[FR] Feature request: add watermark to video #6
Description
Sorry for the feature-request-spamming, got another idea for this great addon. We could definately use a watermark function! :-)
I used to have a script that added a watermark on top left, right or bottom left/right, and used different images for different video dimensions, so the size of the watermark was also in ratio with the size of the video.
So, it you let users upload these images, define the path and position in config (or as parameters!) it should be easy to implement. I'm sure you know how this all works, but here's a part of the code/idea. Maybe it will help you.
/ -----------------------------------------------
// video specs
// -----------------------------------------------
$height = $video_data['height'];
$width = $video_data['width'];
// -----------------------------------------------
// determine logo dimension
// -----------------------------------------------
$logo_1080 = '/path/to/logo_1080.png';
// etc.
if ($width >= 1900) {
$logo_argument = $logo_1080;
} elseif ($width >= 1100 ) {
$logo_argument = $logo_720;
} elseif ($width >= 800 ) {
$logo_argument = $logo_480;
} elseif ($width >= 600 ) {
$logo_argument = $logo_360;
} elseif ($width >= 350 || $width <= 380) {
$logo_argument = $logo_240;
// ----------------------------------------------
// logo offset
// ----------------------------------------------
$position = ' ';
// increase offset for bigger videos (preseve offset ratio)
if($logo_offset_x > 0) {
if ($width >= 1900) $logo_offset_x *= 5; // 1080p
elseif ($width >= 1100 ) $logo_offset_x *= 3.5; // 720p
elseif ($width >= 800 ) $logo_offset_x *= 2.5; // 480p
elseif ($width >= 600 ) $logo_offset_x *= 2; // 360p
elseif ($width >= 350 || $width <= 380) $logo_offset_x *=1; // 240p
}
if($logo_offset_y > 0) {
if ($width >= 1900) $logo_offset_y *= 5; // 1080p
elseif ($width >= 1100 ) $logo_offset_y *= 3.5; // 720p
elseif ($width >= 800 ) $logo_offset_y *= 2.5; // 480p
elseif ($width >= 600 ) $logo_offset_y *= 2; // 360p
elseif ($width >= 350 || $width <= 380) $logo_offset_y *=1; // 240p
}
$debug_string .= "[INFO] logo offset: " . $logo_offset_x . "/" . $logo_offset_y . "\n";
// ----------------------------------------------
// logo position
// ----------------------------------------------
$position = ' ';
switch($logo_position) {
case 'top_left':
$position = 'overlay=' . $logo_offset_x . ':' . $logo_offset_y;
break;
case 'top_right':
$position = 'overlay=main_w-overlay_w-' . $logo_offset_x . ':' . $logo_offset_y;
break;
case 'bottom_left':
$position = 'overlay=' . $logo_offset_x . ':main_h-overlay_h-' . $logo_offset_y;
break;
case 'bottom_right':
$position = 'overlay=main_w-overlay_w-' . $logo_offset_x . ':main_h-overlay_h-' . $logo_offset_y;
break;
case 'center_middle':
$position = 'overlay=main_w/2-overlay_w/2:main_h/2-overlay_h/2';
break;
default:
$position = 'overlay=main_w-overlay_w-' . $logo_offset_x . ':' . $logo_offset_y;
}
// $position string is then added to the ffmpeg encode string / command
// example; [watermark]; [in] [watermark] ' . $position . '
Cheers!