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scripts/assets/aynwerd-watermark-logo.png
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src/controllers/content.controller.js
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@@ -51,7 +51,7 @@ async function getLessonAccess(req, res, next) {
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const { url, expiresAt } = getSignedPlaybackUrl(lesson.cloudinaryPublicId, lesson.cloudinaryResourceType, {
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format: lesson.format,
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viewer: {
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});
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await AuditLog.create({
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const { url, expiresAt } = getSignedPlaybackUrl(lesson.cloudinaryPublicId, lesson.cloudinaryResourceType, {
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format: lesson.format,
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viewer: { email: req.user.email },
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});
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await AuditLog.create({
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src/utils/cloudinaryUpload.js
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@@ -61,43 +61,40 @@ function deleteAsset(publicId, resourceType) {
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}
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/**
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* Builds the overlay layers that stamp a video with the
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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function buildWatermarkTransformation({
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const label = `${name} • ${email}`;
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const textLayer = (gravity) => ({
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overlay: {
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font_family: "Arial",
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font_size: 20,
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font_weight: "bold",
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text: label,
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},
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color: "white",
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opacity: 45,
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gravity,
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x: 18,
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y: 18,
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});
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return [
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textLayer("north_west"),
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textLayer("south_east"),
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{
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overlay: { public_id: WATERMARK_LOGO_PUBLIC_ID, resource_type: "image" },
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width:
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opacity:
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gravity: "south_west",
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x:
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y:
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},
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];
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}
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@@ -108,8 +105,8 @@ function buildWatermarkTransformation({ name, email }) {
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* cannot be redistributed as a permanent download.
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*
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* When `viewer` is provided and the asset is a video, the URL also
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* carries a per-viewer watermark
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* buildWatermarkTransformation above) — Cloudinary renders that
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* watermarked derivative on the fly and signs the transformed URL, so
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* the overlay can't be stripped without the original signed request.
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* Watermarking only applies to video; document/raw lessons (PDFs,
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}
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/**
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* Builds the overlay layers that stamp a video with the Aynwerd logo
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* plus the viewing learner's email, so any leaked/recorded copy is
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* both clearly branded and traceable back to the account it leaked
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* from. Applied at request time, per viewer — nothing pre-baked, so
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* the same source video is watermarked differently for every learner
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* who opens it.
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*
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* Logo sits top-right (matching a standard, clearly-visible corner
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* bug like most watermarked platform videos), email sits bottom-left
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* — opposite corner, so the two marks don't overlap and a crop that
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* removes one is unlikely to remove both.
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*/
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function buildWatermarkTransformation({ email }) {
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return [
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{
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overlay: { public_id: WATERMARK_LOGO_PUBLIC_ID, resource_type: "image" },
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width: 160,
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opacity: 90,
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gravity: "north_east",
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x: 24,
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y: 24,
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},
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{
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overlay: {
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font_family: "Arial",
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font_size: 22,
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font_weight: "bold",
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text: email,
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},
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color: "white",
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opacity: 85,
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gravity: "south_west",
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x: 20,
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y: 20,
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},
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];
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}
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* cannot be redistributed as a permanent download.
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*
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* When `viewer` is provided and the asset is a video, the URL also
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* carries a per-viewer watermark (Aynwerd logo + the learner's email —
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* see buildWatermarkTransformation above) — Cloudinary renders that
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* watermarked derivative on the fly and signs the transformed URL, so
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* the overlay can't be stripped without the original signed request.
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* Watermarking only applies to video; document/raw lessons (PDFs,
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