[Vcon] vCon core issue #3B/C: parties not in the recording

[Dan Petrie <[e-mail]>]

Issue 3B/C) When we have a recordings for each party (or group of parties) we end up with a Dialog Object for each recording.  The current  Dialog Object defines how to label the parties in the recording (whether they speak or not).  It does not define how to specify parties that are in a separate recording/Dialog Object, but in the same call.

Lets say we have a call with 3 parties and the audio for each party is recorded in a separate 1 channel audio file.  So we have 3 Dialog Objects, one for the recording for each party's audio.  The first Dialog Object contains the recording for party 0.
We have:{
  "type": "recording,
   "parties": [0],   "body": single channel audio file...}

but this does not show that parties 1 and 2 were also part of the call.  There will be the other dialogs for the recordings for parties 1 and 2:
{  "type": "recording,
   "parties": [1],
...},
{  "type": "recording,
   "parties": [2],...}
However there is no indication they were all in the same call.

If for the first dialog we put:   "parties": [0, 1, 2],As currently defined in the I-D, this would indicate that the audio for all three parties was mixed into the single channel audio record.If we did:   "parties": [0, [1, 2]],
As currently defined in the I-D, this would indicate that we have a two channel recording.  The first channel for party 0 and the second channel for parties 1 and 2.  This would be incorrect for a single channel recording.

Option 1:
Do we create an "other_parties" (name up for suggestions) field to list those not recorded.
{
  "type": "recording,
   "parties": [0],   "other_parties": [1, 2],   "body": single channel audio file...}
Option 2:We label all of the dialogs as being part of the same call (e.g. "call_uuid" see example below) and make the consumer of the data hunt through all of the dialogs, find which ones are all the same call and collect the parties from those dialogs? We may need this concept of call labeling to solve other problems (see issue 3D), the collecting the parties from all of the dialogs for the same call seems inconvenient.
"dialog": [  {
    "type": "recording,
     "parties": [0],
     "call_uuid": "12345",     "body": single channel audio file  ...  },
  {    "type": "recording,
     "parties": [1],     "call_uuid": "12345",  ...  },
  {    "type": "recording,
     "parties": [2],     "call_uuid": "12345",  ...  }]

Option 3:   Do both.  Set other_parties and call_uuid.
Other options?

Cheers,Dan