X265 presets, For all other purpses -preset slow is you best bet
X265 presets, Oct 23, 2021 · This post presents a return on investment view of choosing an x265 preset that delivers the optimal blend of encoding cost and storage and bandwidth savings. Preset and tune have special Oct 20, 2021 · How to choose a bitrate ladder for x265 - an ROI-based analysis of the various bitrates and resolutions you might want to choose to maximize the RD tradeoff. The CLI uses getopt to parse the command line options so the short or long versions may be used and the long options may be truncated to the shortest unambiguous abbreviation. Jan 18, 2025 · Master encoding presets for optimal speed-quality balance. Your optimal settings may vary depending on Jan 6, 2026 · Presets are usually adressed by their corresponding names like fast, medium, slow etc. This one is probably the toughest to decode, as it takes a little guesswork. Overview This guide provides configuration recommendations for x265 (HEVC) video encoding within FFmpeg workflows. Compare x264, x265, and AV1 presets for different use cases. For this example I'll be using Scarface as it was encoded with x265 and HDR. Note: These recommendations are somewhat a matter of opinion and based on community consensus and testing. The preset also effects the output file size. Your optimal settings may vary depending on Presets ¶ x265 has ten predefined --preset options that optimize the trade-off between encoding speed (encoded frames per second) and compression efficiency (quality per bit in the bitstream). It does a reasonably good job of finding the best possible quality without spending excessive CPU cycles looking for the absolute most efficient way to achieve Apr 18, 2024 · As with CRF, choose the slowest -preset you can tolerate, and optionally apply a -tune setting. Source-independent settings --preset veryslow or slower --no-rect for slower computers. Users of the API must pass x265_param_parse () the full option name. Note that when using faster presets with the same target bitrate, the resulting quality will be lower and vice-versa. slow (6) is a sweet spot in regards to speed/quality. --no-amp is similar to rect, although it seems to be slightly more useful. When we first look at the encode settings it's going to look like a jumbled mess. For all other purpses -preset slow is you best bet. --no-open-gop --no-cutree since this seems to Command Line Options Note that unless an option is listed as CLI ONLY the option is also supported by x265_param_parse (). The default preset is medium. The x265 encoder offers superior compression compared to x264, making it ideal for high-resolution content and archival purposes. Default is medium. Preset Options Presets x265 has ten predefined --preset options that optimize the trade-off between encoding speed (encoded frames per second) and compression efficiency (quality per bit in the bitstream). For high-quality encodes, use medium or below. The official documentation for x265 is very good, so this page will only cover recommended values and switches. --no-open-gop --no-cutree since this seems to Jan 18, 2025 · Master encoding presets for optimal speed-quality balance. Passing Options Generally, options are passed to x265 with the -x265-params argument, as in -x265-params "keyint=1:lossless=1". There's a slight chance it'll prove useful, but it probably isn't worth it. It does a reasonably good job of finding the best possible quality without spending excessive CPU cycles looking for the absolute most efficient way to achieve that quality The official documentation for x265 is very good, so this page will only cover recommended values and switches. The slower the better, use whatever speed you are willing to tolerate.
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