Sony ILCA-99M2 - Manual (Page 314)

Movies cannot be recorded in 100 Mbps or more.
SDHC / SDXC / microSDHC / microSDXC memory card (SD Speed Class 10, or UHS
Speed Class U1 or faster)
UHS Speed Class U3 is required to record at 100 Mbps or more.
[HDMI Info. Display] temporarily switches to [Off] when [ File Format] is set to [XAVC S
4K].
Images will not appear on the monitor of the camera if you record movies while the camera
is connected to an HDMI device with [
File Format] set to [XAVC S 4K].
XAVC S HD:
Records HD movies in the XAVC S format. This format supports a high bit rate.
Audio: LPCM
One of the following kinds of memory card is needed to record movies with [ File Format]
set to [XAVC S HD]:
Memory Stick PRO-HG Duo
Movies cannot be recorded in 100 Mbps or more.
SDHC / SDXC / microSDHC / microSDXC memory card (SD Speed Class10, or UHS
Speed Class U1 or faster)
UHS Speed Class U3 is required to record at 100 Mbps or more.
AVCHD:
Records HD movies in the AVCHD format. This file format is suitable for high-definition TV.
Audio: Dolby Digital
MP4:
Records MP4 (AVC) movies. This format is suitable for playback on smartphones or tablets,
web uploads, email attachments, etc.
Audio: AAC
Hint
You can save images to a computer or copy them to a disc compatible with your playback device
using the PlayMemories Home software.
Note
When [ File Format] is set to [AVCHD], the file size of movies is limited to approx. 2 GB. If the
movie file size reaches approx. 2 GB during recording, a new movie file will be created automatically.
When [ File Format] is set to [MP4], the file size of movies is limited to approx. 4 GB. If the movie
file size reaches approx. 4 GB during recording, recording will stop automatically.