# cat go.sh
#!/bin/bash

curl -X POST 'http://qa:qa@localhost:4444/wd/hub/session' -d '{
            "desiredCapabilities":{
                "browserName":"chrome",
                "version": "80.0",
                "platform":"ANY",
                "enableVNC": true,
  "enableVideo": true,
  "videoName":"foobarvid.mp4",
                "name": "this.test.is.launched.by.curl",
                "sessionTimeout": "120s"
            }
        }'

# bash go.sh
{"sessionId":"7bf13cee2dbb440e455655fd265ea7c0361da0d3de39654aa6f7331e62355fe6","status":0,"value":{"acceptInsecureCerts":false,"acceptSslCerts":false,"applicationCacheEnabled":false,"browserConnectionEnabled":false,"browserName":"chrome","chrome":{"chromedriverVersion":"80.0.3987.106 (f68069574609230cf9b635cd784cfb1bf81bb53a-refs/branch-heads/3987@{#882})","userDataDir":"/tmp/.com.google.Chrome.ywLvlD"},"cssSelectorsEnabled":true,"databaseEnabled":false,"goog:chromeOptions":{"debuggerAddress":"localhost:44399"},"handlesAlerts":true,"hasTouchScreen":false,"javascriptEnabled":true,"locationContextEnabled":true,"mobileEmulationEnabled":false,"nativeEvents":true,"networkConnectionEnabled":false,"pageLoadStrategy":"normal","platform":"Linux","proxy":{},"rotatable":false,"setWindowRect":true,"strictFileInteractability":false,"takesHeapSnapshot":true,"takesScreenshot":true,"timeouts":{"implicit":0,"pageLoad":300000,"script":30000},"unexpectedAlertBehaviour":"ignore","version":"80.0.3987.132","webStorageEnabled":true}}

# curl http://qa:qa@localhost:4444/video/7bf13cee2dbb440e455655fd265ea7c0361da0d3de39654aa6f7331e62355fe6

# curl http://qa:qa@localhost:4444/video/foobarvid.mp4
{"status":13,"value":{"message":"invalid request URL"}}

# curl http://qa:qa@localhost:4444/video/foobarvid
{"status":13,"value":{"message":"invalid request URL"}}