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• 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


 


  


• How to do text alignment on box in ffmpeg ?

  28 juin 2022, par Dinesh Reddy

  Drawbox with drawtext

  


  ffmpeg -y -i skate.mp4 -filter_complex "drawbox=x=645.7538994800693:y=449.2201039861352:w=700:h=169:color=red@1:t=fill,drawtext=enable='between(t,0,3)':fontfile='344c235b-9bf7-4b13-ad99-ab230b473577.ttf':text='Hello world':fontsize=150:line_spacing=3:x=645.7538994800693:y=449.2201039861352:fontcolor=#000000:borderw=0:bordercolor=#ffffff,rotate=a=0*PI/180:ow=rotw(0*PI/180):oh=roth(0*PI/180):c=black@0"  output.mp4

  


  I draw the box using drawbox filter and written the text also but i need to do text alignment in the box like center, right and left. Can you help in this anyone.

  


  Thanks in advance

  


• Evolution #4470 : Commodité pour les modèles

  8 avril 2020, par nicod _

  b b a écrit :

  Leur syntaxe a été étendue, et il est possible de spécifier, outre l’alignement (, ou ), une classe plus générique, qui soit correspond à un squelette précis, s’il existe, soit à une classe CSS ( ira chercher le modele modeles/img_classe.html, si ce fichier existe, sinon utilisera le modèle modeles/img.html, mais avec un paramètre class="classe").

  Me coucherais moins bête, merci b_b :)