Scoped Storage - Could not open file about ffmpeg-kit

[tanersener]

I fixed it on the development branch.

[tanersener]

I tested your code using test applications under the ffmpeg-kit-test repository but didn't get any errors. I suggest doing the same and testing your issue with them. There is an SAF tab inside those apps. You can modify and use it to reproduce this issue.

[blue-peacock]

Have you tried with an image?
When I try to create a video it works without an error using the following code:

                String filePrefix = "video";
                String fileExtn = ".mp4";
                ContentValues contentValues = new ContentValues();
                contentValues.put(MediaStore.Images.Media.RELATIVE_PATH, "Movies/Test");
                contentValues.put(MediaStore.Images.Media.DISPLAY_NAME, filePrefix + fileExtn);
                contentValues.put(MediaStore.Images.Media.MIME_TYPE, "video/mp4");
                outUri = requireContext().getContentResolver().insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, contentValues);

With the following code to create an image I'm able to reproduce the Could not open file error in your SAF Test application:

                String filePrefix = "image";
                String fileExtn = ".jpeg";
                ContentValues contentValues = new ContentValues();
                contentValues.put(MediaStore.Images.Media.RELATIVE_PATH, "Pictures/Test");
                contentValues.put(MediaStore.Images.Media.DISPLAY_NAME, filePrefix + fileExtn);
                contentValues.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
                outUri = requireContext().getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);

I was using the following ffmpeg command for testing the video and image code. In the video case it works.

            final String ffmpegCommand = "-i " + image1File.getAbsolutePath() + " -i " + image2File.getAbsolutePath() + " -filter_complex \"[0]transpose=1[a]; [1]scale=100:100[2]; [a][2]overlay=300:300[b]; " +
                    "[b]drawtext=fontfile=/system/fonts/DroidSans.ttf: text='Text': fontcolor=black: fontsize=100: x=100: y=90: box=1: [email protected]: boxborderw=20:\" -qscale:v 0 " + videoPath;

[tanersener]

It seems like this case is not handled by the SAF support implemented in ffmpeg-kit. As far as I understand, your command uses image2 muxer to encode the output jpeg file. But, image2 muxer doesn't know how to open those SAF urls. That's why your command fails.

SAF wrapper approach taken by ffmpeg-kit covers most of the cases. But it doesn't cover this one. And, it is not easy to use the same approach to handle your case. Because image2 muxer is an ffmpeg module. And, modifying its behaviour means modifying ffmpeg source code. Which is something we avoid.

We need to revisit the design of SAF support in ffmpeg-kit to handle this case.

[blue-peacock]

Ok thanks. Interesting that the same command works in the video case but not in the image case. So there is no other (SAF compatible) way to overlay 2 images than this command?

[tanersener]

Most probably no. But I'm not % 100 sure.

[abkoradiya]

@tanersener Is this issue fixed?

[tanersener]

Fixed in v4.5 release.