Sur d’autres sites (10756)

• avfilter/vf_colormatrix : add yuv444p support

  6 juillet 2015, par Paul B Mahol

  avfilter/vf_colormatrix : add yuv444p support
  Signed-off-by : Paul B Mahol <onemda@gmail.com>
  

  • [DH] libavfilter/vf_colormatrix.c

• ffserver webm streaming issue with Firefox browser

  1er septembre 2015, par Venkatesh Babu Dargah

  I’m attempting to cast my desktop screen to an ffserver and stream it as a webm. I’m using the following ffserver configuration :

  HTTPPort 8091
  MaxHTTPConnections 20000
  MaxClients 10000
  MaxBandwidth 10000

  CustomLog -

  File /tmp/feed1.ffm
  FileMaxSize 1G
  ACL allow 127.0.0.1

  Format webm
  Feed feed1.ffm

  Video settings

  VideoCodec libvpx
  
  VideoFrameRate 30
  
      VideoBitRate 512
  
  VideoSize 320x240
  
      MaxTime 0
  
      AVOptionVideo me_range 16
  
      AVOptionVideo qdiff 4
  
      AVOptionVideo qmin 4
  
      AVOptionVideo qmax 40
  
      AVOptionVideo quality good
  
      AVOptionVideo flags +global_header

  Streaming settings

      PreRoll 10
  
      StartSendOnKey 

  Audio settings

      AudioCodec libopus
  
      AudioBitRate 128
  
      AudioSampleRate 48000
  
      AVOptionAudio flags +global_header
  
      Metadata author "author"
  
      Metadata copyright "copyright"
  
      Metadata title "Web app name"
  
      Metadata comment "comment"

  I am using ffmpgeg to capture video from my desktop using
  ffmpeg -f v4l2 -s 320x240 -r 25 -i /dev/video0 -f alsa -ac 2 -i hw:0 http://localhost:8091/feed1.ffm/

  i am able to see this stream in chrome.
  but Firefox is showing message as MIME type not supported and not able to decode.
  but if I run the same webm video from static file it is playing in firefox
  but if I try to access via http://localhost:8091/live1.webm i am getting MIME type error,
  please let me know what additional settings need to be done in Firefox to play webm videos from my server address and port.
  Again I am reiterating that this is playing ok in chrome but not in Firefox.

  Please reply.

  hi all,

  i am able to play in firefox also after i changed audiocodecs to libvorbis and removing AudioChannels parameter from ffserver config file.

  thanks for your attention

• libavcodec : fix -Wint-conversion in vulkan

  20 décembre 2023, par Sam James

  libavcodec : fix -Wint-conversion in vulkan
  FIx warnings (soon to be errors in GCC 14, already so in Clang 15) :
  
  ```
  
  src/libavcodec/vulkan_av1.c : In function ‘vk_av1_create_params’ :
  
  src/libavcodec/vulkan_av1.c:183:43 : error : initialization of ‘long long unsigned int’ from ‘void *’ makes integer from pointer without a cast [-Wint-conversion]
  
    183 |         .videoSessionParametersTemplate = NULL,
  
        |                                           ^ 
  
  src/libavcodec/vulkan_av1.c:183:43 : note : (near initialization for ‘(anonymous).videoSessionParametersTemplate’)
  
  ```
  Use Vulkan's VK_NULL_HANDLE instead of bare NULL.
  Fix Trac ticket #10724.
  Was reported downstream in Gentoo at https://bugs.gentoo.org/919067.
  Signed-off-by : Sam James <sam@gentoo.org>
  

  • [DH] libavcodec/vulkan_av1.c
  • [DH] libavcodec/vulkan_decode.c
  • [DH] libavcodec/vulkan_h264.c
  • [DH] libavcodec/vulkan_hevc.c
  • [DH] libavcodec/vulkan_video.c