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Next-Gen Video Encoding: x265 Tackles HEVC/H.265

Posted by timothy on from the relocating-the-bottlenecks dept.

An anonymous reader writes "Late last night, MulticoreWare released an early alpha build of the x265 library. x265 is intended to be the open source counterpart to the recently released HEVC/H.265 standard which was approved back in January, much in the same way that x264 is used for H.264 today. Tom's Hardware put x265 through a series of CPU benchmarks and then compared x265 to x264. While x265 is more taxing in terms of CPU utilization, it affords higher quality at any given bit rate, or the same quality at a lower bit rate than x264." (Reader Dputiger writes points out a comparison at ExtremeTech, too.)

2 of 104 comments (clear)

  1. Re:Reference encoder with some small tweaks by StreamingEagle · · Score: 5, Informative

    The HM reference encoder takes roughly 40 seconds to encode one frame of 1080P video on a dual Xeon (16 core) server. x265 can encode 1080P at roughly 11 frames per second today. The project is still early in development, and there are many features (lookahead, B-frames, rate control, etc) and efficiency/performance optimizations left to be done, but we are making good progress. I would encourage you to try it before reaching any conclusions.

  2. Re:A shame that they/he 'stole' the x265 name,.. by StreamingEagle · · Score: 5, Informative

    This project is not a surprise to any of the x264 developers - we have been in discussions with them for many weeks, and we have an agreement which allows us to utilize x264 code in x265. The x264 developers haven't had a chance to make contributions yet, as we just opened the project up to participation by the open source development community. We welcome their participation, and will do everything we can to enable and encourage it.