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• VP8 Documentation and Test Vector Contributions

  14 octobre 2010, par noreply@blogger.com (John Luther)

  Janne Salonen of the WebM team in Oulu, Finland (formerly On2 Finland) has added a tabular description of the VP8 syntax to the VP8 Bitstream Guide. The new annex provides a concise reference of the elements in the bitstream and we hope will make implementing and testing VP8 decoders easier. The updated document and source can be downloaded from our documentation page.

  We’re working on more improvements to the bitstream guide and invite other community members to help. As with the VP8 code, we gladly give attribution credit to documentation contributors and have added an AUTHORS file to the bitstream-guide Git repository.

  New VP8 Test Vectors

  The Oulu team has also produced some new VP8 test vectors. We analyzed a large set of WebM videos and produced two important corner use cases. The first produces the worst-case memory bandwidth (i.e., lots of global motion, all fractional motion vectors). The second produces the worst-case boolean decoder bin rate over dozens of consecutive frames. These vectors have been added to the VP8 test repository. Our team will consider other corner cases in the next batch of streams we add to the repository.

  Aki Kuusela is Hantro Embedded Engineering Manager at Google.

  

• Mirror not found when trying to install FFMPEG on CENTOS7

  31 octobre 2016, par Peter

  I’m on a dedicated server with Root access. not familiar with servers. Im trying to install FFMpeg on my server but following online instructions I’m getting errors can’t figure out how to solve it. So any light on this will be very appreciated.

  [root@ns335004 ~]# yum update
  
  base                                                                                                           | 3.6 kB  00:00:00     
  
  http://apt.sw.be/redhat/el7/en/x86_64/dag/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
  
  Trying other mirror.
  
  To address this issue please refer to the below knowledge base article 
  
  
  
  https://access.redhat.com/articles/1320623
  
  
  
  If above article doesn't help to resolve this issue please create a bug on https://bugs.centos.org/
  
  
  
  
  
  
  
   One of the configured repositories failed (DAG RPM Repository),
  
   and yum doesn't have enough cached data to continue. At this point the only
  
   safe thing yum can do is fail. There are a few ways to work "fix" this:
  
  
  
       1. Contact the upstream for the repository and get them to fix the problem.
  
  
  
       2. Reconfigure the baseurl/etc. for the repository, to point to a working
  
          upstream. This is most often useful if you are using a newer
  
          distribution release than is supported by the repository (and the
  
          packages for the previous distribution release still work).
  
  
  
       3. Disable the repository, so yum won't use it by default. Yum will then
  
          just ignore the repository until you permanently enable it again or use
  
          --enablerepo for temporary usage:
  
  
  
              yum-config-manager --disable dag
  
  
  
       4. Configure the failing repository to be skipped, if it is unavailable.
  
          Note that yum will try to contact the repo. when it runs most commands,
  
          so will have to try and fail each time (and thus. yum will be be much
  
          slower). If it is a very temporary problem though, this is often a nice
  
          compromise:
  
  
  
              yum-config-manager --save --setopt=dag.skip_if_unavailable=true
  
  
  
  failure: repodata/repomd.xml from dag: [Errno 256] No more mirrors to try.
  
  http://apt.sw.be/redhat/el7/en/x86_64/dag/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found

  repolist

  [root@ns335004 ~]# yum repolist all
  
  http://apt.sw.be/redhat/el7/en/x86_64/dag/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
  
  Trying other mirror.
  
  To address this issue please refer to the below knowledge base article 
  
  
  
  https://access.redhat.com/articles/1320623
  
  
  
  If above article doesn't help to resolve this issue please create a bug on https://bugs.centos.org/
  
  
  
  http://apt.sw.be/redhat/el7/en/x86_64/dag/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
  
  Trying other mirror.
  
  repo id                                  repo name                                                                     status
  
  C7.0.1406-base/x86_64                    CentOS-7.0.1406 - Base                                                        disabled
  
  C7.0.1406-centosplus/x86_64              CentOS-7.0.1406 - CentOSPlus                                                  disabled
  
  C7.0.1406-extras/x86_64                  CentOS-7.0.1406 - Extras                                                      disabled
  
  C7.0.1406-fasttrack/x86_64               CentOS-7.0.1406 - CentOSPlus                                                  disabled
  
  C7.0.1406-updates/x86_64                 CentOS-7.0.1406 - Updates                                                     disabled
  
  C7.1.1503-base/x86_64                    CentOS-7.1.1503 - Base                                                        disabled
  
  C7.1.1503-centosplus/x86_64              CentOS-7.1.1503 - CentOSPlus                                                  disabled
  
  C7.1.1503-extras/x86_64                  CentOS-7.1.1503 - Extras                                                      disabled
  
  C7.1.1503-fasttrack/x86_64               CentOS-7.1.1503 - CentOSPlus                                                  disabled
  
  C7.1.1503-updates/x86_64                 CentOS-7.1.1503 - Updates                                                     disabled
  
  base/7/x86_64                            CentOS-7 - Base                                                               enabled:  9,007
  
  base-debuginfo/x86_64                    CentOS-7 - Debuginfo                                                          disabled
  
  base-source/7                            CentOS-7 - Base Sources                                                       disabled
  
  c7-media                                 CentOS-7 - Media                                                              disabled
  
  centosplus/7/x86_64                      CentOS-7 - Plus                                                               disabled
  
  centosplus-source/7                      CentOS-7 - Plus Sources                                                       disabled
  
  cr/7/x86_64                              CentOS-7 - cr                                                                 disabled
  
  dag/7/x86_64                             DAG RPM Repository                                                            enabled:      0
  
  epel/x86_64                              Extra Packages for Enterprise Linux 7 - x86_64                                enabled: 10,764
  
  epel-debuginfo/x86_64                    Extra Packages for Enterprise Linux 7 - x86_64 - Debug                        disabled
  
  epel-source/x86_64                       Extra Packages for Enterprise Linux 7 - x86_64 - Source                       disabled
  
  epel-testing/x86_64                      Extra Packages for Enterprise Linux 7 - Testing - x86_64                      disabled
  
  epel-testing-debuginfo/x86_64            Extra Packages for Enterprise Linux 7 - Testing - x86_64 - Debug              disabled
  
  epel-testing-source/x86_64               Extra Packages for Enterprise Linux 7 - Testing - x86_64 - Source             disabled
  
  extras/7/x86_64                          CentOS-7 - Extras                                                             enabled:    393
  
  extras-source/7                          CentOS-7 - Extras Sources                                                     disabled
  
  fasttrack/7/x86_64                       CentOS-7 - fasttrack                                                          disabled
  
  nux-dextop/x86_64                        Nux.Ro RPMs for general desktop use                                           disabled
  
  nux-dextop-testing/x86_64                Nux.Ro RPMs for general desktop use - testing                                 disabled
  
  plesk-php-5.6                            PHP v 5.6 for Plesk - x86_64                                                  enabled:     31
  
  plesk-php-7.0                            PHP v 7.0 for Plesk - x86_64                                                  enabled:     28
  
  updates/7/x86_64                         CentOS-7 - Updates                                                            enabled:  2,560
  
  updates-source/7                         CentOS-7 - Updates Sources                                                    disabled
  
  repolist: 22,783

  I also tried :

  sudo yum clean metadata
  
  sudo yum clean all

  But still having same 404 Error.

  Thanks.

• Unable to build solution in Visual Studio 2019 : The BaseOutputPath/OutputPath property is not set for project

  23 juillet 2022, par mhadi

  In an effort to integrate FFmpeg with Unity, I have been trying to build a solution file in Visual Studio 2019. However, I am currently unable to resolve the following error when I try to build in Visual Studio :

  


  


  The BaseOutputPath/OutputPath property is not set for project
'FFmpegUnityInterop.vcxproj'. Please check to make sure that you have
specified a valid combination of Configuration and Platform for this
project. Configuration='Release' Platform='x64'. This error may
also appear if some other project is trying to follow a
project-to-project reference to this project, this project has been
unloaded or is not included in the solution, and the referencing
project does not build using the same or an equivalent Configuration
or Platform.

  


  


  I have tried a number of solutions, including :

  


  

  1. Manually adding the OutputPath in 'FFmpegUnityInterop.vcxproj'
<outputpath>bin/Build/</outputpath>.

  


  2. In the FFmpegUnityInterop.vcxproj file, moving the ProjectProperty with my preferred configuration and platform combination to the very top of the list of ProjectProperties (there are 8 of them).

  


  3. Building with different configuration and platforms.

  


  4. Trying to build from VS Dev Command prompt using the following command :
MSbuild.exe "FFmpegUnityInterop.sln" /p:Configuration=Release /p:Platform="x64", as well as from the Visual Studio IDE.

  


  5. Tried setting the OutputPath in the command line command
(>MSbuild.exe FFmpegUnityInterop.sln /p:Configuration=Release /p:Platform="AnyCPU" /p:OutputPath = bin\Debug), only to have
MSbuild throw error MSB1008 (MSBUILD : error MSB1008 : Only one
project can be specified.)

  


  6. Setting the configuration and platform manually in the Configuration Manager GUI in
Visual Studio.

  


  


  I may have missed an attempted solution or two above, but I've tried most of the suggestions I found online, only to get the error pasted above. Part of me suspects that my compilation of FFmpeg libraries didn't execute fully, but I unfortunately do not have enough experience to verify that. Any suggestions to resolve this would be much appreciated.

  


  PS. The project was developed privately by a private entity that is currently unreachable