RTMS transcripts delay

Realtime Media Streams
1

Hi Team,

I’m experiencing a delay in receiving transcripts from RTMS. The transcripts are arriving approximately 20–30 seconds after they’re spoken. Have there been any recent changes or updates to RTMS that could be causing this?

2

Hi Team,

Would really appreciate if someone could respond if there is any issue with the RTMS server or not ?
I am seeing sometime delay of around of 20 seconds for “Hello” message itself.

However, keep alive messages request from RTMS websocket server are received nicely every 10 seconds.

Thanks!

3

From Zoom RTMS WebSocket message (msg_type: 5 - MediaDataTranscript):

{
  "content": {
    "start_time": 1784684068584,      // Zoom's value (milliseconds)
    "end_time": 1784684070434,        // Zoom's value (milliseconds)
    "timestamp": 1784684086022355,    // Zoom's value (microseconds)
    "user_name": "Amit",
    "data": "Good morning."
  }
}

Speech Start Time (from Zoom):
   start_time = 1784684068584 ms
   Human time: 2026-07-22 01:34:28.584 UTCSpeech End Time (from Zoom):
   end_time = 1784684070434 ms
   Human time: 2026-07-22 01:34:30.434 UTC

   Speech Duration = end_time - start_time
                   = 1784684070434 - 1784684068584
                   = 1850 ms
                   = 1.85 seconds ✓

Zoom Transcription Complete (from Zoom):
   timestamp = 1784684086022355 µs = 1784684086022 ms
   Human time: 2026-07-22 01:34:46.022 UTC

   Zoom Processing Delay = timestamp - end_time
                         = 1784684086022 - 1784684070434
                         = 15588 ms
                         = 15.59 seconds ⚠️

 Message Received by Client:
   received_at = 1784684086149 ms
   Human time: 2026-07-22 01:34:46.149 UTC

   Network Delay = received_at - timestamp
                 = 1784684086149 - 1784684086022
                 = 127 ms
                 = 0.13 seconds ✓

   Total End-to-End Delay:
   total_delay = received_at - end_time
               = 1784684086149 - 1784684070434
               = 15715 ms
               = 15.71 seconds

Please let me know if anyone else is also facing the same issue. This a blocker.

4

@amanda-recallai Could you please help me here ? Any suggestion ?

5

@Amit11 do you have the stream id and meeting UUID captured for this?

6

Here is the meetingId for the same - 656 812 4593
I will capture the fresh logs with meeting UUID and stream id and send it across.

7

Issue is consistently reproducible. Please let me know if you require more details.

meetingUUID - uhFnYgfjTfizNf5hVkl9CA==
streamId - 28bd4c02ab94447287beca8c612f547f

{“endTime”:1784692566446,“len”:13,“level”:“info”,“msg”:“Received final transcript”,“networkDelay”:“0.14s”,“receivedAt”:1784692584222,“speechDuration”:“1.69s”,“startTime”:1784692564756,“text”:“Good morning.”,“time”:“2026-07-22T03:56:24Z”,“timestamp”:1784692584087,“totalDelay”:“17.78s”,“transcriptDelta”:“20.89s”,“transcriptRate”:“0.05/s”,“userName”:“Amit Katyal”,“zoomDelay”:“17.64s”}

8

thank you for the prompt response @Amit11 , let me work on it

9

Thanks. Really appreciate your support !

10

@Amit11 I’ll PM you for more logs

11

We have rolled out an update which improves the latency associated with transcript delay on RTMS