Duties and obligations of lawyers:
1. Provide consultation on legal issues to the client as agreed, draft and review legal documents, participate in litigation, mediation or arbitration activities as an agent, handle other legal affairs entrusted, and safeguard the legitimate rights and interests of the client. If a lawyer represents litigation legal affairs or non-litigation legal affairs, he shall safeguard the legitimate rights and interests of the client within the scope of authorization;
2, according to the facts and laws, put forward the criminal suspects and defendants are innocent, the crime is light or reduce or exempt from their criminal responsibility materials and opinions, to protect the criminal suspects and defendants' litigation rights and other legitimate rights and interests. The client may refuse the lawyer entrusted by him to continue to defend or represent him, and at the same time, he may entrust another lawyer to act as a defender or agent;
3, as a legal adviser, agent ad litem, criminal defender, non-litigation agent, participate in mediation and arbitration, answer legal advice, write legal documents, etc. In order to safeguard the legitimate rights and interests of the parties and the correct implementation of the law.
To sum up, as a kind of evidence, surveillance video can be extracted by certified judicial personnel, including lawyers, or by law firms with certificates, which are clearly stipulated in the three major procedural laws.
Legal basis:
Article 34 of the Lawyers Law of People's Republic of China (PRC)
The entrusted lawyer has the right to consult, extract and copy the litigation documents and files related to the case from the date of examination and prosecution of the case. The entrusted lawyer has the right to consult, extract and copy all materials related to the case from the date when the people's court accepts the case.
Article 35
The entrusted lawyer may, according to the needs of the case, apply to the people's procuratorate or the people's court to collect and obtain evidence or apply to the people's court to notify witnesses to testify in court.
If a lawyer investigates and collects evidence by himself, he may, with the lawyer's practice certificate and the certificate of the law firm, investigate the situation related to undertaking legal affairs with the relevant units or individuals.
Article 36
If a lawyer acts as an agent ad litem or defender, his right to debate or defend shall be guaranteed according to law.