Meanwhile, more and more first reports about the heat behaviour of the new flagship Sony A1 camera are trickling in - time for a first overview of where Sony&s new mirrorless flagship camera stands on the subject of overheating. As a reminder, Sony itself specifies a minimum of 30 minutes of non-stop 8K video recording in 10-bit 4:2.2 @ 30p.
According to initial tests, Sony seems to have set this minimum in a pleasingly conservative manner. However, one should also keep in mind that it is winter in the northern hemisphere and the A1 is currently being tested primarily at room temperature. So it&s quite possible that the 30-minute minimum shooting time refers to direct sunlight in summer.
At room temperature, the 8K 24p recording seems to be possible for more than 1 hour, according to several reports. DP Review, for example, reports 1 hour and 11 minutes at 200 Mbps 8K 24p. After a 15 minute time-out, another 1 hour and 4 minutes of 8K recording was possible with a fresh battery and fresh card.
However, 8K mode does not represent the maximum load on the Sony Alpha 1 in terms of heat. The greatest heat seems to develop at 4K 120 fps. Here, 29 minutes were possible at a stretch with the Sony A1 and another 25 minutes after a 15-minute break.
So if you don&t need to record for well over 1 hour in 8K or more than about half an hour at 120 fps, you can get quite respectable recording times at a stretch with the A1 - at least at room temperature.
You can read more about the new Sony A1 and how it compares to the Sony A7S III, Sony A7R IV and A9 at here.