ipb+raw does not help on raw recording time on 5d3?

[mlrocks]

just tested on 5d3, uhd 1x1, 3.5k 1x1, 14 bit /14 bit lossless modes, artificial light, iso auto 1600:
canon q menu:
ipb + small raw,
all-i + raw,
all-i + mid raw
all-i + raw/l-jpeg

the recording time is the same ball park, 50-70 frames.

i thought ipb plus raw can save out some camera memory. but seems just marginal effects.

[mlrocks]

In door, night, light bulb, ISO auto
Canon Q menu: IPB, 1920x1080, 24 fps; Small raw;
3.5k 1x1, AR 2.39, 14 bit lossless
ISO 200 in this preset
-10 bit, green, one minute, manually stop
-12 bit, first several seconds red, then yellow, then green, one minute, manually stop
-14 bit, first several seconds red, then yellow, one minute, manually stop
All show green in ML menu by calculation, suggesting can be continuous.

UHD 1x1, AR 2.5, 14 bit lossless
ISO 400 in this preset (why, this preset should have larger sensor area than 3.5 k 1x1)
10 bit, 12 bit, 14 bit, all only several seconds.
By calculation, 10 bit UHD should be equal to 3.5k 12 bit in terms of data flow, yet very short recording time.

Seems to me, that IPB and Raw may help in certain modes, in this case, 3.5k 1x1. This is one of my major preset, the other one is 5.7k 1x3. But 5.7k 1x3 14 bit is green always, no need for these hacks.

[mlrocks]

The same room, a darker scene
In door, night, light bulb, ISO auto
Canon Q menu: IPB, 1920x1080, 24 fps; Small raw;
3.5k 1x1, AR 2.39, 14 bit lossless
ISO 1600 in this scene
-10 bit, green, one minute, manually stop
-12 bit, first several seconds red, then yellow, then green, one minute, manually stop
-14 bit, after several seconds the recording stopped

So
in 3.5k 1x1 preset
10 bit mode is the most robust, can be continuous all the time
12 bit mode is also very robust, difficult to break down
14 bit mode depends on the scene.