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AWS Elemental MediaConvert is a video processing service that provides powerful tools for broadcasters and content providers to transcode video into various formats, optimize video for any device, and implement advanced video features such as adaptive streaming, DRM, and captions.
To improve the video quality with Elemental MediaConvert, consider the following options:
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Source video quality: Make sure your source video is of the highest quality possible. MediaConvert can't improve the source video's quality; instead, it works to maintain the quality during the transcoding process.
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Choose the right codec: Modern codecs like H.265 (HEVC) can provide superior quality at the same bit rate compared to older codecs like H.264 (AVC). However, ensure that the target devices or platforms for the video support this codec.
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Bitrate Settings: Higher bitrates generally produce better video quality. However, this also increases the file size and may cause buffering issues on lower-speed networks. Use the "Quality-defined variable bitrate" (QVBR) mode, an AWS-specific setting, to manage this balance. QVBR automatically adjusts the bitrate to maintain a defined quality level, giving you the best of both worlds.
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Resolution and Aspect Ratio: Adjust these settings based on the platform where the video will be viewed. For instance, a video for mobile devices might not need as high a resolution as a video for viewing on a 4K television.
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Frame rate: Frame rate can also affect the perceived video quality. A higher frame rate can make a video seem smoother but increases the file size. Ensure you choose the best frame rate for your specific use case.
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Advanced Encoding Settings: AWS Elemental MediaConvert offers advanced settings that can help fine-tune the video quality, like GOP size, scene change detection, and color space conversion.
Remember, while adjusting these settings can help improve video quality, there's always a balance between quality, file size, and compatibility with various devices and network conditions.
For more information about QVBR, you can read: Using the QVBR rate control mode
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