Closed Captions when streaming Live TV

[uspino]

I use NextPVR as a server for live TV, and it works great on many apps. I use these arguments:

<TranscodeArgs>-y -v 0 -i [SOURCE] -f mpegts -vf yadif=1 -acodec ac3 -ab 96k -ar 44100 -ac 2 -s [RESOLUTION] -vcodec h264_qsv -crf 23 -g 120 -preset veryslow -b [BITRATE] -maxrate [BITRATE] -aspect [ASPECT] -async 2 [TARGET]</TranscodeArgs>

And ffmpeg reports this:

Stream #0:0[0x1aaf], 84, 1/90000: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv), 1920x1080 [SAR 1:1 DAR 16:9], Closed Captions, max. 15000 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
Stream #0:1[0x1ab0](eng), 93, 1/90000: Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 5.1(side), fltp, 448 kb/s
Stream #0:2[0x1ab2], 0, 1/90000: Unknown: none ([5][0][0][0] / 0x0005)
Stream #0:3[0x1ab4], 0, 1/90000: Unknown: none ([5][0][0][0] / 0x0005)

Now, is there a way to add closed captions to the (mp4) ts ffmpeg transcoded file, the same way Handbrake does when adding “--subtitle 1” to the command line arguments?