Content-based client side video transcoding

1. A system comprising:

a processor;

a user interface coupled to the processor, the user interface comprising an image capture device; and

memory coupled to the processor and storing instructions that, when executed by the processor, cause the system to perform operations comprising:

capturing video data using the image capture device;

encoding the captured video data to generate encoded video data;

determining a complexity within a field of view of the image capture device based on a comparison between at least a portion of the captured video data and at least a portion of the encoded video data; and

generating, based on the determined complexity and the encoded video, transcoded video data by selecting a transcoding configuration that applies a bitrate to the encoded video, wherein the bitrate applied to the transcoded video is selected to correspond to a video quality metric, based on predefined mappings between at least one video quality metric and the transcoding configuration.

2. The system of claim 1 , wherein determining the complexity within the field of view of the image capture device includes detecting motion within the field of view.

3. The system of claim 2 , wherein determining the complexity within the field of view of the image capture device includes determining that the detected motion exceeds a predetermined threshold.

4. The system of claim 1 , wherein determining the complexity within the field of view of the image capture device includes detecting a texture within the field of view.

5. The system of claim 1 , wherein determining the complexity within the field of view of the image capture device includes determining an average difference between a plurality of frames in the captured video data and a plurality of frames in the encoded video data.

6. The system of claim 1 , wherein determining the complexity within the field of view of the image capture device includes determining a square error between a plurality of frames in the captured video data and a plurality of frames in the encoded video data.

7. The system of claim 1 , wherein determining the complexity within the field of view of the image capture device includes determining a peak signal-to-noise ratio between a first frame in the video data and a second frame in the video data.

8. The system of claim 1 , wherein the captured video data is uncompressed.

9. The system of claim 1 , wherein the captured video data is compressed.

10. The system of claim 1 , wherein the system receives additional video data from a device in communication with the system.

11. The system of claim 1 , wherein the bitrate applied to the transcoded video is one of:

a fixed bitrate, or a variable bitrate.

12. The system of claim 1 , wherein the bitrate applied to the transcoded video is capped.

13. The system of claim 1 , wherein generating the transcoded video includes transcoding the encoded video according to a predetermined transcoding profile to generate the transcoded video at a predetermined bitrate.

14. The system of claim 1 , wherein the user interface includes a display screen, and capturing the video data includes presenting the video data on the display screen.

15. The system of claim 14 , wherein the user interface further includes an input device, and wherein the memory further stores instructions for receiving, from the a user of the system via the input device, a user interaction for initiating a recording of the video data.

16. The system of claim 1 , wherein encoding the captured video data is performed using one or more of:

a frame by frame encoding, and an encoding of a collection of frames.

17. The system of claim 1 , wherein determining the complexity within the field of view of the image capture device includes encoding a video frame to a pixel frame and performing one or more subtraction operations with a corresponding frame of the captured video data.

18. The system of claim 1 , wherein the predefined mappings are stored within a database and are accessible via the database, to provide consistent video transcoding with respect to messaging clients of the messaging system.

19. A computer-implemented method comprising:

capturing video data, by a computer system, using an image capture device of a user interface coupled to the system;

encoding, by the computer system, the captured video data to generate encoded video data;

determining, by the computer system, a complexity within a field of view of the image capture device based on a comparison between at least a portion of the captured video data and at least a portion of the encoded video data; and

generating, by the computer system and based on the determined complexity and the encoded video, transcoded video data by selecting a transcoding configuration that applies a bitrate to the encoded video, wherein the bitrate applied to the transcoded video is selected to correspond to a video quality metric, based on predefined mappings between at least one video quality metric and the transcoding configuration.

20. A non-transitory computer-readable medium storing instructions that, when executed by a computer system, cause the computer system to perform operations comprising:

capturing video data using an image capture device of a user interface coupled to the computer system;

encoding the captured video data to generate encoded video data;

determining a complexity within a field of view of the image capture device based on a comparison between at least a portion of the captured video data and at least a portion of the encoded video data; and

generating, based on the determined complexity and the encoded video, transcoded video data by selecting a transcoding configuration that applies a bitrate to the encoded video, wherein the bitrate applied to the transcoded video is selected to correspond to a video quality metric, based on predefined mappings between at least one video quality metric and the transcoding configuration.