[FFmpeg-user] 608/ 708 Closed Captions output with ffmpeg and Decklink

Devin Heitmueller devin.heitmueller at ltnglobal.com
Tue Jan 4 17:10:15 EET 2022

On Tue, Jan 4, 2022 at 9:43 AM Matt C <asperi at hotmail.com> wrote:
> Looking closer I see your note on pix_fmt, I will try with yuv422p10
> ffmpeg -i /home/matt/VideoTests/1080i_TS_SampleFileCC.mpg-pix_fmt -ar:a 48000 yuv422p10 -s 1920x1080 -r 30000/1001 -f decklink -a53cc 0 -map 0 -vcodec v210 "DeckLink SDI 4K"

So the vast majority of those args are unnecessary given the file.
Assuming you've properly built with libklvanc support it should play
just fine including captions using:

ffmpeg -i /home/matt/VideoTests/1080i_TS_SampleFileCC.mpg-pix_fmt -f
decklink -vcodec v210 "DeckLink SDI 4K"

Did you add "--enable-libklvanc" to the ./configure line?  That is
needed for the libklvanc library to be included in ffmpeg.


Devin Heitmueller, Senior Software Engineer
LTN Global Communications
o: +1 (301) 363-1001
w: https://ltnglobal.com  e: devin.heitmueller at ltnglobal.com

More information about the ffmpeg-user mailing list