json jq request format - json

Question

I need help to extract data from this JSON file using jq.
The app flv then verify the streamname mystrame is active and extract meta.video.height
I did try lot of queries without success and my jq knowledge is poor.
{
"port": 1935,
"server_index": 0,
"applications": [{
"name": "hls",
"live": {
"streams": [{
"name": "donbosco",
"time": 2380739,
"bw_in": 2112440,
"bytes_in": 541618713,
"bw_out": 0,
"bytes_out": 0,
"bw_audio": 35544,
"bw_video": 2076888,
"clients": [{
"id": 453,
"address": "127.0.0.1",
"time": 2380959,
"flashver": "FMLE/3.0 (compatible; Lavf57.83.100)",
"dropped": 0,
"avsync": 28,
"timestamp": 2382635,
"publishing": true,
"active": true
}],
"records": [],
"meta": {
"video": {
"width": 1168,
"height": 720,
"frame_rate": 25,
"codec": "H264",
"profile": "High",
"level": 3.1
},
"audio": {
"codec": "AAC",
"profile": "LC",
"channels": 2,
"sample_rate": 16000
}
},
"nclients": 1,
"publishing": true,
"active": true
}],
"nclients": 1
},
"recorders": {
"count": 0,
"lists": []
}
},
{
"name": "flv",
"live": {
"streams": [{
"name": "mystream",
"time": 2382811,
"bw_in": 2059096,
"bytes_in": 541841549,
"bw_out": 2059096,
"bytes_out": 543351459,
"bw_audio": 35472,
"bw_video": 2023624,
"clients": [{
"id": 452,
"address": "127.0.0.1",
"time": 2382727,
"flashver": "LNX 9,0,124,2",
"dropped": 0,
"avsync": -12,
"timestamp": 2384520,
"publishing": false,
"active": true
},
{
"id": 451,
"address": "127.0.0.1",
"time": 2383031,
"flashver": "FMLE/3.0 (compatible; Lavf58.74.100)",
"dropped": 0,
"avsync": -12,
"timestamp": 2384520,
"publishing": true,
"active": true
}
],
"records": [],
"meta": {
"video": {
"width": 1168,
"height": 720,
"frame_rate": 25,
"codec": "H264",
"profile": "High",
"level": 3.1
},
"audio": {
"codec": "AAC",
"profile": "LC",
"channels": 2,
"sample_rate": 16000
}
},
"nclients": 2,
"publishing": true,
"active": true
}],
"nclients": 2
},
"recorders": {
"count": 0,
"lists": []
}
}
]
}

Answer 1

Are you asking for help with the command-line JSON processor jq or the JavaScript library jQuery? They are not the same. For jq, try
jq '
.applications
| map(select(.name == "flv"))[].live.streams
| map(select(.name == "mystream" and .active))[].meta.video.height
'
720
Demo