I have input value "
<iframe>....</iframe>" (param 'post_content'). When i execute wp_insert_post, function cut off my tag.
How to disable HTML filter in wp_insert_post ?
You could use call kses_remove_filters() before saving and call kses_init_filters() afterwards, but pay attention it will also remove filtering from title, excerpt and comments, So what you should do is just unset the content filters.
and after the post is saved