Video playback issue in Google Cloud

Label Studio Support
1

I’m currently running Label Studio version 1.19.0 on Google Cloud. The setup uses Cloud Run for hosting, along with Cloud SQL and Cloud Storage buckets. Cloud Run is behind a Load Balancer. Below is the relevant configuration for Label Studio:

DJANGO_DB = default
POSTGRE_NAME = label-studio
POSTGRE_HOST = <host>
POSTGRE_USER = <user>
POSTGRE_PASSWORD = <pass>
STORAGE_TYPE = gcs
STORAGE_GCS_BUCKET_NAME = <bucketName>
STORAGE_GCS_PROJECT_ID = <projId>
STORAGE_GCS_FOLDER = label-studio-media
USE_ENFORCE_CSRF_CHECKS = false

Videos that I import are correctly stored in the designated Cloud Storage bucket and folder. However, Label Studio is unable to retrieve and play them automatically.

I can confirm that:

  • Label Studio signs and provides a valid URL for the video.

  • The X-Accel-Redirect header is generated correctly and matches the expected Nginx template.

  • If I manually construct the $download_url using the same template, the video plays correctly in the browser, which rules out any codec issues.

Screenshot_1
Screenshot_11255×710 147 KB

Despite this, Label Studio fails to play the videos directly in the UI.

I have also tried setting USE_NGINX_FOR_UPLOADS and USE_NGINX_FOR_EXPORT_DOWNLOADS to both true and false, but the issue persists.

Thank you!

2

Working solution:

gcloud run deploy SERVICE \
  --container nginx \
  --image='heartexlabs/label-studio' \
  --args 'nginx'
  --set-env-vars APP_HOST=localhost \ # localhost because sidecars have same network space
  --port='8085' \ # port used by nginx
  --container label-studio \
  --image='heartexlabs/label-studio' \
  --set-env-vars DJANGO_DB=default \
  --set-env-vars POSTGRE_NAME=label-studio \
  --set-env-vars POSTGRE_HOST=<host> \
  --set-env-vars POSTGRE_USER=<user> \
  --set-env-vars POSTGRE_PASSWORD=<pass> \
  --set-env-vars STORAGE_TYPE=gcs \
  --set-env-vars STORAGE_GCS_BUCKET_NAME=label-studio \
  --set-env-vars STORAGE_GCS_PROJECT_ID=<proj> \
  --set-env-vars STORAGE_GCS_FOLDER=label-studio-media \
  --set-env-vars LABEL_STUDIO_PORT=8000 # port that NGINX will redirect traffic to

I think that we are not supposed to use label-studio without NGINX sidecar anymore. For more info refer to: helm template and docker-compose