Media Transcoding Resolution Adjustment for Playback Smoothness
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Solution Overview
Problem
Existing transcoding methods fail to ensure smooth playback of media files by prioritizing maximum coding rates over resolution, leading to compromised display quality in limited bandwidth environments.
Innovation Solution
A method and apparatus that determine different definition levels based on initial media file resolution, pre-code the file, and adjust resolutions if the pre-coding rate exceeds a preset threshold, ensuring smooth playback by transcoding according to adjusted resolutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the maximum coding rate is used for transcoding to ensure smooth playback, then the playback smoothness is improved, but the resolution of the media file deteriorates
Solution Approach 1:
The patent performs pre-coding before actual transcoding to calculate the instant coding rate in advance. This preliminary action allows the system to determine whether the current content can be clearly played under preset resolution and coding rate parameters, enabling proactive adjustment of transcoding parameters before the actual transcoding process begins
Solution Approach 2:
The patent dynamically adjusts transcoding parameters based on real-time calculations. The system calculates the instant coding rate dynamically and compares it with the maximum coding rate, then adjusts the resolution or coding rate accordingly. This dynamic adjustment ensures that the media file is played smoothly while maintaining the resolution of the content
2Manufacturing precision
If the resolution is increased to maintain content quality, then the display quality is improved, but the coding rate increases leading to playback buffering
Solution Approach 1:
The patent implements a feedback mechanism where the instant coding rate is calculated and compared with the maximum coding rate. Based on this feedback, the system determines whether to adjust the resolution or coding rate. This closed-loop control ensures that the coding rate remains within acceptable limits while maintaining the highest possible resolution for clear playback
Data Source
AI summary
A method and an apparatus for transcoding are disclosed. The method includes obtaining an initial resolution of a media file; determining a first definition level and a second definition level corresponding to the media file; determining a first resolution corresponding to the first definition level and a second resolution corresponding to the second definition level; pre-coding the media file using a first preset rule to obtain a first pre-coding rate corresponding to the first definition level and a second pre-coding rate corresponding to the second definition level based on the first resolution and the second resolution; adjusting the first resolution and the second resolution if the first pre-coding rate is greater than the preset coding threshold; and transcoding the media file using the first preset rule based on the adjusted first resolution and the adjusted second resolution.