The 35-year-old midfielder has played 115 times for England, second behind only goalkeeper Peter Shilton's 125 from 1970-90.
Beckham missed out on a fourth World Cup after tearing an Achilles' tendon in March while on loan to AC Milan from the Los Angeles Galaxy to stay in shape for England during the Major League Soccer offseason.
He resumed training today in Los Angeles.
Ahead of England's friendly against Hungary, Capello told British broadcaster ITV that Beckham is "probably a bit too old" to play for England again, adding "thank you, David".
Beckham, who began his career at Manchester United in 1992, made his England debut against Moldova in September 1996.
The low point of his international career came at his first World Cup in 1998 when he was sent off for petulantly kicking at Argentina midfielder Diego Simeone. England lost the round-of-16 match and some England fans hanged effigies of Beckham.
Beckham managed to bounce back and captained the team at the 2002 World Cup under coach Sven-Goran Eriksson.
Beckham tearfully relinquished the England captaincy after the 2006 tournament, when England reached the quarterfinals for the second successive time.
He was then initially dropped by coach Steve McClaren, but was restored as England's qualifying campaign for the 2008 European championship faltered.
McClaren was fired in November, 2008, after England failed to reach Euro 2008.
Despite initially falling out of favour under Capello before being restored to the team when both were at Real Madrid, Beckham's international career survived when the Italian coach took over from McClaren.
Beckham often only appeared as a late substitute but played a role in 16 of the 21 matches under Capello before he was injured three months before the 2010 World Cup in South Africa.
Such was his enduring influence in the camp that Beckham was taken to the World Cup in a non-playing role by Capello.
He wasn't there in an official coaching role despite often appearing on the training pitch.
