3results about How to "Save download time" patented technology

The invention belongs to the technical field of computer software and data processing, and provides a differential upgrading method for a compressed file, which is divided into a differential stage and a reduction stage: the differential stage: decompressing an original compressed package of a starting version and an original compressed package of a target version; unifying and standardizing file permissions for the two decompressed folders, and modifying, accessing and changing timestamps; re-compressing to generate a first new compressed file and a second new compressed file with byte-level certainty; generating a first difference file based on the difference between the standardized directory structure and the content; comparing the second new compressed file with the original compressed file of the target version, performing lossless analysis on the ZIP metadata, and performing structured modeling on difference information to generate a second difference file; in the reduction stage, standardization, first differential reduction, recompression and second differential driven metadata accurate reconstruction are sequentially executed, and a result completely consistent with the byte level of the original compressed file of the target version is output. According to the method, the differential compression ratio and the restoration fidelity can be improved.

This invention provides a video download method, apparatus, electronic device, and readable storage medium. The method includes: in response to detecting that a first video downloaded by a client is interrupted due to transcoding on the server side, obtaining the download progress of the first video already downloaded by the client; the download progress is used to indicate the amount of data downloaded and is associated with the identification information of the last downloaded video frame; based on the download progress, determining a set of segmented videos to be downloaded from a second video generated after transcoding the first video, and downloading the set of segmented videos; matching the last downloaded video frame of the first video with the video frame content of the second video to determine the mapping time point corresponding to the last video frame in the second video; in response to playing to the last video frame of the first video, resuming playback of the second video from the mapping time point.

The application provides a decentralized downloading method for sharing large files, which comprises the following steps: deploying a Transmission software in a server and each user terminal, generating a seed file for a to-be-downloaded file by using the software in the server; virtually dividing the to-be-downloaded file into virtual blocks with equal sizes, and writing index information and Hash verification codes of each virtual block into the seed file; accessing the server by the user terminal, and parsing the seed file by using the Transmission software of each user terminal to obtain the index information and Hash verification codes, download corresponding file segments from the to-be-downloaded file, and generate seed segment files for the file segments; and accessing other user terminals by the user terminal, parsing the seed segment files of the other user terminals by using the Transmission software of the user terminal, and downloading corresponding file segments. The application expands the uploaders from only the server to the user terminals, that is, the user terminals are downloaders and uploaders at the same time, and realizes the decentralization of downloading.