Question

这里我试图创建一个带有顶部和底部文本的视频编辑器。我可以在顶部和底部设置2个文本，使用不同的文本大小，颜色和字体，我将该文本转换为图像并添加为水印。

但是当视频分辨率降低时，水印图像的大小会增加，反之亦然。我正在使用ffmpeg命令。现在我的计算方法如下所示。

  if (video_width <= 300) {

                Log.e("less than", "300");
                water_resolution_bt = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_bt_width / 2 + 30) + ":" + getDPsFromPixels(getApplicationContext(), tv_bt_height / 2 + 15));

                water_resolution = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_top_width / 2 + 30) + ":" + getDPsFromPixels(getApplicationContext(), tv_top_height / 2 + 15));

            } else if (video_width > 300 && video_width <= 400) {

                Log.e("less than", "400");
                water_resolution_bt = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_bt_width / 2 + 130) + ":" + getDPsFromPixels(getApplicationContext(), tv_bt_height / 2 + 70));

                water_resolution = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_top_width / 2 + 130) + ":" + getDPsFromPixels(getApplicationContext(), tv_top_height / 2 + 70));

            } else if (video_width > 400 && video_width <= 600) {
                Log.e("btw ", "400 and 600");
                water_resolution_bt = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_bt_width + 80) + ":" + getDPsFromPixels(getApplicationContext(), tv_bt_height + 40));

                water_resolution = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_top_width + 80) + ":" + getDPsFromPixels(getApplicationContext(), tv_top_height + 40));
            } else if (video_width > 600 && video_width <= 1000) {
                Log.e("btw ", "600 and 1000");
                water_resolution_bt = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_bt_width + 100) + ":" + getDPsFromPixels(getApplicationContext(), tv_bt_height + 100));

                water_resolution = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_top_width + 100) + ":" + getDPsFromPixels(getApplicationContext(), tv_top_height + 100));

            } else if (video_width > 1000) {
                Log.e("grthr than ", "1000");
                water_resolution = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_top_width * 2 + 20) + ":" + getDPsFromPixels(getApplicationContext(), tv_top_height * 2 + 20));
                water_resolution_bt = String.valueOf(getDPsFromPixels(getApplicationContext(), tv_bt_width * 2 + 20) + ":" + getDPsFromPixels(getApplicationContext(), tv_bt_height * 2 + 20));

            }

这不会给出准确的结果。任何人都可以建议任何其他计算方法。我也试过＆＃34; drawtext＆＃34;方法。它也有同样的问题。

如何根据视频分辨率设置水印分辨率？

0 个答案: