Variable playback speed template for video editing application

Patent metadata

Field	Value
Publication number	US-9966108-B1
Application number	US-201715458759-A
Country	US
Kind code	B1
Filing date	Mar 14, 2017
Priority date	Jan 29, 2015
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

A playback speed effect is applied to a video using a playback speed template. The playback speed template specifies playback speed ratios (i.e., ratios between playback duration and capture duration) at the highlight moment, at a template start time, and at a template end time. A video associated with a highlight tag indicating a highlight capture time of a highlight moment within the video is accessed. An input portion of the video including the highlight moment is identified. The duration of the input portion has a duration depending on the template start time and the template end time. A playback speed template is applied to the input portion. A modified video including a modified video portion is generated from the input portion of the video according to the applied playback speed template and is provided for subsequent playback.

First claim

The invention claimed is:

1. A computer-implemented method for applying a playback speed effect to videos, the method comprising:
accessing a video portion, the video portion having a portion start time and a portion end time;
accessing a previously stored playback speed template specifying playback speed ratios at template times comprising a template start time and a template end time, the playback speed ratios being ratios between playback durations and capture durations;
aligning the template start time to the portion start time and/or the template end time to the portion end time;
generating a modified video portion by applying the playback speed ratios dictated by the previously stored playback speed template to corresponding portions of the video portion subsequent to the alignment of the template start time to the portion start time and/or the template end time to the portion end time, the application of the playback speed ratios to the corresponding portions of the video portion modifying playback durations of the corresponding portions of the video portion according to the playback speed ratios; and
providing the modified video portion for subsequent playback.

2. The method of claim 1 , wherein the previously stored playback speed template specifies one or more progressions of playback speed ratios at times between the template start time and the template end time.

3. The method of claim 1 , wherein accessing the previously stored playback speed template comprises selecting the previously stored playback speed template based at least in part on a type of event tag or a type of activity associated with the video portion.

4. The method of claim 1 , wherein the modified video portion is generated by a video server.

5. The method of claim 1 , further comprising:
generating a summary video comprising the modified video portion placed in a slot of a video summary template,
wherein accessing the previously stored playback speed template comprises selecting the previously stored playback speed template based on the slot of the video summary template.

6. The method of claim 2 , wherein the one or more progressions of playback speed ratios at times between the template start time and the template end time include a beginning progression and an ending progression of a one-to-one playback speed ratio, and a middle progression of a none-one-to-one playback speed ratio, wherein transitions between (1) the beginning progression and the middle progression, and (2) the middle progression and the ending progression include linear or nonlinear changes in the playback speed ratios.

7. The method of claim 1 , wherein the corresponding portions of the video portion comprises video frames, and wherein applying the playback speed ratios comprises:
identifying a template frame time for individual video frame relatives to the template start time or the template end time by comparing a capture time of the individual video frames to the portion start time or the portion end time; and
determining a playback time for the individual video frames using the playback speed ratios to determine a duration of time accumulated between the template start time or the template end time and the template frame time for the individual video frames;
wherein the modified video portion is generated based on the playback time determined for the individual video frames.

8. The method of claim 7 , wherein generating the modified video portion comprises generating additional frames interpolated between the video frames to match a frame rate of the modified video portion with a specified frame rate.

9. A non-transitory, computer-readable medium storing instructions for applying a playback speed effect to videos, the instructions when executed causing one or more physical processors to:
access a video portion, the video portion having a portion start time and a portion end time;
access a previously stored playback speed template specifying playback speed ratios at template times comprising a template start time and a template end time, the playback speed ratios being ratios between playback durations and capture durations;
align the template start time to the portion start time and/or the template end time to the portion end time;
generate a modified video portion by apply the playback speed ratios dictated by the previously stored playback speed template to corresponding portions of the video portion subsequent to the alignment of the template start time to the portion start time and/or the template end time to the portion end time, the application of the playback speed ratios to the corresponding portions of the video portion modifying playback durations of the corresponding portions of the video portion according to the playback speed ratios; and
provide the modified video portion for subsequent playback.

10. The medium of claim 9 , wherein the previously stored playback speed template specifies one or more progressions of playback speed ratios at times between the template start time and the template end time.

11. The medium of claim 9 , wherein accessing the previously stored playback speed template comprises selecting the previously stored playback speed template based at least in part on a type of event tag or a type of activity associated with the video portion.

12. The medium of claim 9 , wherein the modified video portion is generated by a video server.

13. The medium of claim 9 , wherein the execution of the instructions further causes the one or more physical processors to:
generate a summary video comprising the modified video portion placed in a slot of a video summary template;
wherein accessing the previously stored playback speed template comprises selecting the previously stored playback speed template based on the slot of the video summary template.

14. The medium of claim 10 , wherein the one or more progressions of playback speed ratios at times between the template start time and the template end time include a beginning progression and an ending progression of a one-to-one playback speed ratio, and a middle progression of a none-one-to-one playback speed ratio, wherein transitions between (1) the beginning progression and the middle progression, and (2) the middle progression and the ending progression include linear or nonlinear changes in the playback speed ratios.

15. The medium of claim 9 , wherein the corresponding portions of the video portion comprises video frames, and wherein applying the playback speed ratios comprises:
identifying a template frame time for individual video frame relatives to the template start time or the template end time by comparing a capture time of the individual video frames to the portion start time or the portion end time; and
determining a playback time for the individual video frames using the playback speed ratios to determine a duration of time accumulated between the template start time or the template end time and the template frame time for the individual video frames;
wherein the modified video portion is generated based on the playback time determined for the individual video frames.

16. The medium of claim 15 , wherein generating the modified video portion comprises generating additional frames interpolated between the plurality of video frames to match a frame rate of the modified video portion with a specified frame rate.

17. A computing system for applying a playback speed effect to videos, the system comprising:
one or more physical processors configured by computer-readable instructions to:
access a video portion, the video portio

Assignees

• Gopro Inc

Inventors

• Matias Joven Michael
• Sievert Otto Kenneth
• Bodinet Joshua Edward

Classifications

• G11B27/005 Primary

  Reproducing at a different information rate from the information rate of recording (for television signals H04N5/783) · CPC title

• G11B27/19

  by using information detectable on the record carrier · CPC title

• G11B27/031

  Electronic editing of digitised analogue information signals, e.g. audio or video signals · CPC title

• H04N5/765

  Interface circuits between an apparatus for recording and another apparatus · CPC title

• H04N5/783

  Adaptations for reproducing at a rate different from the recording rate · CPC title