![]() ![]() HEVC/H.264” especially the section “Encoding quality” (2). Also see rbultje's blog “VP9 encoding/decoding performance vs. Please see Moscow State University's research “HEVC/H.265 Video Codecs Comparison” especially 5.3.3 Figure 17 on page 24 (1). Using both this metric and subjective tests, HEVC is superior at any given SIMM value/bitrate. H265 is an imbalanced codec that shines compared to H254 when given computational ability (time) and when allowed to slightly reduce quality.Įncoding quality, while mostly subjective, can actually be measured objectively via SIMM (structural similarity). H264 is an incredibly well-balanced codec, excelling in all areas. ![]() To understand the use cases where H265 currently excels, consider that codecs are designed to balance quality, encoding/decoding time and file-size (bitrate). In practice, this promise has yet to achieve a full realization. Next generation codecs promise identical quality to H264 at half the file size. ![]() Notable H264 Implementations: x264 (used by FFmpeg and VideoLAN) Notable H265 HEVC Implementations: x265 (used by FFmpeg), Intel MSS HEVC Software/GAcc H265/HEVC is a viable alternative to H264 encoding in some circumstances. ![]()
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