Sony FDR-AX40 How To Use Manual page 172

REC Mode].
You can record movies of a maximum of 9,999 scenes in XAVC S format or 3,999 scenes
in AVCHD format. And you can record a maximum of 40,000 MP4 movies and photos
collectively.
The maximum continuous recording time of a movie is approximately 13 hours.
This product uses the VBR (Variable Bit Rate) format to automatically adjust image
quality to suit the recording scene. This technology causes fluctuations in the recording
time of the media. Movies containing quickly moving and complex images are recorded at
a higher bit-rate, and this reduces the overall recording time.
[200] How to Use
photos Expected movie recording time and number of recordable photos for the internal
memory
Expected recording time of movies (models with the
internal memory)
The expected recording time when saving on the internal memory is shown as follows.
XAVC S 4K
When [ REC Mode] is set to [100Mbps
Frame Rate
* **
30p ( )/25p ( )
*
24p ( )
When [ REC Mode] is set to [60Mbps
Frame Rate
* **
30p ( )/25p ( )
*
24p ( )
Charging time/recording time of movies/number of recordable
Dual Video REC
On
Off
On
Off
Dual Video REC
On
Off
On
Off
].
Expected recording time
1 h 15 min (1 h 15 min)
1 h 15 min (1 h 15 min)
1 h 15 min (1 h 15 min)
1 h 15 min (1 h 15 min)
].
Expected recording time
2 h 00 min (2 h 00 min)
2 h 10 min (2 h 10 min)
2 h 00 min (2 h 00 min)
2 h 10 min (2 h 10 min)