[FFmpeg-user] How to display Close Caption on the screen

[Erik Gaudin]

When i open our internal stream with VLC, i can displayed Substitle. But
can't find how to do it with ffplay.exe (windows)

ffplay udp://@239.255.123.1:1234 -analyzeduration 200
I use the last argument for low latency.

Here what appear in DOS when start FFPLAY with URL only :

Input #0, mpegts, from 'udp://@239.255.179.6:5000':q=    0B f=0/0
  Duration: N/A, start: 86892.634178, bitrate: N/A
  Program 2672
    Stream #0:0[0xa72]: Video: hevc (Main) ([36][0][0][0] / 0x0024),
yuv420p(tv), 1280x720 [SAR 1:1 DAR 16:9], Closed Captions, 59.94 fps, 59.94
tbr, 90k tbn, 59.94 tbc
    Stream #0:1[0xa73](eng): Audio: aac_latm (LC) ([17][0][0][0] / 0x0011),
48000 Hz, stereo, fltp
    Stream #0:2[0xa74](fre): Audio: aac_latm (LC) ([17][0][0][0] / 0x0011),
48000 Hz, stereo, fltp


In VLC, CC are in Flux # 3  (Flux 0 = video, Flux 1 & 2 Audio track)




Erik Gaudin
Chef de projet
Société Radio-Canada (SRC)
Ingénierie Médias (Montréal)


Project Leader
Canadian Broadcasting Corporation (CBC)
Media Engineering (Montreal)


Tél. : 514-597-6586 (1-141-6586)
Cell. : 514-895-6586