# US 11,908,490 B2 · Video recording method and device, electronic device and storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,908,490 B2 - Document ID: US11908490B2 - Status: Granted - Kind: B2 - Application number: 18/356,556 - Filed: 2023-07-21 - Published: 2023-11-16 - Granted: 2024-02-20 - Earliest claimed: 2021-01-21 - Assignees: Beijing Bytedance Network Technology Co., Ltd. - Applicants: Beijing Bytedance Network Technology Co., Ltd. - Inventors: Siyu He - Web page: https://patentgrep.com/patent/US11908490B2 ## CPC - G11B 27/005: {Reproducing at a different information rate from the information rate of recording (for television signals H04N5/783)} - H04N 5/262: Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects {; Cameras specially adapted for the electronic generation of special effects} - G11B 27/031: Electronic editing of digitised analogue information signals, e.g. audio or video signals - G11B 27/34: Indicating arrangements {(indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D)} - H04N 5/772: {the recording apparatus and the television camera being placed in the same enclosure} - H04N 5/783: Adaptations for reproducing at a rate different from the recording rate - H04N 21/4334: {Recording operations (recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27)} - H04N 21/4402: involving reformatting operations of video signals for household redistribution, storage or real-time display {(details of conversion of video standards at pixel level H04N7/01; video transcoding H04N19/40; adapting incoming signals to the display format of the display terminal G09G5/005; media handling at the source in data packet switching networks H04L65/764)} - H04N 21/47217: {for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks (specific graphical features in visual interfaces H04N21/4312)} - H04N 21/8547: involving timestamps for synchronizing content - H04N 23/633: {for displaying additional information relating to control or operation of the camera} - H04N 23/635: {Region indicators; Field of view indicators} - H04N 23/64: {Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image} - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A video recording method and device, an electronic device and a storage medium are provided. The method includes: acquiring speed varying information of a speed-varied video, where the speed varying information is used to represent a playing speed change of the speed-varied video; performing reverse speed-varying processing on the speed-varied video according to the speed varying information to obtain an original speed video; displaying the original speed video, and synchronously performing video shooting to generate an original speed target video; and performing speed varying processing on the original speed target video according to the speed varying information to obtain a target speed-varied video. ## Claims ### Claim 1 A video recording method, comprising: performing reverse speed-varying processing on a speed-varied video to obtain an original speed video; displaying the original speed video, and synchronously performing video shooting to generate an original speed target video; and performing speed varying processing on the original speed target video to obtain a target speed-varied video, wherein a playing speed change of the target speed-varied video is consistent with a playing speed change of the speed-varied video. ### Claim 2 (depends on 1) The method according to claim 1, wherein performing the reverse speed-varying processing on the speed-varied video to obtain the original speed video comprises: acquiring speed varying information of the speed-varied video, wherein the speed varying information is used to represent a playing speed change of the speed-varied video; performing the reverse speed-varying processing on the speed-varied video according to the speed varying information to obtain the original speed video; wherein performing the speed varying processing on the original speed target video to obtain the target speed-varied video comprises: performing the speed varying processing on the original speed target video according to the speed varying information to obtain the target speed-varied video. ### Claim 3 (depends on 2) The method according to claim 2, wherein performing the reverse speed-varying processing on the speed-varied video according to the speed varying information to obtain the original speed video comprises: determining a playing timestamp of the speed-varied video according to the speed varying information, wherein the playing timestamp is a timestamp for playing the speed-varied video at an original speed; determining a video frame corresponding to the playing timestamp of the speed-varied video; and generating the original speed video according to the video frame. ### Claim 4 (depends on 3) The method according to claim 3, wherein the speed varying information comprises a speed varying anchor point of the speed-varied video and a playing speed corresponding to the speed varying anchor point; and determining the playing timestamp of the speed-varied video according to the speed varying information comprises: determining a first time interval according to the speed varying anchor point of the speed-varied video; determining a time step length corresponding to the speed varying anchor point according to an integral of the playing speed corresponding to the speed varying anchor point of the speed-varied video over the first time interval; and determining the playing timestamp of the speed-varied video according to the time step length. ### Claim 5 (depends on 3) The method according to claim 3, wherein determining the video frame corresponding to the playing timestamp of the speed-varied video comprises: decoding the speed-varied video according to the playing timestamp to obtain the video frame corresponding to the playing timestamp; and generating the original speed video according to the video frame comprises: acquiring a preset recording timestamp, wherein the recording timestamp is used to represent a playing timestamp of the original speed video; and determining a recording video frame corresponding to the recording timestamp according to a corresponding relationship between the recording timestamp and the playing timestamp, and synthesizing the original speed video from the recording video frame. ### Claim 6 (depends on 3) The method according to claim 3, wherein the speed-varied video comprises audio data, and the method further comprises: determining a playing speed, of the audio data, corresponding to the playing timestamp; and resampling the audio data according to the playing speed to obtain an audio frame corresponding to the playing timestamp; and generating the original speed video according to the video frame comprises: generating the original speed video according to the video frame and a corresponding audio frame. ### Claim 7 (depends on 6) The method according to claim 6, wherein resampling the audio data according to the playing speed to obtain the audio frame corresponding to the playing timestamp comprises: acquiring a preset first audio sampling rate; determining a second audio sampling rate according to the first audio sampling rate and the playing speed of the audio data; and resampling the audio data according to the second audio sampling rate to obtain the audio frame corresponding to the playing timestamp. ### Claim 8 (depends on 6) The method according to claim 6, wherein the method further comprises: performing audio-video synchronization on the video frame and the audio frame. ### Claim 9 An electronic device, comprising: at least one processor and a memory; wherein the memory stores computer-executed instructions; and the at least one processor executes the computer-executed instructions stored in the memory to cause the at least one processor to: perform reverse speed-varying processing on a speed-varied video to obtain an original speed video; display the original speed video, and synchronously preform video shooting to generate an original speed target video; and perform speed varying processing on the original speed target video to obtain a target speed-varied video, wherein a playing speed change of the target speed-varied video is consistent with a playing speed change of the speed-varied video. ### Claim 10 (depends on 9) The electronic device according to claim 9, wherein the at least one processor is caused to: acquire speed varying information of the speed-varied video, wherein the speed varying information is used to represent a playing speed change of the speed-varied video; wherein the at least one processor is further caused to: perform the reverse speed-varying processing on the speed-varied video according to the speed varying information to obtain the original speed video; perform the speed varying processing on the original speed target video according to the speed varying information to obtain the target speed-varied video. ### Claim 11 (depends on 10) The electronic device according to claim 10, wherein the at least one processor is caused to: determine a playing timestamp of the speed-varied video according to the speed varying information, wherein the playing timestamp is a timestamp for playing the speed-varied video at an original speed; determine a video frame corresponding to the playing timestamp of the speed-varied video; and generate the original speed video according to the video frame. ### Claim 12 (depends on 11) The electronic device according to claim 11, wherein the speed varying information comprises a speed varying anchor point of the speed-varied video and a playing speed corresponding to the speed varying anchor point; and the at least one processor is caused to: determine a first time interval according to the speed varying anchor point of the speed-varied video; determine a time step length corresponding to the speed varying anchor point according to an integral of the playing speed corresponding to the speed varying anchor point of the speed-varied video over the first time interval; and determine the playing timestamp of the speed-varied video according to the time step length. ### Claim 13 (depends on 11) The electronic device according to claim 11, wherein the at least one processor is caused to: decode the speed-varied video according to the playing timestamp to obtain the video frame corresponding to the playing timestamp; and the at least one processor is further caused to: acquire a preset recording timestamp, wherein the recording timestamp is used to represent a playing timestamp of the original speed video; and determine a recording video frame corresponding to the recording timestamp according to a corresponding relationship between the recording timestamp and the playing timestamp, and synthesize the original speed video from the recording video frame. ### Claim 14 (depends on 11) The electronic device according to claim 11, wherein the speed-varied video comprises audio data, and the at least one processor is further caused to: determine a playing speed, of the audio data, corresponding to the playing timestamp; and resample the audio data according to the playing speed to obtain an audio frame corresponding to the playing timestamp; and the at least one processor is further caused to: generate the original speed video according to the video frame and a corresponding audio frame. ### Claim 15 (depends on 14) The electronic device according to claim 14, wherein the at least one processor is further caused to: acquire a preset first audio sampling rate; determine a second audio sampling rate according to the first audio sampling rate and the playing speed of the audio data; and resample the audio data according to the second audio sampling rate to obtain the audio frame corresponding to the playing timestamp. ### Claim 16 (depends on 14) The method according to claim 14, wherein the at least one processor is further caused to: perform audio-video synchronization on the video frame and the audio frame. ### Claim 17 A non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores computer-executed instructions, and when a processor executes the computer-executed instructions, the following operations are implemented: performing reverse speed-varying processing on a speed-varied video to obtain an original speed video; displaying the original speed video, and synchronously performing video shooting to generate an original speed target video; and performing speed varying processing on the original speed target video to obtain a target speed-varied video, wherein a playing speed change of the target speed-varied video is consistent with a playing speed change of the speed-varied video. ### Claim 18 (depends on 17) The storage medium according to claim 17, wherein before performing reverse speed-varying processing on the speed-varied video to obtain the original speed video, the following operation is implemented: acquiring speed varying information of the speed-varied video, wherein the speed varying information is used to represent a playing speed change of the speed-varied video; wherein performing the reverse speed-varying processing on the speed-varied video to obtain the original speed video comprises: performing the reverse speed-varying processing on the speed-varied video according to the speed varying information to obtain the original speed video; wherein performing the speed varying processing on the original speed target video to obtain the target speed-varied video comprises: performing the speed varying processing on the original speed target video according to the speed varying information to obtain the target speed-varied video. ### Claim 19 (depends on 18) The storage medium according to claim 18, wherein performing the reverse speed-varying processing on the speed-varied video to obtain the original speed video comprises: determining a playing timestamp of the speed-varied video according to the speed varying information, wherein the playing timestamp is a timestamp for playing the speed-varied video at an original speed; determining a video frame corresponding to the playing timestamp of the speed-varied video; and generating the original speed video according to the video frame. ### Claim 20 (depends on 19) The storage medium according to claim 19, wherein the speed varying information comprises a speed varying anchor point of the speed-varied video and a playing speed corresponding to the speed varying anchor point; and determining the playing timestamp of the speed-varied video according to the speed varying information comprises: determining a first time interval according to the speed varying anchor point of the speed-varied video; determining a time step length corresponding to the speed varying anchor point according to an integral of the playing speed corresponding to the speed varying anchor point of the speed-varied video over the first time interval; and determining the playing timestamp of the speed-varied video according to the time step length.