upc 710535815474. Firmware version 2026 (per the number displayed on the device).
First run on a new device, from fully charged battery until auto-off, just leaving it in the living room filming a ticking LED clock... Below is file sizes and ffmpeg -i output:
303M 2021-04-13 23:25 VID00001.MP4 Duration: 00:03:20.43, start: 0.000000, bitrate: 12678 kb/s
156M 2021-04-13 23:27 VID00002.MP4 Duration: 00:01:37.36, start: 0.000000, bitrate: 13386 kb/s
216M 2021-04-13 23:30 VID00003.MP4 Duration: 00:02:24.64, start: 0.000000, bitrate: 12469 kb/s
84M 2021-04-13 23:31 VID00004.MP4 Duration: 00:00:57.76, start: 0.000000, bitrate: 12061 kb/s
96M 2021-04-13 23:32 VID00005.MP4 Duration: 00:01:02.20, start: 0.000000, bitrate: 12837 kb/s
68M 2021-04-13 23:33 VID00006.MP4 Duration: 00:00:39.67, start: 0.000000, bitrate: 14171 kb/s
120M 2021-04-13 23:34 VID00007.MP4 Duration: 00:01:19.11, start: 0.000000, bitrate: 12632 kb/s
107M 2021-04-13 23:36 VID00008.MP4 Duration: 00:01:11.20, start: 0.000000, bitrate: 12605 kb/s
93M 2021-04-13 23:37 VID00009.MP4 Duration: 00:00:53.39, start: 0.000000, bitrate: 14605 kb/s
184M 2021-04-13 23:39 VID00010.MP4 Duration: 00:01:58.65, start: 0.000000, bitrate: 12969 kb/s
62M 2021-04-13 23:40 VID00011.MP4 Duration: 00:00:44.81, start: 0.000000, bitrate: 11589 kb/s
63M 2021-04-13 23:41 VID00012.MP4 Duration: 00:00:39.21, start: 0.000000, bitrate: 13440 kb/s
140M 2021-04-13 23:42 VID00013.MP4 Duration: 00:01:28.66, start: 0.000000, bitrate: 13195 kb/s
60M 2021-04-13 23:43 VID00014.MP4 Duration: 00:00:38.47, start: 0.000000, bitrate: 12949 kb/s
128M 2021-04-13 23:44 VID00015.MP4 Duration: 00:01:15.58, start: 0.000000, bitrate: 14166 kb/s
91M 2021-04-13 23:45 VID00016.MP4 Duration: 00:00:55.86, start: 0.000000, bitrate: 13648 kb/s
160M 2021-04-13 23:47 VID00017.MP4 Duration: 00:01:39.27, start: 0.000000, bitrate: 13439 kb/s
88M 2021-04-13 23:48 VID00018.MP4 Duration: 00:00:58.46, start: 0.000000, bitrate: 12492 kb/s
76M 2021-04-13 23:49 VID00019.MP4 Duration: 00:00:49.32, start: 0.000000, bitrate: 12785 kb/s
72M 2021-04-13 23:50 VID00020.MP4 Duration: 00:00:40.17, start: 0.000000, bitrate: 14893 kb/s
260M 2021-04-13 23:53 VID00021.MP4 Duration: 00:02:46.73, start: 0.000000, bitrate: 13031 kb/s
100M 2021-04-13 23:54 VID00022.MP4 Duration: 00:01:01.26, start: 0.000000, bitrate: 13563 kb/s
80M 2021-04-13 23:55 VID00023.MP4 Duration: 00:00:46.35, start: 0.000000, bitrate: 14384 kb/s
3.3G 2021-04-14 00:25 VID00024.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 15807 kb/s
3.3G 2021-04-14 00:55 VID00025.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 15507 kb/s
3.0G 2021-04-14 01:25 VID00026.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14235 kb/s
3.1G 2021-04-14 01:55 VID00027.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14476 kb/s
3.1G 2021-04-14 02:25 VID00028.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14428 kb/s
3.2G 2021-04-14 02:55 VID00029.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14898 kb/s
3.3G 2021-04-14 03:24 VID00030.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 15728 kb/s
3.4G 2021-04-14 03:54 VID00031.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 16120 kb/s
3.3G 2021-04-14 04:24 VID00032.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 15661 kb/s
3.1G 2021-04-14 04:54 VID00033.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14679 kb/s
3.1G 2021-04-14 05:24 VID00034.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14589 kb/s
3.1G 2021-04-14 05:54 VID00035.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14789 kb/s
3.3G 2021-04-14 06:23 VID00036.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 15400 kb/s
3.4G 2021-04-14 06:53 VID00037.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 15929 kb/s
3.4G 2021-04-14 07:23 VID00038.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 16120 kb/s
3.4G 2021-04-14 07:53 VID00039.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 16120 kb/s
156M 2021-04-13 23:27 VID00002.MP4 Duration: 00:01:37.36, start: 0.000000, bitrate: 13386 kb/s
216M 2021-04-13 23:30 VID00003.MP4 Duration: 00:02:24.64, start: 0.000000, bitrate: 12469 kb/s
84M 2021-04-13 23:31 VID00004.MP4 Duration: 00:00:57.76, start: 0.000000, bitrate: 12061 kb/s
96M 2021-04-13 23:32 VID00005.MP4 Duration: 00:01:02.20, start: 0.000000, bitrate: 12837 kb/s
68M 2021-04-13 23:33 VID00006.MP4 Duration: 00:00:39.67, start: 0.000000, bitrate: 14171 kb/s
120M 2021-04-13 23:34 VID00007.MP4 Duration: 00:01:19.11, start: 0.000000, bitrate: 12632 kb/s
107M 2021-04-13 23:36 VID00008.MP4 Duration: 00:01:11.20, start: 0.000000, bitrate: 12605 kb/s
93M 2021-04-13 23:37 VID00009.MP4 Duration: 00:00:53.39, start: 0.000000, bitrate: 14605 kb/s
184M 2021-04-13 23:39 VID00010.MP4 Duration: 00:01:58.65, start: 0.000000, bitrate: 12969 kb/s
62M 2021-04-13 23:40 VID00011.MP4 Duration: 00:00:44.81, start: 0.000000, bitrate: 11589 kb/s
63M 2021-04-13 23:41 VID00012.MP4 Duration: 00:00:39.21, start: 0.000000, bitrate: 13440 kb/s
140M 2021-04-13 23:42 VID00013.MP4 Duration: 00:01:28.66, start: 0.000000, bitrate: 13195 kb/s
60M 2021-04-13 23:43 VID00014.MP4 Duration: 00:00:38.47, start: 0.000000, bitrate: 12949 kb/s
128M 2021-04-13 23:44 VID00015.MP4 Duration: 00:01:15.58, start: 0.000000, bitrate: 14166 kb/s
91M 2021-04-13 23:45 VID00016.MP4 Duration: 00:00:55.86, start: 0.000000, bitrate: 13648 kb/s
160M 2021-04-13 23:47 VID00017.MP4 Duration: 00:01:39.27, start: 0.000000, bitrate: 13439 kb/s
88M 2021-04-13 23:48 VID00018.MP4 Duration: 00:00:58.46, start: 0.000000, bitrate: 12492 kb/s
76M 2021-04-13 23:49 VID00019.MP4 Duration: 00:00:49.32, start: 0.000000, bitrate: 12785 kb/s
72M 2021-04-13 23:50 VID00020.MP4 Duration: 00:00:40.17, start: 0.000000, bitrate: 14893 kb/s
260M 2021-04-13 23:53 VID00021.MP4 Duration: 00:02:46.73, start: 0.000000, bitrate: 13031 kb/s
100M 2021-04-13 23:54 VID00022.MP4 Duration: 00:01:01.26, start: 0.000000, bitrate: 13563 kb/s
80M 2021-04-13 23:55 VID00023.MP4 Duration: 00:00:46.35, start: 0.000000, bitrate: 14384 kb/s
3.3G 2021-04-14 00:25 VID00024.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 15807 kb/s
3.3G 2021-04-14 00:55 VID00025.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 15507 kb/s
3.0G 2021-04-14 01:25 VID00026.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14235 kb/s
3.1G 2021-04-14 01:55 VID00027.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14476 kb/s
3.1G 2021-04-14 02:25 VID00028.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14428 kb/s
3.2G 2021-04-14 02:55 VID00029.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14898 kb/s
3.3G 2021-04-14 03:24 VID00030.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 15728 kb/s
3.4G 2021-04-14 03:54 VID00031.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 16120 kb/s
3.3G 2021-04-14 04:24 VID00032.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 15661 kb/s
3.1G 2021-04-14 04:54 VID00033.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14679 kb/s
3.1G 2021-04-14 05:24 VID00034.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14589 kb/s
3.1G 2021-04-14 05:54 VID00035.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 14789 kb/s
3.3G 2021-04-14 06:23 VID00036.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 15400 kb/s
3.4G 2021-04-14 06:53 VID00037.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 15929 kb/s
3.4G 2021-04-14 07:23 VID00038.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 16120 kb/s
3.4G 2021-04-14 07:53 VID00039.MP4 Duration: 00:29:50.59, start: 0.000000, bitrate: 16120 kb/s
There is also a 3.4G 2021-04-14 08:21 VID00040.MP4 that cannot be played by VLC. Still, Linux file command identify it as VID00040.MP4: ISO Media, MPEG v4 system, 3GPP JVT AVC [ISO 14496-12:2005].