Recherche avancée

Sur d’autres sites (7765)

• How do I use FFMPEG to live stream a video to Vimeo ?

  9 janvier 2021, par Kwixster

  I'm attempting to live stream to Vimeo a pre-recorded video using a FFMPEG CmdLine. The following CmdLine works just fine if the video is 1280 x 720 but if the video is 1920 x 1080 it is jerky and unwatchable. I have the Vimeo account that allows live streaming. I know very little about FFMPEG ; the line I'm using is copied from another forum and modified (path to video file, URL, key) for my purposes. I know that my PC and internet speed (24 mbps upload) is more than capable of handling this. It works fine if a stream from Wirecast.

  


  My ultimate goal is to write a program that streams videos to Vimeo and onto my website at a scheduled time without me having to be present to push a button. That part I've got handled. Its the FFMPEG part that I'm having trouble with.

  


  Here's the CmdLine and the FFMPEG report :

  


  **C:\Users\kirby>ffmpeg -re -nostdin -i "D:\Dropbox\ACJ\ACJ Videos\Kirchen-Ox Blood_1080.mp4" -vcodec libx264 -preset:v ultrafast -acodec aac -f flv rtmp://rtmp-global.cloud.vimeo.com/live/149679ba-d76c-4bdf-895a-84fddccxxxxx**

ffmpeg version N-100554-g89c9c42c5b Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 9.3-win32 (GCC) 20200320
  configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --enable-shared --disable-static --disable-debug --disable-w32threads --enable-pthreads --enable-iconv --enable-zlib --enable-libxml2 --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-opencl --enable-libvmaf --enable-vulkan --enable-libvorbis --enable-amf --enable-libaom --enable-avisynth --enable-libdav1d --enable-libdavs2 --enable-ffnvcodec --enable-cuda-llvm --enable-libglslang --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvpx --enable-libwebp --enable-libmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-libs=-lgomp
  libavutil      56. 63.100 / 56. 63.100
  libavcodec     58.115.102 / 58.115.102
  libavformat    58. 65.101 / 58. 65.101
  libavdevice    58. 11.103 / 58. 11.103
  libavfilter     7. 95.100 /  7. 95.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\Dropbox\ACJ\ACJ Videos\Kirchen-Ox Blood_1080.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41
    creation_time   : 2021-01-09T17:24:45.000000Z
  Duration: 00:05:20.70, start: 0.000000, bitrate: 10135 kb/s
    Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 9815 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
    Metadata:
      creation_time   : 2021-01-09T17:24:45.000000Z
      handler_name    : ?Mainconcept Video Media Handler
      vendor_id       : [0][0][0][0]
      encoder         : AVC Coding
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default)
    Metadata:
      creation_time   : 2021-01-09T17:24:45.000000Z
      handler_name    : #Mainconcept MP4 Sound Media Handler
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
[libx264 @ 0000024360133040] using SAR=1/1
[libx264 @ 0000024360133040] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000024360133040] profile Constrained Baseline, level 4.0, 4:2:0, 8-bit
[libx264 @ 0000024360133040] 264 - core 161 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
Output #0, flv, to 'rtmp://rtmp-global.cloud.vimeo.com/live/149679ba-d76c-4bdf-895a-84fddccxxxxx':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41
    encoder         : Lavf58.65.101
    Stream #0:0(eng): Video: h264 ([7][0][0][0] / 0x0007), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 29.97 fps, 1k tbn (default)
    Metadata:
      creation_time   : 2021-01-09T17:24:45.000000Z
      handler_name    : ?Mainconcept Video Media Handler
      vendor_id       : [0][0][0][0]
      encoder         : Lavc58.115.102 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
    Stream #0:1(eng): Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2021-01-09T17:24:45.000000Z
      handler_name    : #Mainconcept MP4 Sound Media Handler
      vendor_id       : [0][0][0][0]
      encoder         : Lavc58.115.102 aac
frame=  531 fps= 21 q=23.0 size=   22503kB time=00:00:17.62 bitrate=10461.5kbits/s speed=0.686x


 


  


• Create and insert new FFMPEG packet to live stream

  25 septembre 2019, par TUrwin

  I’m currently receiving an FFMPEG encoded livestream and saving it directly to a .ts file.

  The data has 2 encoded streams : One for video, and one for KLV metadata.

  I have another dataset streaming in which is raw KLV data.

  What I want to achieve is to encode the raw KLV packet data into FFMPEG packets and mux them into the same .ts file as the other data streams without having to decode and re-encode the existing FFMPEG packets.

  Is there a way to achieve this ?

• Queuing multiple video files as a single live video stream with nodejs and ffmpeg

  24 avril 2016, par bomtempi

  i would like to stream a video with node nodejs using multiple little video sequences that are created on the fly.
  It means that the server queues multiple files, but the client must see it as only one single stream.

  Why would i need such feature ?

  I have an application that creates images on the fly on the server, and i need to send them as a single video to the client, as if it was on a live source.
  I cannot use ffmpeg to concatenate these files and convert them to a single video because i don’t have the complete sequence.

  I can do the trick with images sequences, using "multipart/x-mixed-replace" content-type, in a mjpeg format. Here is how i do :

  http.createServer(function(req, stream) {
  
    stream.writeHead(200, {
  
      'Content-Type': 'multipart/x-mixed-replace;boundary=myboundary',
  
      'Cache-Control': 'no-cache',
  
      'Expires': '-1',
  
      'Connection': 'close',
  
      'Pragma': 'no-cache'
  
    });
  
  
  
    setInterval(function() {
  
  
  
      var data = ... // here launch the function to get the binary data from the latest image created on the server
  
  
  
      stream.write("--myboundary\r\n");
  
      stream.write("Content-Type: image/jpeg\r\n");
  
      stream.write("Content-Length: " + data.length + "\r\n");
  
      stream.write("\r\n");
  
      stream.write(data);
  
      stream.write("\r\n");
  
    }, 300);
  
  
  
  }).listen(port, function() {
  
  
  
  });

  The problem with this format is that it has no sound.
  I tried to serve the sound from a different endpoint, and use ffmpeg to assemble them in live and send them back to the server where it will be forwarded to a new endpoint containing the sound and video, but after just a few seconds the video becomes more and more laggy and freezes.

  So that is why i thought that i should start by generating small videos on the server, by taking the 24 or 30 latest images created on the fly, concatenate them with ffmpeg and queue them on nodejs. That would just add approximately 1 second delay to the client.

  Thanks for your help !