首先是介紹編碼
x265是基於HEVC標準開發的開源編碼器
高效率視頻編碼(High Efficiency Video Coding,簡稱HEVC)是一種視訊壓縮標準,H.264/MPEG-4 AVC的繼任者。
更多詳細可參考 wiki HEVC
stevenweng09 發表於 2015-1-29 02:16
請問 果青 還有 strike the blood
是色彩用8bit還是 10bit (Hi10P)???
DXVA2 HEVC Main10 (10-bit) support
LAV Video now supports 10-bit HEVC decoding through DXVA2, on hardware which supports the Main10 profile!
It has been developed and tested on the NVIDIA GTX 960, which is the first desktop GPU with a full hardware HEVC decoder, and it works quite nice and fast (4k @ 100-120 fps)
At this time I have no information if it also works on Intels Main10 decoding on the Broadwell iGPU, since I do not have access to such hardware.
Note that at this time 10-bit decoding is limited to DXVA2 Copy-Back mode, because the video renderers did not want to cooperate in Native 10-bit mode.
DXVA2 Copy-Back "Direct" mode
To reduce the CPU overhead and the speed limitations of the DXVA2 Copy-Back mode, LAV Video 0.64 introduces a new "Direct" mode.
Direct Mode reduces the CPU overhead by up to 50%, resulting in significantly reduced CPU usage figures.
The concept is simple: When possible, LAV Video will do one processing step less, and try to copy the video image from the GPU to the video renderer as directly as possible.
This has a few limitations however. It only works in specifically designed output paths, specifically NV12 decoding -> NV12 output, P010 decoding -> P010 output, and P010 decoding -> NV12 output.
In addition, direct mode cannot be used when YADIF deinterlacing is required.
Direct Mode is not an option, it'll simply turn on when its possible to be used, and turn off when not (ie. with YADIF or when an unsupported conversion is required).
More...
Everything else should be pretty self-explanatory. Nothing too fancy. RTMP is now officially supported using the same parameter syntax as librtmp/rtmpdump use. The feature was contributed by the MPC-HC authors.
Opus in MPEG-TS streams can now be demuxed and decoded. To make this possible, Opus is now decoded by the "native" ffmpeg Opus decoder, and no longer libopus.
Soon..
I have some plans to work on a few of the long standing feature requests and a few of my own ideas very soon, so a new feature push may not be too far out.
In any case, have fun!
PS:
Impatient people, don't even allow an hour to post the versions everywhere and write a post, jeez.
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