Tex. Civil Practice and Remedies Code § 30.012

(a) With the agreement of the parties, and subject to Subsection (b), a trial judge may order that a hearing of a preliminary matter or witness testimony at trial may be conducted by electronic means, including satellite transmission, closed-circuit television transmission, or any other method of two-way electronic communication that is available to the parties, approved by the court, and capable of visually and audibly recording the proceedings.

(b) Witness testimony at trial in a district or statutory county court may be conducted by electronic means only if the witness is deposed before the commencement of the trial. Neither the court nor any party may waive the requirement to depose the witness under this subsection if any party objects.

(c) A court that allows a transmission made under this section shall consider it accurate and include it in the record of the case, unless the court determines otherwise.

(d) A party to a transmission made under this section that is not in court:

(1) shall provide at the party's own expense any equipment that is compatible with the equipment used in court; and

(2) may record the proceedings at the party's own expense.

(e) A copy of a proceeding videotaped by a court under this section may be obtained from the clerk of the court on payment of a reasonable amount to cover the cost of producing the copy.

(f) Expenses incurred by a court in conducting a proceeding or recording a transmission under this section shall be assessed and collected as court costs.