Converting .h263 videos to .h264 format.
Converting H.263 Video Files directly to H.264 Encoded Video Files (.h263 to .h264 conversion) is certainly possible and should be quite straightforward.
Try using video editing programs or (online) conversion tools, such as the Freemake Video Converter or FFmpeg, which allow users to import H263 videos and export them in H264 format.
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