Hello, recorded evidence becomes audio-visual material in law. Audio-visual materials are materials that can reproduce the original sound and image of the case, relevant materials stored in the computer and information provided by other scientific and technological equipment, as materials to prove the true situation of the case.

Whether the audio-visual materials are effective and used as evidence must be judged from the following three aspects:

First, the legality of audio-visual materials. It can be judged from three aspects: first, it can be judged whether the act of obtaining evidence is legal, and the audio-visual materials required to be collected must not violate the prohibition provisions of the law. The second is to judge whether the purpose of collection is legal and whether the audio-visual materials formed by audio and video recordings set for legal purposes are legal. The third is to judge whether the solicitation behavior harms the legitimate rights and interests of others, public interests and national interests. Audio-visual materials obtained without harm are legal.

Second, the authenticity of audio-visual materials. In the trial practice, some parties do not fully recognize the audio-visual materials provided by the other party. Therefore, for audio-visual materials, it is necessary to find out the time, place, people present and background when obtaining evidence, comprehensively consider audio and video evidence, use logical methods to determine favorable evidence, and finally determine the facts. If the parties have any objection to the authenticity of the audio-visual materials, they should be reminded to apply for judicial expertise to identify the authenticity and inform them that they may bear adverse consequences if they do not apply.

Third, the probative power of audio-visual materials. There are some flaws and weaknesses in the evidence, which cannot be used as the basis for deciding the case alone. Only by relying on the reinforcement of other evidence and strengthening the value of evidence can it be used as the basis for finalizing the case. There are flaws in the authenticity of doubtful audio-visual materials, but we cannot completely deny their probative ability and probative force as evidence. Instead, we should strengthen the probative power of audio-visual materials through comprehensive examination and approval of all evidence, so as to approach the objective truth to the greatest extent and realize substantive justice. In the case that the audio-visual materials are single evidence, it is necessary to prompt the parties to provide other evidence to support them.