root@SRX550-TMT> show services application-identification counter 
pic: 0/0
Counter type Value
Unknown applications 77
Encrpted unknown applications 0
Cache hits 160
Cache misses 3968
Client-to-server packets processed 4634
Server-to-client packets processed 1435
Client-to-server bytes processed 651527
Server-to-client bytes processed 1267490
Client-to-server encrypted packets processed 0
Server-to-client encrypted packets processed 0
Client-to-server encrypted bytes processed 0
Server-to-client encrypted bytes processed 0
Sessions bypassed due to resource allocation failure 0
Segment case 1 - New segment to left 0
Segment case 2 - New segment overlap right 15
Segment case 3 - Old segment overlapped 0
Segment case 4 - New segment overlapped 0
Segment case 5 - New segment overlap left 0
Segment case 6 - New segment to right 3

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root@SRX550-TMT> show services application-identification application detail junos:YOUTUBE-HD 
Application Name: junos:YOUTUBE-HD                                            
Application type: YOUTUBE_HD                                                  
Description: Youtube HD classification ensures that the user is watching a High Definition video (at least 720 lines).
Application ID: 558     
Disabled: No                 
Number of Parent Group(s): 0       
Application Tags:
    risk                  : 2                                                 
    subcategory           : divers                                            
    category              : Web                                               
Over List:
    YOUTUBE     / 240        
Port Mapping:
    Default ports: N/A
Signature:
    Port range: N/A
    Client-to-server
    Order: 5        

root@SRX550-TMT> show services application-identification application detail junos:YOUTUBE       
Application Name: junos:YOUTUBE                                               
Application type: YOUTUBE                                                     
Description: This signature detects video streaming from Youtube.com, a video sharing site.
Application ID: 240     
Disabled: No                 
Number of Parent Group(s): 1       
Application Groups:
    junos:web:multimedia:web-based               
Application Tags:
    characteristic        : Loss of Productivity                              
    characteristic        : Bandwidth Consumer                                
    risk                  : 2                                                 
    subcategory           : Multimedia                                        
    category              : Web                                               
Over List:
    SSL         / 199        
    RTMP        / 337        
    HTTPS       / 68         
    HTTP        / 67         
    APPLE_HLS   / 1799       
Alias List:
    junos:YOUTUBE-STREAM
Port Mapping:
    Default ports: N/A
Signature:
    Port range: N/A
    Client-to-server
    Order: 2        

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root@SRX550-TMT> show security application-firewall rule-set Black-List    
Rule-set: Black-List
    Rule: web
        Dynamic Applications: junos:STREAMATE, junos:STREAMAUDIO, junos:YOUTUBE-HD, junos:YOUTUBE-COMMENT
        Dynamic Application Groups: junos:web:multimedia:video-streaming
        SSL-Encryption: any
        Action:deny
        Number of sessions matched: 0
        Number of sessions redirected: 0
Default rule:permit
        Number of sessions matched: 1214
        Number of sessions redirected: 0
Number of sessions with appid pending: 0