# Reelcraft > Audio, video & image batch studio: cut, convert, compress, subtitle, reframe Reelcraft turns twenty usefulweb media tools into one workspace. Collect clips, recordings, photos, subtitles and SVGs in a local library, chain the tools into recipes, and run them over many files with a queue that respects the rate limit, retries and keeps every result on your device. Delivery checks for Reels, podcasts, e-mail or web images, A/B comparisons, loudness and privacy findings, a release calendar and a printable report show what is ready to publish. Reelcraft (Audio, video & image batch studio) is a premium app of usefulweb.site (https://usefulweb.site/): a full program that runs in the browser. Its engine is deterministic and the same functions are exposed as tools, so an agent can compute exactly what the app shows. ## Use it - Landing page: https://reelcraft.usefulweb.site/ - Workspace (browser app): https://reelcraft.usefulweb.site/app - open a project with https://reelcraft.usefulweb.site/app#project= or a template with https://reelcraft.usefulweb.site/app#template= - Project file format (JSON Schema): https://reelcraft.usefulweb.site/project.schema.json - Tutorials: https://reelcraft.usefulweb.site/tutorials - JSON API: POST https://reelcraft.usefulweb.site/api/v1/tools//calculate (catalog: https://reelcraft.usefulweb.site/api/v1/tools) - OpenAPI: https://reelcraft.usefulweb.site/openapi.json - MCP (Streamable HTTP): https://reelcraft.usefulweb.site/mcp ## Engine tools - [Video Cutter & Merger](https://videocuttermerger.usefulweb.site/): Trim video, remove a section or join clips: lossless copy or frame-exact re-encode. API: POST https://reelcraft.usefulweb.site/api/v1/tools/video-cutter-merger/calculate · MCP tool `video_cutter_merger` - [Universal Video Converter](https://videoconverter.usefulweb.site/): Convert video to MP4, WebM, MOV or MKV: resize, set quality and fps, or remux losslessly. API: POST https://reelcraft.usefulweb.site/api/v1/tools/video-converter/calculate · MCP tool `video_converter` - [Vertical Video Reframer](https://verticalvideoreframer.usefulweb.site/): Reframe video to 9:16, 1:1, 4:5 or 16:9 by cropping, a blurred background or bars. API: POST https://reelcraft.usefulweb.site/api/v1/tools/vertical-video-reframer/calculate · MCP tool `vertical_video_reframer` - [Video Compressor](https://videocompressor.usefulweb.site/): Shrink a video to a target size (two-pass) for e-mail, WhatsApp or Discord, or by quality. API: POST https://reelcraft.usefulweb.site/api/v1/tools/video-compressor/calculate · MCP tool `video_compressor` - [Video to GIF Creator](https://videotogifcreator.usefulweb.site/): Turn a video clip into a high-quality GIF or animated WebP with fps, width and dithering. API: POST https://reelcraft.usefulweb.site/api/v1/tools/video-to-gif-creator/calculate · MCP tool `video_to_gif_creator` - [Video to MP3 Extractor](https://videotoaudioextractor.usefulweb.site/): Extract a video’s soundtrack as MP3, WAV or FLAC, or copy the original audio losslessly. API: POST https://reelcraft.usefulweb.site/api/v1/tools/video-to-audio-extractor/calculate · MCP tool `video_to_audio_extractor` - [Audio Cutter & Merger](https://audiocuttermerger.usefulweb.site/): Trim audio, keep or remove ranges, fade in/out, or join up to 10 clips with crossfades. API: POST https://reelcraft.usefulweb.site/api/v1/tools/audio-cutter-merger/calculate · MCP tool `audio_cutter_merger` - [Audio Loudness Normalizer](https://audioloudnessnormalizer.usefulweb.site/): Measure LUFS and true peak, then normalise to Spotify, podcast or EBU R 128 targets. API: POST https://reelcraft.usefulweb.site/api/v1/tools/audio-loudness-normalizer/calculate · MCP tool `audio_loudness_normalizer` - [Universal Audio Converter](https://audioconverter.usefulweb.site/): Convert MP3, WAV, FLAC, Ogg, Opus, M4A and AIFF with bitrate and sample-rate control. API: POST https://reelcraft.usefulweb.site/api/v1/tools/audio-converter/calculate · MCP tool `audio_converter` - [MP3 Tag & Cover Editor](https://mp3tagcovereditor.usefulweb.site/): Edit MP3 ID3 tags (title, artist, album, year…) and add, replace or remove the cover. API: POST https://reelcraft.usefulweb.site/api/v1/tools/mp3-tag-cover-editor/calculate · MCP tool `mp3_tag_cover_editor` - [Subtitle Studio](https://subtitlestudio.usefulweb.site/): Convert SRT, VTT, ASS and SBV; shift, re-sync, fix overlaps, wrap lines and check CPS. API: POST https://reelcraft.usefulweb.site/api/v1/tools/subtitle-studio/calculate · MCP tool `subtitle_studio` - [Background Remover](https://backgroundremover.usefulweb.site/): Remove plain backgrounds from product photos and logos (colour-based, no AI) → transparent PNG. API: POST https://reelcraft.usefulweb.site/api/v1/tools/background-remover/calculate · MCP tool `background_remover` - [Batch Image Resizer & Cropper](https://batchimageresizer.usefulweb.site/): Resize or crop up to 30 images at once: exact size, fit, percentage or 1:1, 4:5, 16:9, 9:16. API: POST https://reelcraft.usefulweb.site/api/v1/tools/batch-image-resizer/calculate · MCP tool `batch_image_resizer` - [Batch Watermark Studio](https://batchwatermarkstudio.usefulweb.site/): Add a text or logo watermark to up to 30 images at once: position, tiling, opacity and angle. API: POST https://reelcraft.usefulweb.site/api/v1/tools/batch-watermark-studio/calculate · MCP tool `batch_watermark_studio` - [EXIF Inspector & Cleaner](https://exifinspectorcleaner.usefulweb.site/): See all photo metadata (EXIF, GPS, XMP, IPTC, MakerNotes) and download a cleaned copy. API: POST https://reelcraft.usefulweb.site/api/v1/tools/exif-inspector-cleaner/calculate · MCP tool `exif_inspector_cleaner` - [HEIC/RAW Image Converter](https://heicrawconverter.usefulweb.site/): Convert iPhone HEIC, AVIF and camera RAW (CR2, CR3, NEF, ARW, DNG…) to JPG, PNG or WebP. API: POST https://reelcraft.usefulweb.site/api/v1/tools/heic-raw-converter/calculate · MCP tool `heic_raw_converter` - [Image Compressor](https://imagecompressor.usefulweb.site/): Shrink JPG, PNG, WebP, AVIF or GIF images: convert, resize, strip metadata and compare sizes. API: POST https://reelcraft.usefulweb.site/api/v1/tools/image-compressor/calculate · MCP tool `image_compressor` - [Image Upscaler](https://imageupscaler.usefulweb.site/): Enlarge images 2×, 3× or 4× with classic Lanczos/Mitchell filters and sharpening (no AI). API: POST https://reelcraft.usefulweb.site/api/v1/tools/image-upscaler/calculate · MCP tool `image_upscaler` - [SVG Optimizer](https://svgoptimizer.usefulweb.site/): Shrink and sanitise SVG files: strip editor junk and scripts, round numbers, minify paths. API: POST https://reelcraft.usefulweb.site/api/v1/tools/svg-optimizer/calculate · MCP tool `svg_optimizer` - [C2PA Credentials Inspector](https://c2pacredentialsinspector.usefulweb.site/): Read C2PA Content Credentials in images and videos: actions, AI hints, signer and signature. API: POST https://reelcraft.usefulweb.site/api/v1/tools/c2pa-credentials-inspector/calculate · MCP tool `c2pa_credentials_inspector` ## Formats - Import: Video: MP4, MOV, MKV, WebM, AVI, MPEG-TS and more, Audio: MP3, WAV, FLAC, Ogg/Opus, M4A, AIFF, Images: JPEG, PNG, WebP, AVIF, GIF, TIFF, HEIC and camera RAW, Subtitles: SRT, WebVTT, ASS/SSA, SBV, SVG, Per-file sheet as CSV, Reelcraft project (.reelcraft.json), Project link (#project=…) - Export: Processed media files (single files or ZIP), Reelcraft project (.reelcraft.json), Report (print to PDF), CSV: library, checks, runs and sheet, Release plan (.ics calendar), Size chart (SVG, PNG), Share link for recipes and checks ## Limits - Processing runs on the usefulweb server through the media tools: it needs a connection, and the API allows about six media jobs per minute. - Upload limits per file follow the tools: 250 MB for video, 100 MB for audio, 30–50 MB for images. - There is no timeline editor with tracks, transitions or titles; cutting is by start and end times. - Previews depend on your browser: some formats (for example HEVC, MKV, RAW, HEIC) can be processed but not played or shown in every browser. - Project files and links do not contain the media files themselves. - Delivery presets are starting points; Reelcraft does not log in to or upload to any social platform. - The shot logger plays only formats your browser can decode (typically MP4/H.264 and WebM) and needs the video file in this browser; thumbnails are re-made from the file and are not part of shared projects.