An electronic device comprising: a touchscreen; and a controller operatively coupled to the touchscreen and being configured to: control a first video to play; cause the touchscreen to display first contents related to playback of the first video, wherein the first contents include at least one of text or image related to major content of the first video being currently played; record audio that is associated with the first video while the first contents are displayed, wherein the recording occurs in response to an input received at the electronic device; cause the touchscreen to display a recording status bar indicating progress of audio recording, wherein the recording status bar includes a header indicating a recording spot at a current point in time; cause the touchscreen to display second contents that are generated from converting the recorded audio into text, wherein the displayed second contents include separated sentences; when an input for dragging the header from a first point of the recording status bar to a specific point of the recording status bar is received, the specific point corresponding to a previous recording point compared to the first point, cause the touch screen to display the header at a second point of the recording status bar corresponding to a starting point of a separated sentence, said separated sentence corresponding to said specific point, and convert an audio corresponding to said separated sentence into text, and cause the touchscreen to display the converted text while playing the first video. a touchscreen; and a controller operatively coupled to the touchscreen and being configured to: control a first video to play; cause the touchscreen to display first contents related to playback of the first video, wherein the first contents include at least one of text or image related to major content of the first video being currently played; record audio that is associated with the first video while the first contents are displayed, wherein the recording occurs in response to an input received at the electronic device; cause the touchscreen to display a recording status bar indicating progress of audio recording, wherein the recording status bar includes a header indicating a recording spot at a current point in time; cause the touchscreen to display second contents that are generated from converting the recorded audio into text, wherein the displayed second contents include separated sentences; when an input for dragging the header from a first point of the recording status bar to a specific point of the recording status bar is received, the specific point corresponding to a previous recording point compared to the first point, cause the touch screen to display the header at a second point of the recording status bar corresponding to a starting point of a separated sentence, said separated sentence corresponding to said specific point, and convert an audio corresponding to said separated sentence into text, and cause the touchscreen to display the converted text while playing the first video. control a first video to play; cause the touchscreen to display first contents related to playback of the first video, wherein the first contents include at least one of text or image related to major content of the first video being currently played; record audio that is associated with the first video while the first contents are displayed, wherein the recording occurs in response to an input received at the electronic device; cause the touchscreen to display a recording status bar indicating progress of audio recording, wherein the recording status bar includes a header indicating a recording spot at a current point in time; cause the touchscreen to display second contents that are generated from converting the recorded audio into text, wherein the displayed second contents include separated sentences; when an input for dragging the header from a first point of the recording status bar to a specific point of the recording status bar is received, the specific point corresponding to a previous recording point compared to the first point, cause the touch screen to display the header at a second point of the recording status bar corresponding to a starting point of a separated sentence, said separated sentence corresponding to said specific point, and convert an audio corresponding to said separated sentence into text, and cause the touchscreen to display the converted text while playing the first video.