Video Call Recording Codec Adaptation for Media Container Compatibility
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Solution Overview
Problem
Electronic devices face challenges in recording video calls when the codecs used are not supported by the designated media container format, such as the MP4 format, leading to inability to store the video call in a playable format on various devices.
Innovation Solution
The device records a video call using a first video codec and a first audio codec during the call, and if the first audio codec is not supported by the media container, it switches to a second audio codec that is supported, allowing the recording to be stored in a compatible media container format like MP4.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device uses a first audio codec for video call that provides high quality, then the voice call quality is improved, but the codec may not be supported by the designated media container format, making recording impossible
Solution Approach 1:
The audio encoding process is segmented into two separate encoding paths: one for real-time video call transmission using the first audio codec, and another for recording using the second audio codec. This segmentation allows each path to use the most appropriate codec for its specific purpose without conflict.
Solution Approach 2:
The patent introduces an intermediary conversion process where the first audio codec output is converted to the second audio codec format. This intermediary step enables compatibility with the media container while preserving the original high-quality audio stream for the video call.
2Reliability
If the electronic device records video call using the first audio codec that is not supported by the media container, then the recording quality matches the call quality, but the recorded file cannot be stored or played on various devices
Solution Approach 1:
The patent changes the audio codec parameter from the first unsupported codec to the second supported codec specifically for the recording path. This parameter change enables the recorded file to be stored in the designated media container format while maintaining audio quality through proper encoding settings.
3Adaptability or versatility
If the electronic device switches from the first audio codec to the second audio codec for recording, then the media container compatibility is improved, but additional encoding processing is required
Solution Approach 1:
The system performs preliminary action by pre-configuring multiple audio codec support and pre-establishing the dual-encoding architecture before the video call begins. This preparation reduces the complexity during actual recording operations, as the conversion process is already set up and optimized.
Data Source
AI summary
A portable communication device supporting video calls is provided. The portable communication device can be configured to perform a video call on the basis of a first video codec and a first audio codec, receive, through a touch display, a request for recording the video call, and, if the first audio codec is not supported by a designated media container, record the video call on the basis of the first video codec and a second audio codec supported by the media container.