Jq: Error putting multiple value of array on a single line?

[higkoo]

Describe the bug
I want read some attribute value from a video file into csv, but multi value in array will get error.

To Reproduce
mediainfo -f --Output=JSON higkoo.flv | jq -r '[."media"."@ref", ."media"."track"[] | select(."@type"=="General")."FileExtension"] | @csv'

jq: error (at :72): Cannot index string with string "@type"

mediainfo -f --Output=JSON higkoo.flv | jq -r '[."media"."@ref"], [."media"."track"[] | select(."@type"=="General")."FileExtension"] | @csv'

"higkoo.flv"
"flv"

Exec success, but value do not in One Line. Need One file attributes in One Line.
Then this script will read many many files, into csv to dispaly. Expected：

"higkoo.flv","flv"

Source String to Test:

{
"media": {
"@ref": "higkoo.flv",
"track": [{
"@type": "General","VideoCount": "1","AudioCount": "1",
"FileExtension": "flv","Format": "Flash Video",
"FileSize": "739869","Duration": "2.233",
"OverallBitRate": "2650673","FrameRate": "30.000","FrameCount": "67",
"File_Modified_Date": "UTC 2016-07-12 19:01:52",
"File_Modified_Date_Local": "2016-07-13 03:01:52",
"Encoded_Application": "Lavf56.40.101"
},{
"@type": "Video","Format": "AVC","Format_Profile": "Main",
"Format_Level": "3.1","Format_Settings_CABAC": "Yes",
"Format_Settings_RefFrames": "4","CodecID": "7",
"Duration": "2.233","BitRate": "2500000",
"Width": "1280","Height": "720","Sampled_Width": "1280",
"Sampled_Height": "720","PixelAspectRatio": "1.000",
"DisplayAspectRatio": "1.778","FrameRate_Mode": "CFR",
"FrameRate": "30.000","FrameCount": "67","ColorSpace": "YUV",
"ChromaSubsampling": "4:2:0","BitDepth": "8",
"ScanType": "Progressive","Delay": "0.000","StreamSize": "697812",
"Encoded_Library": "x264 - core 142","Encoded_Library_Name": "x264",
"Encoded_Library_Version": "core 142"
},{
"@type": "Audio","Format": "AAC",
"Format_AdditionalFeatures": "LC",
"CodecID": "10-2","Duration": "2.229",
"BitRate": "156250","Channels": "2",
"ChannelPositions": "Front: L R","ChannelLayout": "L R",
"SamplesPerFrame": "1024","SamplingRate": "44100",
"SamplingCount": "98299","FrameRate": "43.066",
"Compression_Mode": "Lossy","Delay": "0.000",
"Delay_Source": "Container","StreamSize": "43535",
"StreamSize_Proportion": "0.05884"
}]} }

Expected

Victory.Korea.avi,avi,67453106,206.76,720,480,1.333,25,2373150,XviD,MEncoder,2,MPEG
Audio,224000

Environment

• macOS Catalina 10.15.2
  
  
  
  • MediaInfoLib - v19.09
  
  
• jq-1.6

Additional
I want output multi values when use jq one time, please tell me howto.
Many thank.

[higkoo]

mediainfo -f --Output=JSON higkoo.flv | jq '[."media"."@ref",."media"."@ref"]'

[
"higkoo.flv",
"higkoo.flv"
]

mediainfo -f --Output=JSON higkoo.flv | jq '[."media"."track"[] | select(."@type"=="General")."FileExtension"],[."media"."track"[] | select(."@type"=="General")."FileExtension"]'

[
"flv"
]
[
"flv"
]

mediainfo -f --Output=JSON higkoo.flv | jq '[."media"."track"[] | select(."@type"=="General")."FileExtension" , ."media"."track"[] | select(."@type"=="General")."FileExtension"]'

jq: error (at :65): Cannot index string with string "@type"

Expected

[
"flv",
"flv"
]

Need some value into a array then use "| @csv" output a csv file.

[Alanscut]

mediainfo -f --Output=JSON higkoo.flv | jq '[."media"."track"[] | select(."@type"=="General")."FileExtension" , ."media"."track"[] | select(."@type"=="General")."FileExtension"]'

jq: error (at :65): Cannot index string with string "@type"

Expected

[
"flv",
"flv"
]

mediainfo -f --Output=JSON higkoo.flv | jq '[."media"."track"[] | 
select(."@type"=="General")."FileExtension"] + [."media"."track"[] | 
select(."@type"=="General")."FileExtension"]'

can output your expected result.