如何正確解出Hi10P的影片(MPEG4-AVC 10-bit)

pureland

本文章最後由 pureland 於 2012-1-8 14:57 編輯

更新至LAV Filters 0.44
加入Intel QuickSync Decoder
建議Sandy Bridge以上等級使用~
注意事項詳見nevcairiel的說明...

LAV Video
- Added Intel QuickSync hardware decoder
- Added support for YADIF with hardware decoding
- Added support for Dirac decoding
- Added support for DNxHD decoding
- Added support for v210/v410 output
- Improved dynamic reconnection with post-processing filters
- Fixed a seeking related corruption issue with MPEG4-ASP

Intel QuickSync Decoder
The decoder is based on Eric Gur's decoder which is also used in ffdshow.
In theory, it should work with all Intel GPUs since Penryn, however i can only guarantee for Sandy Bridge based GPUs. Note, however, that it only works if the GPU is active, which means you need a monitor connected, or "fake" it.
Its limited to Windows Vista/7, it does NOT work on Windows XP.

For Multi-GPU setups, you can read this:
http://forum.doom9.org/showthread.php?p=1532786#post1532786

For general questions about QuickSync decoding, you can also refer to this thread:
http://forum.doom9.org/showthread.php?t=162442

If it doesn't work for you, the only things i can recommend checking is that the GPU is active and the drivers are up2date.
I do not have many experience with weird setups, i have monitors connected to my Intel GPU, and thus no experience with "fake" setups or Laptops with switchable graphics. You're free to ask, of course, but i cannot help you.

For everyone building their own version:
This build is using v0.22 of Erics decoder, which is r18 in his repository.

Known Issues:
- v210 output to madVR does not work properly. I think thats a madVR bug, but i cannot be sure until madshi gets back to me.

pureland

剛好趁這個機會介紹一下
Intel SandyBridge hardware accelerated FFDShow decoder (H264/VC1/MPEG2)
Doom9討論串:http://forum.doom9.org/showthread.php?t=162442
目前有幾種方式可以使用到Intel QuickSync Decoder
1.最新版的FFDShow
2.最新版的LAV Filters
3.最新版的PotPlayer

ISB解碼器是一款video decoder, 他是由任職於Intel Processor Client Application Engineer的egur(doom9論壇的帳號)所開發的, 僅針對Intel整合GPU的微處理器所支持. 為了完善使用Intel QuickSync. 他可以允許調用DXVA去加速. 這個decoder僅針對Intel SNB系列或以上的微處理器所支持, 具有發展潛力. 而且愈來愈成熟.

Requirements:
1. SandyBridge (2nd Generation Core i3/i5/i7) or newer. Older platforms may work but they do not have a good enough HW acceleration or memory bandwidth rendering this solution useless.
2. Latest Intel graphic drivers. Intel GPU must either be the primary GPU, extended display or use Lucid Virtu.
3. Windows 7 (32/64) or newer OS. Should work in Vista but I can't test this.

pureland

本文章最後由 pureland 於 2012-1-29 12:11 編輯

更新至LAV Filters 0.45
加入DXVA2 "copy back" decoder
注意事項詳見nevcairiel的說明...
LAV Video decoder越來越強大了~
N卡可用CUVID, A卡可用DXVA2, Intel內顯可用QuickSync
不想硬解用CPU軟解都OK, 任君選擇XD

LAV Video
- New DXVA2 "copy back" decoder (see release notes)
- Updated Intel QuickSync decoder (r29)
- Multi-threaded decoding for RV30/40, UtVideo and DNxHD
- Support for the "FCC" color matrix
- Improved Dirac support
- CUVID support for MPEG-4 ASP (experimental)
- Support for Intel Indeo 4, MS Video 1, 8BPS, LOCO, ZMBV, VCR1, AASC

New and note-worthy? Well....

DXVA2 "copy back"
In our series of hardware decoders, the new DXVA2 decoder now features hardware decoding also for AMD/ATI.
Its a "copy back" (or "renderless") decoder - that means all frames are copied back from the GPU to normal memory.

Sadly, however, AMD/ATI cards suffer from a serious performance penalty, which prevents them from showing their full potential. The decoder is fully Blu-ray compliant, and even goes beyond that, however playing 60fps movies will most likely not work fluidly.
H.264, VC-1 and MPEG-2 are fully supported (progressive and interlaced), as long as your hardware can keep up. Very old AMD/ATI cards, like 3000 series and below, might not be able to use this decoder. 4000 and up seem to be working ok.

I do have plans to work on a "native" DXVA2 decoder, which does not need to copy the frames back from the GPU, avoiding this performance bottleneck - however that goes with the loss of the flexibility of course. No post-processor, only EVR, etc.

For everyone else, i recommend to stick to your native decoders (CUVID/QuickSync), as they generally work better and faster then DXVA2.

Known Issues:
- Interlaced H.264 on Intel can show image corruption
- Some MPEG-2 streams show image corruption (all GPUs)

There is also the potential for crashing the GPU driver. It happened mostly on VC-1 interlaced, and all cases i encountered i also fixed, but if it happens, just let me know, and i'll look into it.

MPEG-4 ASP in the CUVID decoder
There seems to be an issue in the latest NVIDIA drivers that cause the decoder to not work on most MPEG-4 ASP files!
Older drivers, like 270 series, seem to be working OK.

Its experimental, use it at your own risk, its off by default.

And the rest...
Everything else is pretty much standard changes, a few new video formats supported, a number of improvements inherited from ffmpeg, the usual number of bugs fixed.

I still didn't get around to re-writing the installer, but i hope i can get the motivation to do it for the next big release.
What else is up next? I haven't decided. There is some features on the table, audio mixing, dvd support, some subtitle work .. we'll see.

Take care.

fish2299373

學習了，謝謝分享

gygt928

喔！天呀！

建議測試環境(CPU)
10-bit  4:2:0影片:雙核心以上
10-bit 60fps影片:四核心以上
2160p 50fps影片:六核心以上

看來我的老古董也要升級才可以！