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#141 | Link |
Registered User
Join Date: May 2014
Posts: 292
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Why is the -speed-mode 3 option missing in the updated ffmpeg? > Https://forum.doom9.org/showthread.p...99#post1867899
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Win10x64, Xeon E5450, GTX 750 2GB, DDR3 8GB. |
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#142 | Link | |
Registered User
Join Date: Oct 2017
Posts: 56
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#143 | Link |
Registered User
Join Date: Jul 2005
Posts: 42
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Hi Jonatan,
Is it possible to build an ffmpeg (or if not, an xvcenc/xvcdec) that would run on XP 32-bit? I have an older PC that I would like to do some testing on. In my earlier tests, xvc is very efficient for low bitrate, low resolution situations. On this older PC, xvc seems ideal. Any assistance would be much appreciated. If this can be built, I will run some tests and share my results here. Hopefully that will assist in development. Thanks. |
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#144 | Link |
German doom9/Gleitz SuMo
Join Date: Oct 2001
Location: Germany, rural Altmark
Posts: 7,175
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According to one of the developers I just contacted via IRC, the support for Windows XP in ffmpeg has been dropped quite a while ago (with version 4), to improve the threading.
In addition, many linked libraries today will have their own restrictions (I remember x265 requiring special options, other codecs may not even care). So I doubt you will find any recent ffmpeg version still supporting it. Last edited by LigH; 24th June 2019 at 07:49. |
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#145 | Link | |
Moderator
![]() Join Date: Jan 2006
Location: Portland, OR
Posts: 4,955
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Quote:
For decoding, yeah, that can make sense as a low bar. But for a forthcoming codec, the market is already 64-bit dominant. Pretty much everything has shipped as 64-bit for a while now. Looking at the latest Steam hardware survey, 96% of gaming PCs are on a 64-bit OS. The results would be interesting, but even if xvc barely worked on 32-bit, I don't know if that would negatively impact its prospects. |
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#146 | Link | |
Registered User
Join Date: Oct 2017
Posts: 56
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Quote:
It is possible to build xvc for 32 bit. For Visual Studio 14 2015, you can follow the steps at https://github.com/divideon/xvc but replace Code:
cmake -G "Visual Studio 14 2015 Win64" .. Code:
cmake -G "Visual Studio 14 2015" .. This is built from the master branch of https://github.com/divideon/xvc. I would be happy to hear how the experiment turns out. ![]() |
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#148 | Link |
German doom9/Gleitz SuMo
Join Date: Oct 2001
Location: Germany, rural Altmark
Posts: 7,175
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I believe xvc may not compile well in GCC 10.1:
Code:
In file included from ../src/xvc_common_lib/transform_data.cc:22: ../src/./xvc_common_lib/transform_data.h:32:16: error: 'int16_t' does not name a type 32 | static const int16_t kDct2Transform4[4][4]; | ^~~~~~~ ../src/./xvc_common_lib/transform_data.h:33:16: error: 'int16_t' does not name a type 33 | static const int16_t kDct2Transform8[8][8]; | ^~~~~~~ ... |
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#149 | Link |
Registered User
Join Date: Oct 2017
Posts: 56
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Thanks LigH for reporting.
The problem was fixed in https://github.com/divideon/xvc/comm...67a85f4e858cd4 |
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#154 | Link | ||
Registered User
Join Date: Oct 2017
Posts: 56
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Quote:
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In EVC there are actually more features directly brought in from xvc such as a mode for determining the output order of pictures (Picture Order Count derivation) and a mode for implicit derivation of which reference picture to use for inter prediction. / Jonatan |
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Tags |
codec, compression, video codec, video encoding, xvc |
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