Techniques for lossless compression of a digital image using prior image context.

Techniques for lossless compression of a digital image using prior image context.

A video transcoding method is provided for a video transcoding device. The method includes obtaining a video sequence in source video data, which comprises a plurality of video sequences arranged in a sequence arrangement order; obtaining a source video frame in the video sequence; and obtaining a first ratio of a sum of absolute transformed differences of an initial frame in the video sequence to a bit rate of the video sequence. The method also includes adjusting a quantization parameter of the source video frame based on the first ratio; encoding the source video frame based on an adjusted quantization parameter to obtain a target video frame; replacing the source video frame with the target video frame to obtain a video sequence after the replacement; and adding the video sequence after the replacement to target video data according to the sequence arrangement order.

The disclosed computer-implemented method may include receiving original media content, transcoding the original media content into a plurality of encoded media files, determining an adaptive bit rate for providing a one of the plurality of encoded media files to a computing device, delivering the encoded media file to the computing device at the adaptive bit rate for viewing on a display device of the computing device, and measuring a quality of the displayed encoded media file based on an overall mean opinion score associated with the delivered encoded media file. The overall mean opinion score may be based on a measured playback quality associated with the encoded media file and a measured upload quality associated with the original media content. Various other methods, systems, and computer-readable media are also disclosed.

A method for transcoding an encoded video stream uploaded to a host server that includes a video transcoding engine connected to the server. At least one processor of the video transcoding engine receives an encoded video stream from a client computing device in which the encoded video stream is directly received by the video transcoding engine connected to the host server and the video transcoding engine has direct access to a non-volatile memory of the host server. The at least one processor of the video transcoding engine generates one or more transcoded files in real-time from the encoded video stream. The at least one processor transfers the one or more transcoded video files from the video transcoding engine directly to the non-volatile memory of the host server.

A method for transcoding an encoded video stream uploaded to a host server that includes a video transcoding engine connected to the server. At least one processor of the video transcoding engine receives an encoded video stream from a client computing device in which the encoded video stream is directly received by the video transcoding engine connected to the host server and the video transcoding engine has direct access to a non-volatile memory of the host server. The at least one processor of the video transcoding engine generates one or more transcoded files in real-time from the encoded video stream. The at least one processor transfers the one or more transcoded video files from the video transcoding engine directly to the non-volatile memory of the host server.

In some embodiments, a method analyzes content of a video to generate a representation for a video that represents a relationship of a bitrate to a quality measurement for the video. A plurality of candidate points on the representation are selected. Then, the method selects a profile ladder from at least a portion of the plurality of candidate points. Each profile in the profile ladder is associated with a candidate point and the profile includes a corresponding bitrate and a quality measurement for the respective candidate point. The profile ladder is used for the video.

Disclosed is a content sharing method, an electronic device and a non-transitory computer-readable storage medium, wherein the content sharing method includes: receiving a target video, determining a type of video sharing based on the target video not being a High Dynamic Range 10+ (HDR10+) standard video, selectively transcoding the target video to a different standard video based on whether the determined type of video sharing is a real-time video sharing, and sending the transcoded target video to a target receiver.

Disclosed is a content sharing method, an electronic device and a non-transitory computer-readable storage medium, wherein the content sharing method includes: receiving a target video, determining a type of video sharing based on the target video not being a High Dynamic Range 10+ (HDR10+) standard video, selectively transcoding the target video to a different standard video based on whether the determined type of video sharing is a real-time video sharing, and sending the transcoded target video to a target receiver.

A computer-implemented method and system for transcoding input video content is provided. The method includes decoding the input video content from a first format to a first set of raw video data. Encoding the first set of raw video data into an intermediate format and storing the video data in the second intermediate format. Also encoding the first set of raw video data into a third desired output format to extract video parameters and determining optimized encoding parameters for encoding the video content into the final output video. The method includes decoding the stored video data encoded into the intermediate format into a second set of raw video data and encoding the second set of raw video data into the third desired output format using the optimized encoding parameters to generate the final output video.