In fact, the situation you said has not reached such a requirement.
At present, the whole investigation process can be recorded, which is limited to major duty crime cases investigated by procuratorial organs, such as major corruption and bribery cases. During the investigation, the whole process was recorded.
In general criminal cases, even if there are videos, there are one or two transcripts with videos, and not all transcripts are videos.
Of course, it is not difficult to record the whole process. There is nothing wrong with the equipment and hardware. The key is people, which is a subjective factor. The public security organs are unwilling to set up so many obstacles for their investigation. At the same time, the idea of heavy attack and light defense is also an important factor affecting the progress of this process.
I also hope that our investigation can be recorded all the time, which may be more transparent, more conducive to protecting the legitimate rights and interests of criminal suspects and reducing the occurrence of extorting confessions by torture.