replace substring in lines using sed or grep

[esolve]

I have a file with a lot of lines, two of them are:

videoId: 'S2Rgr6yuuXQ'

var vid_seq=1;

in a shell script, I have two variables, for id, the value is always 11 characters/numbers

id='fsafsferii2'

id_seq=80

I want to modify these two lines with id and id_seq

videoId: 'fsafsferii2'

var vid_seq=80;

I used

sed -i 's/\(videoId: \).*\\1'${id}'/\2/' file

but there are errors, what is wrong with my script?

thanks

[watael]

hi,

$ cat input.file
videoId: 'S2Rgr6yuuXQ'
var vid_seq=1;
$ id='fsafsferii2'
$ sed "s/\(videoId: '\)[^']*/\1$id/" esolve.in.lf 
videoId: 'fsafsferii2'
var vid_seq=1;

the substitution is on the right hand side. the pattern is on the lhs.

[chebarbudo]

To make a very precise conditional replacement, here is my proposal:

id='fsafsferii2'
id_seq=80
sed -ri "s/^(videoId: )'[[:alnum:]]{11}'/\1'${id}'$/;s/^(var vid_seq)=[0-9]+$/\1=${id_seq}'/" file