30results about How to "Save transcoding time" patented technology

The invention provides an H.264-to-H.265 video transcoding method which comprises an H.264 decoding process and an H.265 encoding process. According to the H.264 decoding process, code streams conforming to the H.264 standard are completely decoded into a pixel domain, and the encoding macro block type, the encoding block mode and the residual sum of each macro block of all frames I and the encoding macro block type, the motion vector, the reference frame and the residual sum of each macro block of all frames P are extracted in the decoding process. According to the H.265 encoding process, H.265 encoding is carried out according to the H.264 decoding result to obtain H.265 video, corresponding processing according to CTU setting and frame types is included, search branches are properly reduced, and encoding complexity is reduced. Therefore, video transcoding time can be effectively reduced under the condition of guaranteeing that video quality is slightly reduced and the code rate is slightly increased, and popularization of the H.265 standard and network bandwidth saving are facilitated.

The invention is suitable for the technical field of audio-video playing, and discloses a method and a system for parallel trans-coding of video slicing. The method comprises the following steps of: disassembling an original video file into a plurality of first video segments; simultaneously trans-coding the first video segments after disassembling into second video segments; and assembling a plurality of the second video segments after trans-coding into a video file with a new format. In the method, by disassembling the original video file into the plurality of the first video segments, simultaneously trans-coding the first video segments after disassembling into the second video segments, and assembling the plurality of the second video segments after trans-coding into the video file with the new format, not only the trans-coding time is saved and the trans-coding efficiency is improved, but also the texture of a picture is well ensured, and the method and the system are favorable for popularizing an audio-video playing device.

The invention discloses a method for transocding distribution based on a cloud platform, and the method for transcoding distribution is used for improving transcoding efficiency. The method for transcoding distribution comprises the following steps: obtaining transcoding complexity of each video clip to be transcoded and transcoding performance values of calculating equipment which form the cloud platform; according to the transcoding complexity of each video clip to be transcoded and the transcoding performance values of the calculating equipment, obtaining a needed first average time of each one of the calculating equipment carrying out transcoding for the video clip distributed for the each one of the calculating equipment; judging whether needed transcoding time of a first calculating device for transcodiing a first video clip is larger than the first average time; if a result is no, distributing the first video clip to the first calculating device to carry out transcoding. The invention further discloses a device used for achieving the method for transcoding distribution and a method and device for transcoding.

A distributed video transcoding method and an associated device and system are disclosed. The method is characterized by comprising the steps in which, a submit transcoding client carries out segment identification of duration of video files, obtains each segment duration and segment initial time of each segment duration, and a transcoding scheduling end transmits a transcoding executing message to each target transcoding executing end, each transcoding executing message including a storage address of the video file, a video ID, the segment duration and the segment initial time of the segment duration; each target transcoding executing end acquires the video file according to the storage address and the video ID that are included in the received transcoding executing message, transcodes the corresponding video in the video file defined by the segment duration and the segment initial time of the segment duration that are included in the transcoding executing message, and acquires transcoding results; and each target transcoding executing end merges the obtained transcoding results and obtains the video file. The invention can shorten the video transcoding time and improving the video transcoding efficiency.

The invention discloses a video file cutting method for distributed transcoding, and a distributed transcoding method. The method comprises the steps: receiving a source file; carrying out the de-multiplexing of the received source file, and obtaining a video file and an audio file; taking GOP as a unit to segment the video file, and obtaining segmented video files; calculating the time duration when a plurality of transcoding computers process the segmented video files; calculating the segmented video files according to the calculated time duration of each transcoding computer; and transmitting the segmented video files to the corresponding transcoding computers according to the calculation results. The methods provided by the invention enable each transcoding computer to complete transcoding as simultaneously as possible, save transcoding time, and improves the distributed transcoding efficiency.

The invention discloses a distributed video transcoding method. The distributed video transcoding method comprises the following steps: a main server segments a video file uploaded by a user to form video segments; a distributed storage device receives the video segments sent by the main server and analyzes the video segments to obtain key/value pairs; a corresponding number of key/value pairs, corresponding to a transcoding task quantity, are acquired from a server according to the transcoding task quantity; the video segments in the distributed storage device are downloaded according to the key/value pairs; the downloaded video segments are transcoded; the distributed storage device receives the video segments after being transcoded from the server and then analyzes the transcoded video segments to obtain transcoded key/value pairs; the main server downloads transcoded video segments from the distributed storage device according to the transcoded key/value pairs and then combines the downloaded video segments. Based on the distributed video transcoding method, the video transcoding time is effectively reduced, and the transcoding efficiency is improved. The invention also discloses a distributed video transcoding device.

The embodiment of the application discloses a transcoding method and apparatus. The method comprises: a corresponding relationship between a plurality of definition values and resolution ratios is established in advance; a first definition value and a second definition value are selected from the plurality of definition values and a first resolution ratio and a second resolution ratio that correspond to the first definition value and the second definition value respectively are determined; according to the first resolution ratio and the second resolution ratio, transcoding is carried out on a first part content of a media file according to a preset transcoding rule, and a first real-time quantization parameter value and a second real-time quantization parameter value in the transcoding process are recorded; whether the first real-time quantization parameter value and the second real-time quantization parameter value meet a preset checking rule is determined; if not, the first resolution ratio and/or the second resolution ratio are adjusted; and according to the adjusted first resolution ratio and/or the second resolution ratio, transcoding is carried out on the part without transcoding in the media file. The embodiment of the application discloses a transcoding method and apparatus, so that the transcoding speed of the media file can be increased.