmpeg library. If not so, try again with the latest version of JavaCV or build it by yourself.

[Jagdeep-Sing]

okay thanks, can you then please help where i place this code, i tried with code that i posted here but it results in force close.

[CrazyOrr]

It crashes with Fatal signal 11 (SIGSEGV), code 1, fault addr 0x18 in tid 24319 now.
Refer to this issue of JavaCV.

[Jagdeep-Sing]

Same error for me and I didn't find any solution there. that issue is for building JavaCV with libfreetype but this project is already configured for that, its a confusion now

[Jagdeep-Sing]

got same error when use :
overlay
error:

android A/libc: Fatal signal 11 (SIGSEGV), code 1, fault addr 0x18 in tid 320 (Thread-24542)

[Jagdeep-Sing]

UPDATE:
I tried it with latest version of JAVACV by changing the version in dependencies and got the same error.
maybe I'm doing some syntax error I think.

[CrazyOrr]

You can try the commands out by using FFmpeg on your computer.

[Jagdeep-Sing]

yes in command line its working fine, I tested in Ubuntu