Extract number from a line with awk/sed

Question

I have this string:

Stream #0:0: Video: vp6f, yuv420p, 852x478, 1638 kb/s, 25 tbr, 1k tbn, 1k tbc

and I would like to extract 25

Answer 1

Your current sed command would work well if you tweak the regex a bit:

sed -r 's/.+ (\S+) tbr,.+/\1/'