Movie shooting is automatically ended or interrupted (EOS-1D Mark IV)
05-Dec-2012
8201725100
Solution
If you use a slow-writing CF card, SD memory card, SDHC memory card, or SDXC memory card (hereafter referred to as "card") when shooting movies, the movie might not be recorded properly.
When shooting movies, use a large-capacity card with a fast writing/reading speed.
The CF card's speed should be 8MB/ sec. or higher. And the SD card should be rated SD Speed Class 6 ''
'' or higher.If you use a slow-writing card when shooting movies, the movie might not be recorded properly. And if you playback a movie on a card having a slow reading speed, the movie might not playback properly.
To check the card’s read/write speed, refer to the card manufacturer’s Web site.