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Help with finding a solution to watermark on video being unsharp/pixelated

Discussion in 'PHP' started by chrisj, May 17, 2019 at 9:03 AM.

  1. #1
    the web video script that I’m using adds a watermark successfully, however, the watermark.png looks ok on the small screen, but when full screen is selected the watermark.png image looks much less sharp.
    ‘scale2ref’ seems like a possible solution. I have tried different attempts with it without success. The ffmpeg documentation shows:

    “Scale a logo to 1/10th the height of a video, while preserving its display aspect ratio”:

    I need guidance with integrating scale2ref into a current line of code, for example:

    $ffmpegCommand =''.$ffmpeg_b.' -y -i '.$video_file_full_path.' -i '.escapeshellarg($watermark_image_full_path).' -i '.escapeshellarg($watermark_image_full_path).' -filter_complex "scale=426:-2, scale=426:-2, overlay=10:10, overlay=170:170:enable=between(t\,5\,5+2)" -vcodec libx264 -preset '.$pt->config->convert_speed.' -crf 26 '.$video_output_full_path_240.' 2>&1';
    Code (markup):
    any additional assistance is appreciated.
    chrisj, May 17, 2019 at 9:03 AM IP