The number of cameras of modern smartphones is constantly increasing, as well as the resolution of their sensors. Software developers do not always have time to keep up with this growth - some restrictions of the Android OS regarding video recording, related to the features of already outdated standards, are still in effect. The release of the 11th revision of the "green robot" should "pump" the ability to shoot new gadgets.
The maximum video size of 4 GB was set for Android smartphones back in 2014, in accordance with the limitations of the file system of older models. In addition, most of the gadgets of that time were not able to shoot in 4K resolution, clogging the device's memory. With the advent of models equipped with high-volume drives, the problem with storage overflow was solved, but not with the size of files.
Now videos that take up more than 4 GB of disk space are programmatically divided into shorter videos. For example, when recording 4K video on a Pixel 4 with a 48 Mbps bitrate, four gigabytes will be enough for about 12 minutes of shooting, then the camera will save the video and start shooting the next one. The DCIM folder will accordingly store not one record, but a whole sequence of files.
The resulting records can be combined into a single file, but this requires third-party software and the ability to use it. However, the situation may soon change - according to members of the Android Open Source Project (AOSP) community, in Android 11, Google will remove the previously set restriction. As a result, the maximum amount of video will be limited only by the free storage space of the device itself.
Presumably, the new algorithm will appear in the release build of the mobile OS, which is expected to appear in August 2020.