MiroTalk SFU: Recording not possible?

[MiroTalk]

@nebulon @James @shrey

Implemented in MiroTalk SFU v2.0.14 — Docker image is building now (available in ~1 hour).

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For Cloudron deployments, server-side recording should now work using the following configuration:

Recording

RECORDING_ENABLED=true
RECORDING_DIR='../data/rec'            # Path relative to /app/code → resolves to /app/data/rec
RECORDING_MAX_FILE_SIZE=1073741824     # Max file size in bytes (default: 1GB)

RTMP

RTMP_DIR='../data/rtmp'                # Path relative to /app/code → resolves to /app/data/rtmp

Note

If the target directories do not exist, MiroTalk SFU will automatically create them at runtime, just like before.

Cloudron automatically mounts /app/data, so using ../data/... ensures the app writes to the persistent, writable directory.

[nebulon]

New package is out. Thanks for all the work @mirotalk-57bab571 and being so proactive here!

[MiroTalk]

@nebulon said in MiroTalk SFU: Recording not possible?:

New package is out. Thanks for all the work @mirotalk-57bab571 and being so proactive here!

Good! I’m always here to help. Thanks to Cloudron for trusting MiroTalk and supporting us! By the way, I love the new Cloudron UI v.9.0.10, it looks amazing!

[MiroTalk]

PS: Thanks also to @James for his IT support and excellent debugging and suggestions.

[shrey]

Hi @nebulon @mirotalk-57bab571
So, i'm still unable to boot up the app after setting RECORDING_ENABLED=true :

Nov 15 09:36:54 node:fs:1364
Nov 15 09:36:54 const result = binding.mkdir(
Nov 15 09:36:54 ^
Nov 15 09:36:54 2025-11-15T04:06:54Z
Nov 15 09:36:54 Error: ENOENT: no such file or directory, mkdir '/app/code/app/rec/'
Nov 15 09:36:54 at Object.mkdirSync (node:fs:1364:26)
Nov 15 09:36:54 at Object.<anonymous> (/app/code/app/src/Server.js:280:12)
Nov 15 09:36:54 at Module._compile (node:internal/modules/cjs/loader:1554:14)
Nov 15 09:36:54 at Object..js (node:internal/modules/cjs/loader:1706:10)
Nov 15 09:36:54 at Module.load (node:internal/modules/cjs/loader:1289:32)
Nov 15 09:36:54 at Function._load (node:internal/modules/cjs/loader:1108:12)
Nov 15 09:36:54 at TracingChannel.traceSync (node:diagnostics_channel:322:14)
Nov 15 09:36:54 at wrapModuleLoad (node:internal/modules/cjs/loader:220:24)
Nov 15 09:36:54 at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:170:5)
Nov 15 09:36:54 at node:internal/main/run_main_module:36:49 {
Nov 15 09:36:54 errno: -2,
Nov 15 09:36:54 code: 'ENOENT',
Nov 15 09:36:54 syscall: 'mkdir',
Nov 15 09:36:54 path: '/app/code/app/rec/'
Nov 15 09:36:54 }
Nov 15 09:36:54 2025-11-15T04:06:54Z
Nov 15 09:36:54 Node.js v22.14.0
Nov 15 09:36:54 \

[MiroTalk]

@shrey said in MiroTalk SFU: Recording not possible?:

So, i'm still unable to boot up the app after setting RECORDING_ENABLED=true

Forget the previous env configuration. In the latest Cloudron commit, recording is enabled by default, and the app/data path now appears to be automatically resolved as well.

[shrey]

@mirotalk-57bab571

I restarted the updated app, but i still get only this:

No rec folder available, and no default recording taking place.

[shrey]

@mirotalk-57bab571

It seems like 2 separate updated packages have been released for this.
Just came across the 2nd one and updated the app again.

1. The rec folder is now available in /app/data/
2. All recordings are still being saved on the local device only. No server-side recording. No S3 recording.

[james]

Hello @shrey
I have just updated my Mirotalk SFU app and now the recordings are stored inside the Mirotalk SFU app in /app/data/rec/.
Please share your /app/data/env file.
With the updated app and a fresh installed app the recording works.
In a meeting I can do:

ls -lah /app/data/rec/
total 5.2M
drwxr-xr-x 2 cloudron cloudron 4.0K Nov 15 09:46 .
drwxr-xr-x 3 cloudron cloudron 4.0K Nov 15 09:44 ..
-rw-r--r-- 1 cloudron cloudron 5.2M Nov 15 09:46 Rec_09598YoungSpid_2025_11_15_10_45_32_e0005370-10dd-4487-a68e-cff4d94f274d.webm

[shrey]

Hi @james , thanks for the screenshots. I can now see that there's a "Save on server" option in the UI, and it's working for me as well.

Now, just S3 is left to work.
My env file ->

# Recording
RECORDING_ENABLED=true                           # Enable recording functionality (true|false)
RECORDING_UPLOAD_TO_S3=false                      # Upload recording to AWS S3 bucket [true/false]

# AWS S3 Configuration  
AWS_S3_ENABLED=true                              # Enable AWS S3 storage (true|false)  
AWS_S3_BUCKET_NAME=<bucket-name>                       # Name of your S3 bucket (must exist)  
AWS_ACCESS_KEY_ID=<key-id>                                # AWS Access Key ID (leave empty for IAM roles)  
AWS_SECRET_ACCESS_KEY=<key-secret>                            # AWS Secret Access Key (leave empty for IAM roles)  
AWS_REGION=<region>                                   # AWS region (e.g., us-east-2, eu-west-2)  
AWS_S3_ENDPOINT=https://<region>.digitaloceanspaces.com

Note: Although i didn't find the "AWS_S3_ENDPOINT" key in the env template, i configured it because it seems to work with most S3 client libraries, and is a necessity to be able to connect to S3 spaces other than AWS.

[james]

Hello @shrey
The library used in MiroTalk SFU for AWS/S3 is aws-sdk/client-s3.
It seems MiroTalk SFU does not have the option to configure the endpoint.
From the MiroTalk SFU Code handling the configuration:

https://github.com/miroslavpejic85/mirotalksfu/blob/b2a41e597610524b259097d2e1b52674dda631c0/app/src/config.template.js#L948-L954

        aws: {
            enabled: process.env.AWS_S3_ENABLED === 'true',
            accessKeyId: process.env.AWS_ACCESS_KEY_ID || 'your-access-key-id',
            secretAccessKey: process.env.AWS_SECRET_ACCESS_KEY || 'your-secret-access-key',
            region: process.env.AWS_REGION || 'us-east-2',
            bucket: process.env.AWS_S3_BUCKET || 'mirotalk',
        },

Also in the server.js where the S3Client is initialized, the endpoint is never configured, thus using the default, resolving the endpoint from the AWS_REGION.
https://github.com/miroslavpejic85/mirotalksfu/blob/b2a41e597610524b259097d2e1b52674dda631c0/app/src/Server.js#L297-L303

const s3Client = new S3Client({
    region: config?.integrations?.aws?.region, // Set your AWS region
    credentials: {
        accessKeyId: config?.integrations?.aws?.accessKeyId,
        secretAccessKey: config?.integrations?.aws?.secretAccessKey,
    },
});

So we need to ask @mirotalk-57bab571 to add the option to configure the endpoint as well.
Adding to that, when a non AWS endpoint is used, the option forcePathStyle: true might also be needed for the best compatibility with e.g. MinIO and most S3-compatible systems.

---

@mirotalk-57bab571
It is the weekend, please don't feel pressured or forced to work on the weekend.
Would it be possible to add the option to configure the S3Client endpoint config and S3Client forcePathStyle config?

[MiroTalk]

@james said in MiroTalk SFU: Recording not possible?:

Would it be possible to add the option to configure the S3Client endpoint config and S3Client forcePathStyle config?

So the goal is to avoid hard-coding support only for AWS S3.
To extend the configuration so it also supports any S3-compatible storage (MinIO, Wasabi, DigitalOcean Spaces, etc.), i need to add the following to the .env file:

AWS_S3_ENDPOINT=                     # e.g., http://localhost:9000 for MinIO
AWS_S3_FORCE_PATH_STYLE=false        # Set to true for S3-compatible services

Then expose these values in config.js:

aws: {
    // ...
    endpoint: process.env.AWS_S3_ENDPOINT || '',
    forcePathStyle: process.env.AWS_S3_FORCE_PATH_STYLE === 'true',
},

Finally, update the S3 client configuration in Server.js:

const s3Client = new S3Client({
    // ...
    endpoint: config?.integrations?.aws?.endpoint || undefined,
    forcePathStyle: config?.integrations?.aws?.forcePathStyle === true,
});

With this setup, the application continues to work with AWS S3 as it currently does, but can also switch to any S3-compatible service simply by adjusting environment variables and no additional code changes required.

Sounds good to me! @James just confirm.

[james]

Hello @mirotalk-57bab571

LGTM!
Maybe adding a doc string in the env to AWS_S3_ENDPOINT that if left empty it will use region to resolve it automatically.

[MiroTalk]

Implemented in MiroTalk SFU v.2.0.16

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• Build

[james]

I am running the following env file:

All config options at https://github.com/miroslavpejic85/mirotalksfu/blob/main/.env.template
PRESENTERS=admin@cloudron.local
EMAIL_SEND_TO=admin@cloudron.local
STATS_ENABLED=false
RECORDING_UPLOAD_TO_S3=true
AWS_S3_ENABLED=true
AWS_S3_ENDPOINT=https://minio-api.cloudron.dev
AWS_S3_BUCKET_NAME=sfu
AWS_S3_FORCE_PATH_STYLE=true
AWS_ACCESS_KEY_ID=LJQVOTFR3DZDG1QPOL0Y
AWS_SECRET_ACCESS_KEY=j6w8j73VF8NE9wzsi4aupJICTrn45I0MKIoYUCk9

This access key and secret have full access to all buckets.
Buckets are backup and sfu.
The backup bucket I used for testing for Cloudron Backups, which works.

But with MiroTalk SFU there seems to be an issue:

Nov 16 16:43:28 [11/16/2025, 15:43:28:847] [Server] [Upload] Saved Rec_13172BasicZebra_2025_11_16_16_43_23_f6ee8290-dcb8-44ec-b30e-dab24b4bae36.webm (0.07 MB) in 0.00s ''
Nov 16 16:43:30 [11/16/2025, 15:43:30:316] [Server] Rec Finalization error 'The specified bucket does not exist'

Without the AWS_S3_FORCE_PATH_STYLE variable I get:

Nov 16 16:44:56 [11/16/2025, 15:44:56:198] [Server] Rec Finalization error 'getaddrinfo ENOTFOUND mirotalk.minio-api.cloudron.dev'

Which would suggest that AWS_S3_BUCKET_NAME which I set to sfu is getting ignored and default mirotalk is used?
So I add the AWS_S3_FORCE_PATH_STYLE=true again and create a bucket named mirotalk.
Confirmed working.

Nov 16 16:49:29 [11/16/2025, 15:49:29:552] [Server] [Upload] Saved Rec_13172BasicZebra_2025_11_16_16_49_23_3e9ab0ce-5148-43b3-a827-e524537fd01b.webm (0.95 MB) in 0.01s ''
Nov 16 16:49:29 [11/16/2025, 15:49:29:702] [Server] [Upload] Saved Rec_13172BasicZebra_2025_11_16_16_49_23_3e9ab0ce-5148-43b3-a827-e524537fd01b.webm (0.20 MB) in 0.00s ''
Nov 16 16:49:30 [11/16/2025, 15:49:30:586] [Server] [Rec Finalization] done Rec_13172BasicZebra_2025_11_16_16_49_23_3e9ab0ce-5148-43b3-a827-e524537fd01b.webm in 0.32s {
Nov 16 16:49:30 success: true,
Nov 16 16:49:30 fileName: 'Rec_13172BasicZebra_2025_11_16_16_49_23_3e9ab0ce-5148-43b3-a827-e524537fd01b.webm',
Nov 16 16:49:30 key: 'recordings/13172BasicZebra/Rec_13172BasicZebra_2025_11_16_16_49_23_3e9ab0ce-5148-43b3-a827-e524537fd01b.webm'
Nov 16 16:49:30 }
Nov 16 16:49:30 [11/16/2025, 15:49:30:587] [Server] [Upload] File /app/data/rec/Rec_13172BasicZebra_2025_11_16_16_49_23_3e9ab0ce-5148-43b3-a827-e524537fd01b.webm removed from local after S3 upload ''

/app/data/env is:

All config options at https://github.com/miroslavpejic85/mirotalksfu/blob/main/.env.template
PRESENTERS=admin@cloudron.local
EMAIL_SEND_TO=admin@cloudron.local
STATS_ENABLED=false
RECORDING_UPLOAD_TO_S3=true
AWS_S3_ENABLED=true
AWS_S3_ENDPOINT=https://minio-api.cloudron.dev
AWS_S3_BUCKET_NAME=sfu
AWS_S3_FORCE_PATH_STYLE=true
AWS_ACCESS_KEY_ID=LJQVOTFR3DZDG1QPOL0Y
AWS_SECRET_ACCESS_KEY=j6w8j73VF8NE9wzsi4aupJICTrn45I0MKIoYUCk9

And I created a bucket named mirotalk.

[james]

I found the offending lines:

https://github.com/miroslavpejic85/mirotalksfu/blob/e59b24bb37a7b19560a03de1a5abb5fb79a2c6b4/app/src/config.template.js#L961

            bucket: process.env.AWS_S3_BUCKET || 'mirotalk',

https://github.com/miroslavpejic85/mirotalksfu/blob/e59b24bb37a7b19560a03de1a5abb5fb79a2c6b4/app/src/Server.js#L1118

            const bucket = config?.integrations?.aws?.bucket;

This would mean the env would be AWS_S3_BUCKET and not AWS_S3_BUCKET_NAME.
Confirmed with this env

All config options at https://github.com/miroslavpejic85/mirotalksfu/blob/main/.env.template
PRESENTERS=admin@cloudron.local
EMAIL_SEND_TO=admin@cloudron.local
STATS_ENABLED=false
RECORDING_UPLOAD_TO_S3=true
AWS_S3_ENABLED=true
AWS_S3_ENDPOINT=https://minio-api.cloudron.dev
AWS_S3_BUCKET_NAME=sfu
AWS_S3_BUCKET=sfu
AWS_S3_FORCE_PATH_STYLE=true
AWS_ACCESS_KEY_ID=LJQVOTFR3DZDG1QPOL0Y
AWS_SECRET_ACCESS_KEY=j6w8j73VF8NE9wzsi4aupJICTrn45I0MKIoYUCk9

PR created @mirotalk-57bab571 https://github.com/miroslavpejic85/mirotalksfu/pull/228

[MiroTalk]

@james said in MiroTalk SFU: Recording not possible?:

PR created @mirotalk-57bab571 https://github.com/miroslavpejic85/mirotalksfu/pull/228

Ops, you’re right, good catch! PR accepted. Thanks for confirming that everything works as expected. MiroTalk SFU can now upload recordings to any S3-compatible storage, not just AWS!

[MiroTalk]

By the way, I opened an issue for MinIO here: https://github.com/minio/minio/issues/21694

It would be great if MinIO could properly show previews for .webm videos as well.
When I store the same recording in a rec folder in Cloudron, the video preview works correctly.
However, when the file is stored in MinIO storage, the preview does not work.

It looks like the MIME type is not detected correctly, which causes the video tag to use:

type="video/mp4"

even though the file is actually a .webm.
This prevents browsers from playing the video.

Proper support for serving .webm with Content-Type: video/webm would fix the issue.

[MiroTalk]

@shrey said in MiroTalk SFU: Recording not possible?:

AWS_S3_ENDPOINT=https://<region>.digitaloceanspaces.com

Just out of curiosity, on DigitalOcean, the web video preview work there?

I'm going also to add also the correct contentType when the recording is uploaded to any S3-compatible storage to avoid MIME-type issues.

[shrey]

@MiroTalk said in MiroTalk SFU: Recording not possible?:

Just out of curiosity, on DigitalOcean, the web video preview work there?

No idea. I'm yet to figure out why uploading to S3 (DigitalOcean Spaces) is not working for me.