Optical flow Analysis vs Unroll

Perform optical flow analysis and visualize the amount of object movement between consecutive frames

Record your screen or pick a few screenshots, and Unroll stitches them into one seamless long image. Chats, web pages, articles, movie lines — anything too long for one screen, saved whole and ready to share. STITCH WITHOUT THE HASSLE • Long Screenshot from video: screen record while you scroll, and Unroll pulls the frames into one sharp long image • Web Page Capture: open a page in the app, or choose "Unroll - Web Page Capture" in Safari's share menu to save the whole page as one image • Remove Overlap: finds repeated content between screenshots automatically; Remove Fixed Bars trims repeated status, navigation and tab bars • Subtitle Stitch: keeps the first frame whole and only the subtitles from the rest, so a movie scene fits in one image • Vertical or horizontal: tall scrolling screenshots or wide panoramas PRECISE, DOWN TO THE DETAIL • Seam check: uncertain seams are flagged so you can confirm or fine-tune each one • Segments: delete a whole piece, trim ads and clutter, or use "Split Segment" to cut out the middle of a screenshot • Markup: arrows, text, boxes and numbers — tap to move or delete PRIVACY IN ONE TAP • Auto-Redact Personal Info: finds phone, ID and card numbers and emails, and redacts them in one tap • Manual redaction: Mosaic, Blur or Solid to hide amounts and ID numbers before you share EXPORT YOUR WAY • Extract Text: reads the text in your long image on device — copy or share it in one tap • PDF: a single long page, or A4 / US Letter pages that never split a line of text; add Searchable Text • Slices: cut for chats or 3:4 social feeds, or zip them all up • Device Frame & Watermark: wrap it in a phone frame, add a text or image watermark • Full-quality export: original resolution kept; delete the source screenshots after saving to free up space GRIDS FOR YOUR FEED • Split: cut one photo into a 2×2 or 3×3 grid, save the tiles to Photos or as a ZIP, and post them as one big picture • Combine: put several photos into one grid image, with adjustable spacing, corners and background color • Stickers: 32 themes and 900+ stickers — tap "Decorate" to place them for you, or add them to a photo without cutting it MORE TOUCHES • Accent colors and alternate app icons • Switch the app language in Settings, instantly Stitching and text recognition happen on your device — your screenshots are never uploaded. Some features require Pro. Terms of Use: https://sites.google.com/view/unroll-terms Privacy Policy: https://sites.google.com/view/unroll-privacy