Warning Indicator Display in Movie Recording ... to [View Assist . ... you use a card with a slow ... ... written to the card (remaining capacity ... the slower the card is. If the card has a fast ... First, record a few test movies to see if the card can write fast enough. If the indicator shows that the card is full, and movie recording stops automatically, the sound near the end of the movie may not be recorded properly. If the card's writing speed is slow (due to fragmentation) and the indicator appears, formatting the card may make the writing speed faster.