--- title: "How to add a notification pop-up with Claude (tested prompt and script)" description: "A white phone notification with a red shopping-bag icon drops in at the top saying \"Your serum is back in stock\", then slides away. Install one skill and ask Claude Code, or run the Python script we tested yourself." url: https://www.recharm.com/effects/notification-pop-up --- # How to add a notification pop-up with Claude A white phone notification with a red shopping-bag icon drops in at the top saying "Your serum is back in stock", then slides away. Made by the script on this page, from our own test clip. ## Get this effect 1. ### Switch to Code in your [Claude Desktop App](https://claude.com/download) 2. ### Install the skill (once) ``` Install the Recharm video effects skill: download https://recharm-growth-staging.s3.us-east-2.amazonaws.com/website/downloads/recharm-video-effects.zip and unzip it into ~/.claude/skills ``` 3. ### Ask for the effect ``` Add a notification pop-up to input.mp4 App, when: SHOP, now Title: Your serum is back in stock Body: Only 50 left. Tap to grab yours ``` ## Several videos, several effects, one ask Put your clips in the folder, mention them with @, and ask for everything at once. Claude runs one tested script after another on each clip, then joins them. Add a notification pop-up to **@clip1.mp4**, put a sale badge on **@clip2.mp4**, give **@clip3.mp4** a VHS look, then join all three with crossfades. ## Settings you can change Ask Claude to change any of these, or edit them at the top of the script. | Setting | Default | What it does | | ------------ | --------------------------------- | ------------------------------------------ | | `APP, WHEN` | `SHOP, now` | App name and time stamp on the top line. | | `TITLE` | `Your serum is back in stock` | Bold line. | | `BODY` | `Only 50 left. Tap to grab yours` | Grey line under it. | | `START` | `0.5` | Second the banner starts dropping in. | | `HOLD` | `3.0` | Seconds it stays down before sliding away. | | `ICON_COLOR` | `(255, 59, 48)` | App icon color. | ## Without the skill Don’t want to install the skill? Paste this prompt into Claude Code and Claude writes the script itself. ``` Add a phone-style notification to input.mp4: a pure white (255, 255, 255) rounded banner 92% of the frame width, centered across, its top 4% of the way down, with a soft dark shadow. On its left, a red (255, 59, 48) rounded-square app icon 13% of the banner width with a white shopping bag on it; to its right, "SHOP" in small grey, "now" in small grey at the right edge, "Your serum is back in stock" in black bold, and "Only 50 left. Tap to grab yours" in grey under it. The banner drops in from above the top edge at 0.5 seconds over 0.4 seconds with a slight bounce, stays fully down for 3 seconds, then slides back up out of frame over 0.4 seconds (gone by 4.3 seconds). Use Python with Pillow to draw it and ffmpeg to put it on the video (don't rely on ffmpeg's drawtext filter), keep the audio, and save it as output.mp4. ``` ## Run it without Claude This is the exact script we tested. Save it as `notification-pop-up.py` and run: ``` python3 notification-pop-up.py input.mp4 output.mp4 ``` ``` #!/usr/bin/env python3 """Notification pop-up: a phone-style banner drops in from the top edge, sits for a few seconds, then slides away. Usage: python3 notification-pop-up.py input.mp4 output.mp4 Needs ffmpeg and Pillow (pip install pillow). """ import json import math import subprocess import sys from pathlib import Path from PIL import Image, ImageDraw, ImageFilter, ImageFont APP = "SHOP" # app name in small caps beside the icon WHEN = "now" # time stamp on the right TITLE = "Your serum is back in stock" # bold line BODY = "Only 50 left. Tap to grab yours" # grey line under it START = 0.5 # second the banner starts dropping in DROP = 0.4 # seconds the drop takes HOLD = 3.0 # seconds it stays fully down before sliding back up WIDTH = 0.92 # banner width as a share of the frame width TOP = 0.04 # gap above the banner as a share of the frame height ICON_COLOR = (255, 59, 48) # app icon color FONTS = ["/System/Library/Fonts/Supplemental/Arial Bold.ttf", # macOS "/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf", # Linux "C:/Windows/Fonts/arialbd.ttf"] # Windows REGULAR_FONTS = ["/System/Library/Fonts/Supplemental/Arial.ttf", # macOS "/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", # Linux "C:/Windows/Fonts/arial.ttf"] # Windows FONT_FILE = next((f for f in FONTS if Path(f).exists()), None) or sys.exit("No bold font found: add one to FONTS") REGULAR_FILE = next((f for f in REGULAR_FONTS if Path(f).exists()), None) or sys.exit("No font found: add one to REGULAR_FONTS") def banner(): """The white banner with its soft shadow, drawn once.""" bw = round(w * WIDTH) pad, icon = round(bw * 0.04), round(bw * 0.13) bh = icon + 2 * pad + round(bw * 0.03) shadow = round(bw * 0.04) img = Image.new("RGBA", (bw + 2 * shadow, bh + 2 * shadow)) draw = ImageDraw.Draw(img) draw.rounded_rectangle([shadow, shadow + 4, shadow + bw, shadow + bh + 4], radius=bh // 4, fill=(0, 0, 0, 70)) img = img.filter(ImageFilter.GaussianBlur(shadow / 2)) draw = ImageDraw.Draw(img) x0, y0 = shadow, shadow draw.rounded_rectangle([x0, y0, x0 + bw, y0 + bh], radius=bh // 4, fill="white") ix, iy = x0 + pad, y0 + (bh - icon) // 2 draw.rounded_rectangle([ix, iy, ix + icon, iy + icon], radius=icon // 4, fill=ICON_COLOR) bag = [ix + icon * 0.28, iy + icon * 0.38, ix + icon * 0.72, iy + icon * 0.78] draw.rounded_rectangle(bag, radius=icon // 14, fill="white") draw.arc([ix + icon * 0.37, iy + icon * 0.2, ix + icon * 0.63, iy + icon * 0.52], 180, 360, fill="white", width=max(2, icon // 14)) tx = ix + icon + pad small = ImageFont.truetype(REGULAR_FILE, round(bw * 0.034)) title = ImageFont.truetype(FONT_FILE, round(bw * 0.050)) body = ImageFont.truetype(REGULAR_FILE, round(bw * 0.046)) top = iy - round(bw * 0.012) draw.text((tx, top), APP, font=small, fill=(130, 130, 135)) draw.text((x0 + bw - pad, top), WHEN, font=small, fill=(130, 130, 135), anchor="ra") draw.text((tx, top + round(bw * 0.050)), TITLE, font=title, fill=(20, 20, 20)) draw.text((tx, top + round(bw * 0.112)), BODY, font=body, fill=(70, 70, 75)) return img, shadow def offset(t): """How far the banner has come down: 0 = hidden above the frame, 1 = in place.""" if t < START: return 0 if t < START + DROP + HOLD: return ease_out_back((t - START) / DROP) return 1 - ease_in((t - START - DROP - HOLD) / DROP) def ease_out_back(p): """0 -> 1 with a small overshoot past 1 before settling, so the banner lands with a little bounce.""" p = min(max(p, 0), 1) return 1 + 2.2 * (p - 1) ** 3 + 1.2 * (p - 1) ** 2 def ease_in(p): p = min(max(p, 0), 1) return p * p def overlay(t): img = Image.new("RGBA", (w, h)) k = offset(t) if k > 0: rest = round(h * TOP) - margin hidden = -card.height img.alpha_composite(card, (round((w - card.width) / 2), round(hidden + (rest - hidden) * k))) return img def probe(path): info = json.loads(subprocess.check_output(["ffprobe", "-v", "error", "-select_streams", "v:0", "-show_entries", "stream=width,height,r_frame_rate:format=duration", "-of", "json", path])) s = info["streams"][0] num, den = s["r_frame_rate"].split("/") return s["width"], s["height"], s["r_frame_rate"], float(num) / float(den), float(info["format"]["duration"]) def render(src, out): """Draw overlay(t) on every frame of src and save to out, keeping the audio.""" ff = subprocess.Popen(["ffmpeg", "-y", "-v", "error", "-i", src, "-f", "rawvideo", "-pix_fmt", "rgba", "-s", f"{w}x{h}", "-r", rate, "-i", "-", "-filter_complex", "[0:v][1:v]overlay=shortest=1,format=yuv420p[v]", "-map", "[v]", "-map", "0:a?", "-c:v", "libx264", "-crf", "18", "-c:a", "copy", out], stdin=subprocess.PIPE) for i in range(math.ceil(duration * fps)): ff.stdin.write(overlay(i / fps).tobytes()) ff.stdin.close() if ff.wait(): sys.exit("ffmpeg failed") src, out = sys.argv[1:3] w, h, rate, fps, duration = probe(src) card, margin = banner() render(src, out) ``` ## More hook openers - [Blur-to-focus reveal **Blur-to-focus reveal**](https://www.recharm.com/effects/blur-to-focus-reveal) - [Breaking news banner **Breaking news banner**](https://www.recharm.com/effects/breaking-news-banner) - [Camera shake **Camera shake**](https://www.recharm.com/effects/camera-shake) - [Color reveal **Color reveal**](https://www.recharm.com/effects/color-reveal) - [Countdown intro **Countdown intro**](https://www.recharm.com/effects/countdown-intro) ## Find 3x _winning ads_ Recharm cuts your ad footage into tagged, searchable clips: hooks, testimonials, product shots. Find the shots that win, add the effect with Claude, and ship 3x more ad edits. [Start 14-day free trial](https://www.recharm.com/get-started)