24. The non-transitory computer-readable medium of claim 19 , wherein the first portion of the dialog by a first speaker and a second speaker occurs in an environment, wherein the environment is associated with an attribute, and wherein the one or more instructions further cause the processor, when training the ASR, to: filter the multimedia content to remove at least one of a part of the audio or a part of the captions associated with another environment, wherein the other environment is not associated with the attribute of the environment; and train the ASR further with respect to the attribute of the environment using the filtered multimedia content that excludes the at least one of the part of the audio or the part of the captions associated with the other environment.
19. A non-transitory computer-readable medium to store instructions, the instructions comprising: one or more instructions that, when executed by a processor, cause the processor to: receive multimedia content that includes video, audio, and captions identifying a textual representation of the audio, wherein the multimedia content relates to dialog by a first speaker and a second speaker; perform image processing on the video to identify an age group of the first speaker and a gender of the first speaker, wherein the second speaker is not associated with at least one of the age group or the gender; determine, based on the image processing, a first portion of the video presenting a first portion of the dialog by the first speaker and a second portion of the video presenting a second portion of the dialog by the second speaker, wherein a first portion of the captions is associated with the first portion of the dialog and a second portion of the captions is associated with the second portion of the dialog; identify a first portion of the audio associated with the first portion of the video, and a second portion of the audio associated with the second portion of the video, wherein the one or more instructions further cause the processor, when identifying the portion of audio associated with the captions of the video, to: determine a first confidence value associated with an alignment between a first part of the audio associated with the first speaker and a corresponding first part of the captions; determine a second confidence value associated with an alignment between a second part of the audio associated with the first speaker and a corresponding second part of the captions; and select, as the first portion of the audio to be used for training the ASR with respect to the age group and the gender of the first speaker, the first part of the audio or the second part of the audio based on a comparison of the first confidence value and the second confidence value; filter the multimedia content to extract the first portion of the audio and the first portion of the captions and to remove the second portion of the audio and the second portion of the captions; and train an adaptive speech recognition system (ASR) with respect to the age group of the first speaker and the gender of the first speaker using the first portion of the audio and the first portion of the captions, wherein the one or more instructions further cause the processor, when training the ASR, to: use the untrained ASR to perform a speech-to-text conversion of the first portion of the audio; calculate an error value based on comparing the first portion of the captions and results from the speech-to-text conversion using the untrained ASR; and use the first portion of the audio and the first portion of the captions to train the ASR with respect to the age group and the gender of the first speaker when the error value is between a first threshold and a second threshold, wherein the first threshold is greater than the second threshold, and wherein the first portion of the audio and the first portion of the captions are not used to train the ASR with respect to the age group and the gender of the first speaker when the error value is above the first threshold or below than the second threshold.