--- title: "Deploy Cap Screen Recording and Sharing" description: "Record and share screen videos with links and comments. Loom alternative." category: "Other" url: https://railway.com/deploy/cap-screen-recording-and-sharing --- # Deploy Cap Screen Recording and Sharing Record and share screen videos with links and comments. Loom alternative. **[Deploy Cap Screen Recording and Sharing on Railway](https://railway.com/template/cap-screen-recording-and-sharing)** Machine-readable deploy manifest (JSON, validated by TemplateCI): https://railway.com/deploy/cap-screen-recording-and-sharing/manifest.json - **Creator:** bento - **Category:** Other - **Total deploys:** 1 ## Template content ### Cap Media Server https://cdn.simpleicons.org/ffmpeg/007808 - **Image:** ghcr.io/capsoftware/cap-media-server@sha256:2dc90e055447026d7ff70656344cde74ec91b9d458a6050d9be6040a7074b62b - **Health check:** /health ### Bucket CORS https://cdn.jsdelivr.net/gh/homarr-labs/dashboard-icons/svg/aws.svg - **Image:** amazon/aws-cli:2.37.12 - **Start command:** `/bin/sh -c "aws s3api put-bucket-cors --bucket $BUCKET_NAME --endpoint-url $S3_ENDPOINT --region $S3_REGION --cors-configuration \"$CORS_CONFIGURATION\" && echo 'Bucket CORS configured for' $PUBLIC_ORIGIN"` ### Cap Maintenance https://cdn.simpleicons.org/curl/073551 - **Image:** curlimages/curl:8.22.0 - **Start command:** `/bin/sh -c "for job in recover-failed-video-processing finalize-stale-desktop-segments; do curl -sS --max-time 240 --retry 2 --retry-delay 10 --retry-connrefused -o /dev/null -w \"$job: HTTP %{http_code} in %{time_total}s\n\" -H \"Authorization: Bearer $CRON_SECRET\" \"$CAP_INTERNAL_URL/api/cron/$job\"; done"` ### MySQL https://devicons.railway.app/i/mysql.svg - **Image:** mysql:9.7.2 - **Start command:** `docker-entrypoint.sh mysqld --innodb-use-native-aio=0 --disable-log-bin --performance_schema=0 --innodb-buffer-pool-size=1G --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci --max-connections=1000` ### Cap https://cdn.jsdelivr.net/gh/CapSoftware/Cap@a32e4806b3004071effe00243e1dabd52bc7068c/apps/web/public/logos/logo-solo.svg - **Image:** ghcr.io/capsoftware/cap-web@sha256:8ee4cbd3fd87f88f538831aed06c954c525db9c2426a62abeaf0ca307c5e1ce9 - **Start command:** `/bin/sh -c "i=0; until nc -w 3 $MYSQL_WAIT_HOST 3306 /dev/null 2>&1; do i=$((i+1)); if [ $i -ge 150 ]; then echo 'MySQL not reachable after 5 minutes'; exit 1; fi; echo 'waiting for MySQL'; sleep 2; done; HOSTNAME=:: exec node apps/web/server.js"` - **Health check:** /api/status - **Public domain:** Yes ## Buckets - **Bucket** ## Documentation # Deploy and Host Cap with Railway Cap is an open-source screen recorder: record your screen and camera, get a shareable link right away, and collect comments on the video. This community template runs Cap's web app and ffmpeg media server on Railway with MySQL and a Railway Bucket for the recordings, so your videos stay in your own project. ## About Hosting Cap Cap is a Next.js web app that hosts the dashboard, share pages and the API used by Cap Desktop, plus a media server that runs ffmpeg for transcoding, thumbnails and previews. It needs MySQL for accounts and video metadata and S3-compatible storage for the files, which browsers and the desktop app upload to directly. This template uses Cap's official images pinned by digest, a Railway Bucket with the CORS rule browser uploads need, a private media server with a generated callback secret, a database wait so first boot does not race MySQL, and a small cron job that retries failed video processing. All secrets are generated at deploy time. ## Common Use Cases - Async updates and stand-ups recorded in a few minutes instead of long written reports - Bug reports that show the problem on screen, linked from your issue tracker - Onboarding, support and how-to walkthroughs on a URL you control - Recordings of customer or internal systems that must not leave your own infrastructure ## Dependencies for Cap Hosting - Cap web app (`ghcr.io/capsoftware/cap-web`, digest-pinned) - Cap media server with ffmpeg (`ghcr.io/capsoftware/cap-media-server`, digest-pinned) - MySQL (Railway MySQL 9.7) - S3-compatible object storage (Railway Bucket) - Optional: a Resend account for login and notification e-mails ### Deployment Dependencies - Cap self-hosting guide: https://cap.so/docs/self-hosting - Cap source and Docker Compose files: https://github.com/CapSoftware/Cap - Environment variable reference: https://github.com/CapSoftware/Cap/blob/main/packages/env/server.ts - Resend (e-mail API): https://resend.com - Railway Buckets: https://docs.railway.com/storage-buckets ### Implementation Details | Service | Image | Role | |---|---|---| | Cap | `ghcr.io/capsoftware/cap-web` (digest) | Web app and API on the public domain; runs database migrations at boot | | Cap Media Server | `ghcr.io/capsoftware/cap-media-server` (digest) | ffmpeg processing, private network only | | MySQL | `mysql:9.7.2` | Accounts, videos, comments (volume, no public proxy) | | Bucket | Railway Bucket | Recordings, thumbnails, exports | | Bucket CORS | `amazon/aws-cli:2.37.12` | One-shot job that sets the bucket CORS rule for Cap's domain | | Cap Maintenance | `curlimages/curl:8.22.0` | Cron every 15 minutes: retries failed or stalled video processing | **First login:** open the public URL and enter your e-mail. Until you add a Resend API key, the 6-digit login code is written to the Cap service logs; copy it from there. Before inviting others, set `RESEND_API_KEY` and `RESEND_FROM_DOMAIN` (Resend is an HTTP API, so it works on every Railway plan) and optionally restrict sign-ups with `CAP_ALLOWED_SIGNUP_DOMAINS`. In Cap Desktop, set the server URL to `https://{your-domain}`. **Custom domain:** add it to the Cap service, update `WEB_URL`, add `https://{your-domain}` to `CORS_CONFIGURATION` on Bucket CORS, and redeploy both. **Scaling:** give Cap Media Server more CPU and memory if many recordings are processed at once; it adapts its concurrency to the resources it sees. Keep Cap at one replica (it migrates at boot) and scale it vertically. **Versions:** Cap publishes rolling `latest` images, so this template pins image digests. To upgrade, set new digests on Cap and Cap Media Server together, back up MySQL, and redeploy; migrations run on boot. ### Why Deploy Cap on Railway? Railway runs the web app, media server, database and bucket as one project with private networking, managed volumes and usage-based billing. Video playback and uploads go straight to the bucket, so you get a self-hosted Loom alternative without managing servers, certificates or storage yourself. ## Similar templates - [Rocky Linux](https://railway.com/deploy/rocky-linux) — Hosted Rocky Linux 9 workspace with SSH and persistent storage. 🚀 - [Foundry Virtual Tabletop](https://railway.com/deploy/X5tR6G) — A Self-Hosted & Modern Roleplaying Platform - [Letta Code Remote](https://railway.com/deploy/letta-code-remote) — Run a Letta Code agent 24/7. No inbound ports, just deploy. Open this page in a browser: https://railway.com/deploy/cap-screen-recording-and-sharing