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• how to stream an IP webcam (h264) to youtube live rtmp using avconv or ffmpeg ?

  20 juin 2015, par Baba

  I have an IP webcam HiSilicon Hi3516C that I can successfully access from a raspberry pi. I can get still images by using a command like this :

  avconv -i "rtsp://192.168.1.10:554" myfile.jpg

  now instead of still images I would like to stream the video to youtube live. I have configured an event in my youtube live account and gotten a stream name and a rtmp url.

  My youtube ingestion settings are :
  custom ingestion : bitrate 400kbps - 1000 kbps (360p)
  encoder : Other encoder

  my webcam specs says :
  Webcam : HiSilicon Hi3516C
  Video Encoding
   H.264 baseline profile
   H.264 main profile Level 4.0
   MJPEG/JPEG baseline
  Video Encoding Performance
   At most 2-megapixel resolution for H.264 encoding
   Real-time H.264&JPEG encoding of multiple types of
  streams : 1080p@30 fps+VGA@30 fps + JPEG snapshot
  1080p@1 fps
   Supports constant bit rate (CBR) mode and variable bit
  rate (VBR) mode.
   Supports the output bit rate ranging from 32 Kbit/s to 40
  Mbit/s.
   Encoding frame rate, ranging from 1/16 frame/s to 30
  frame/s
   Eight ROIs
   OSD overlay of eight regions before encoding

  I am not sure what command line to issue in order to properly encode and send my stream to my you tube event. So far I have tried :

  avconv  -i rtsp://192.168.1.10:554 -r 20 -b 750 -f flv rtmp://a.rtmp.youtube.com/live2

  (note that I haven’t used the stream name provided by youtube since I do not know where to specify it) this returns the following :

  [h264 @ 0x1fb0380] RTP : missed 273 packets
  [h264 @ 0x1fb0380] RTP : missed 191 packets
  [h264 @ 0x1fb0380] RTP : missed 225 packets
  [h264 @ 0x1fb0380] RTP : missed 332 packets
  [h264 @ 0x1fb0380] RTP : missed 349 packets
  [h264 @ 0x1fb0380] RTP : missed 339 packets
  [rtsp @ 0x1fac640] max_analyze_duration reached
  [rtsp @ 0x1fac640] Estimating duration from bitrate, this may be inaccurate
  Guessed Channel Layout for Input Stream #0.1 : mono
  Input #0, rtsp, from ’rtsp ://192.168.1.10:554’ :
  Metadata :
  title :
  comment : minisdp
  Duration : N/A, start : 0.040000, bitrate : N/A
  Stream #0.0 : Video : h264 (Main), yuv420p, 1920x1080, 2.23 fps, 90k tbn
  Stream #0.1 : Audio : [0][0][0][0] / 0x0000, 8000 Hz, mono
  RTMP_ReadPacket, failed to read RTMP packet header
  rtmp ://a.rtmp.youtube.com/live2 : Unknown error occurred

  I have also tried

   avconv -f h264  -i rtsp://192.168.1.10:554 -r 20 -b 750 -f flv rtmp://a.rtmp.youtube.com/live2

  which gives : rtsp ://192.168.1.10:554 : Protocol not found

  and

  avconv -rtsp_transport tcp   -i rtsp://192.168.1.10:554 -r 20 -b 750 -f flv rtmp://a.rtmp.youtube.com/live2p

  which gives :
  [rtsp @ 0xf8680] max_analyze_duration reached
  [rtsp @ 0xf8680] Estimating duration from bitrate, this may be inaccurate
  Guessed Channel Layout for Input Stream #0.1 : mono
  Input #0, rtsp, from ’rtsp ://192.168.1.10:554’ :
  Metadata :
  title :
  comment : minisdp
  Duration : N/A, start : 0.040000, bitrate : N/A
  Stream #0.0 : Video : h264 (Main), yuv420p, 1920x1080, 25 fps, 1k tbr, 90k tbn
  Stream #0.1 : Audio : [0][0][0][0] / 0x0000, 8000 Hz, mono
  RTMP_ReadPacket, failed to read RTMP packet header
  rtmp ://a.rtmp.youtube.com/live2p : Unknown error occurred

  Any hint, suggestions ?
  I know very little about, video formats, codecs and streaming in general so any help is welcome. I would not mind using ffmpeg instead if anyone knows what command to issue.

• Vulkan Validation Error from FFMPEG creating an image : VUID-VkImageCreateInfo-pNext-06811

  11 mars 2024, par cecil

  I have an AMD Radeon RX 7800 XT and am using the MESA video driver on Arch Linux.

  


  I've been struggling to work out the code to decode an H265 video with FFMPEG (using Vulkan Video) and get the decoded image into a texture I can render using Vulkan.

  


  At the point that I call avcodec_send_packet() the following debug information is output :

  


  [hevc @ 0x5190001a1380] Decoding VPS
[hevc @ 0x5190001a1380] Main profile bitstream
[hevc @ 0x5190001a1380] Decoding SPS
[hevc @ 0x5190001a1380] Main profile bitstream
[hevc @ 0x5190001a1380] Decoding VUI
[hevc @ 0x5190001a1380] Decoding PPS
[hevc @ 0x5190001a1380] Format vulkan chosen by get_format().
[hevc @ 0x5190001a1380] Format vulkan requires hwaccel initialisation.
[hevc @ 0x5190001a1380] Decoder capabilities for hevc profile "Main":
[hevc @ 0x5190001a1380]     Maximum level: 51 (stream 183)
[hevc @ 0x5190001a1380]     Width: from 16 to 8192
[hevc @ 0x5190001a1380]     Height: from 16 to 4352
[hevc @ 0x5190001a1380]     Width alignment: 16
[hevc @ 0x5190001a1380]     Height alignment: 16
[hevc @ 0x5190001a1380]     Bitstream offset alignment: 128
[hevc @ 0x5190001a1380]     Bitstream size alignment: 128
[hevc @ 0x5190001a1380]     Maximum references: 17
[hevc @ 0x5190001a1380]     Maximum active references: 8
[hevc @ 0x5190001a1380]     Codec header name: 'VK_STD_vulkan_video_codec_h265_decode' (driver), 'VK_STD_vulkan_video_codec_h265_decode' (compiled)
[hevc @ 0x5190001a1380]     Codec header version: 1.0.0 (driver), 1.0.0 (compiled)
[hevc @ 0x5190001a1380]     Decode modes: dedicated_dpb
[hevc @ 0x5190001a1380]     Capability flags: separate_references
[hevc @ 0x5190001a1380] Choosing best pixel format for decoding from 1:
[hevc @ 0x5190001a1380]     nv12* (Vulkan ID: 1000156003)
[hevc @ 0x5190001a1380] Chosen frame pixfmt: nv12 (Vulkan ID: 1000156003)
[ERROR] Validation Error: [ VUID-VkImageCreateInfo-pNext-06811 ] | MessageID = 0x30f4ac70 | vkCreateImage(): pCreateInfo specifies flags (VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT|VK_IMAGE_CREATE_EXTENDED_USAGE_BIT|VK_IMAGE_CREATE_ALIAS_BIT), format (VK_FORMAT_G8_B8R8_2PLANE_420_UNORM), imageType (VK_IMAGE_TYPE_2D), and tiling (VK_IMAGE_TILING_OPTIMAL) which are not supported by any of the supported video format properties for the video profiles specified in the VkVideoProfileListInfoKHR structure included in the pCreateInfo->pNext chain, as reported by vkGetPhysicalDeviceVideoFormatPropertiesKHR for the same video profiles and the image usage flags specified in pCreateInfo->usage (VK_IMAGE_USAGE_TRANSFER_SRC_BIT|VK_IMAGE_USAGE_SAMPLED_BIT|VK_IMAGE_USAGE_VIDEO_DECODE_DST_BIT_KHR). The Vulkan spec states: If the pNext chain includes a VkVideoProfileListInfoKHR structure with profileCount greater than 0, then supportedVideoFormat must be VK_TRUE (https://www.khronos.org/registry/vulkan/specs/1.3-extensions/html/vkspec.html#VUID-VkImageCreateInfo-pNext-06811)
[hevc @ 0x5190001a1380] Allocating 131072 bytes in bind index 0 for video session
[hevc @ 0x5190001a1380] Allocating 43614208 bytes in bind index 1 for video session
[hevc @ 0x5190001a1380] Vulkan decoder initialization sucessful


  


  I'm concerned about the validation error regarding an image creation. If I allow the program to continue decoding frames, this validation error appears a total of 6 times, but then stops as subsequent frames are decoded without any more validation errors.

  


  I'm unsure if this is a problem or not. FFMPEG reports "Vulkan decoder initialization sucessful" despite the validation error.

  


  I am unsure exactly what to do after calling avcodec_receive_frame() to get the decoded frame but did not want to try and proceed if there is a problem already with the images FFMPEG is creating.

  


• Video tube site on wordpress dedicated server mp4 only streams on android firefox

  9 mai 2015, par Steven Minix

  I have a video tube site that is quite popular and I am having an issue with my mp4 files streaming on android devices. When using Mozilla Firefox on android my videos play and seek perfectly. When using google chrome or default Android browser they do not play at all. I ran one of my videos through mp4box with a few settings and I got it to play on those browser in Android but they break when trying to seek. So at this stage the videos still play fine on Firefox in Android but now even though the video will start playing rather quickly on the other two browsers the videos will not seek properly as seeking will cause the video to break and restart itself. I am in a wordpress installation on a dedicated server.

  server specs:
  
  PHP 5.2.4 or greater
  
  MySQL 5.0 or greater
  
  PHP cURL extension
  
  PHP Zlib extension
  
  Unix-like OS (Windows is not supported)
  
  PHP 5.3, 5.4, 5.5 yes
  
  IonCube Loader 4.6.1 or above yes
  
  Mysql 5.0 or above and its support in PHP yes
  
  FFmpeg 1.0 or above with libx264, libavfilter and AAC codec (libfaac, libfdk_aac or native ffmpeg aac codec) yes
  
  cURL and its support in PHP yes
  
  Apache + mod_rewrite + (MultiViews option disabled) yes, not sure about multi views, please ask how this is done.
  
  Zlib library yes
  
  XML extension yes
  
  GD2 with true type font (required!) yes
  
  Ability to exec PHP from CLI using exec() command yes
  
  PHP register_globals off yes
  
  PHP magic_quotes_gpc off yes
  
  PHP safe_mode off yes
  
  PHP file_uploads on yes
  
  PHP allow_url_fopen on yes

  The files are MP4 with the meta data at the front of the file and playing in the standard wordpress video player(or any html5 based player as I have tried quite a few and all have the same result)

  I had to ask my server admin to install ffmpeg for my streaming is it possible they did not add the right commands ?

  I have no idea what my videos are doing on Apple devices but I assume it is okay since Google Analytics shows a low bounce rate from that devices.

  If any issue is on service side I want to contact them armed with facts. I appreciate your help in this matter.

  EDIT : FFMPEG SERVER CONFIGURATION :
  root@dwhsv160 [ /ffmpeginstaller.8.0]# ffmpeg -version
  ffmpeg version N-71403-g415f1fa-syslint Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-11)
  configuration : —prefix=/usr/local/cpffmpeg —enable-shared —enable-nonfree —enable-gpl —enable-pthreads —enable-libopencore-amrnb —enable-decoder=liba52 —enable-libopencore-amrwb —enable-libfaac —enable-libmp3lame —enable-libtheora —enable-libvorbis —enable-libx264 —enable-libxvid —extra-cflags=-I/usr/local/cpffmpeg/include/ —extra-ldflags=-L/usr/local/cpffmpeg/lib —enable-version3 —extra-version=syslint
  libavutil 54. 22.101 / 54. 22.101
  libavcodec 56. 34.100 / 56. 34.100
  libavformat 56. 30.100 / 56. 30.100
  libavdevice 56. 4.100 / 56. 4.100
  libavfilter 5. 13.101 / 5. 13.101
  libswscale 3. 1.101 / 3. 1.101
  libswresample 1. 1.100 / 1. 1.100
  libpostproc 53. 3.100 / 53. 3.100

  The few things I tried with the mp4 that got them to play but still not seek properly were running them through mp4box with no special settings and simply remuxing them. I also tried a couple special settings like adding a hint track and other things none resulted in the file streaming properly in chrome or default android browser. AGAIN my files stream fine on all desktops and in FIREFOX on android but DO NOT work in chrome on android or default android browser.