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  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

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Sur d’autres sites (16001)

  • how to make ffmpeg transcoding from mjpeg to h264 in real time ?

    3 août 2020, par SolskGaer

    I have a mjpeg stream which output picture 10FPS(cellphone screenshot), and I use the following command to trancode it to a h264 stream and play it on my laptop

    


    ffmpeg -f mjpeg -r 20 -y -i http://127.0.0.1:53293/  -vcodec libx264 -preset veryfast -profile:v baseline -b:v 1024k -r 10 -f h264 pipe:1 | ffplay -i pipe:0


    


    but the output stream is a few seconds behind the cellphone screen. Here is the output of ffmpeg

    


    ffplay version 4.3.1 Copyright (c) 2003-2020 the FFmpeg developers
  built with Apple clang version 11.0.3 (clang-1103.0.32.62)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 11.0.3 (clang-1103.0.32.62)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, mjpeg, from 'http://127.0.0.1:53293/':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 750x1334 [SAR 144:144 DAR 375:667], 20 tbr, 1200k tbn, 20 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x7f8f2900da00] using SAR=1/1
[libx264 @ 0x7f8f2900da00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7f8f2900da00] profile Constrained Baseline, level 3.2, 4:2:0, 8-bit
Output #0, h264, to 'pipe:1':
  Metadata:
    encoder         : Lavf58.45.100
    Stream #0:0: Video: h264 (libx264), yuvj420p(pc), 750x1334 [SAR 144:144 DAR 375:667], q=-1--1, 1024 kb/s, 10 fps, 10 tbn, 10 tbc
    Metadata:
      encoder         : Lavc58.91.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/1024000 buffer size: 0 vbv_delay: N/A
frame=   30 fps=5.2 q=29.0 size=      97kB time=00:00:00.10 bitrate=7911.0kbits/s dup=0 drop=26 speed=0.0172
frame=   33 fps=5.2 q=41.0 size=     190kB time=00:00:00.40 bitrate=3888.2kbits/s dup=0 drop=29 speed=0.0633
frame=   35 fps=5.1 q=40.0 size=     253kB time=00:00:00.60 bitrate=3457.8kbits/s dup=0 drop=31 speed=0.0874
frame=   38 fps=5.1 q=40.0 size=     330kB time=00:00:00.90 bitrate=3006.1kbits/s dup=0 drop=34 speed=0.122x
frame=   40 fps=5.1 q=40.0 size=     381kB time=00:00:01.10 bitrate=2838.3kbits/s dup=0 drop=36 speed=0.139x
frame=   43 fps=5.1 q=39.0 size=     460kB time=00:00:01.40 bitrate=2691.3kbits/s dup=0 drop=39 speed=0.166x
frame=   45 fps=5.0 q=39.0 size=     505kB time=00:00:01.60 bitrate=2585.9kbits/s dup=0 drop=41 speed=0.178x
frame=   48 fps=5.0 q=38.0 size=     552kB time=00:00:01.90 bitrate=2381.0kbits/s dup=0 drop=44 speed= 0.2x 
frame=   50 fps=5.0 q=33.0 size=     562kB time=00:00:02.10 bitrate=2190.7kbits/s dup=0 drop=46 speed=0.209x
frame=   53 fps=5.0 q=37.0 size=     572kB time=00:00:02.40 bitrate=1951.2kbits/s dup=0 drop=49 speed=0.227x
frame=   55 fps=5.0 q=37.0 size=     581kB time=00:00:02.60 bitrate=1830.0kbits/s dup=0 drop=51 speed=0.234x
frame=   58 fps=5.0 q=36.0 size=     591kB time=00:00:02.90 bitrate=1670.8kbits/s dup=0 drop=54 speed=0.25x 
frame=   60 fps=4.9 q=35.0 size=     598kB time=00:00:03.10 bitrate=1580.2kbits/s dup=0 drop=56 speed=0.255x
frame=   63 fps=5.0 q=35.0 size=     608kB time=00:00:03.40 bitrate=1465.2kbits/s dup=0 drop=59 speed=0.268x
frame=   65 fps=4.9 q=34.0 size=     613kB time=00:00:03.60 bitrate=1395.7kbits/s dup=0 drop=61 speed=0.273x
frame=   68 fps=5.0 q=34.0 size=     659kB time=00:00:03.90 bitrate=1384.5kbits/s dup=0 drop=64 speed=0.284x
frame=   70 fps=4.9 q=34.0 size=     682kB time=00:00:04.10 bitrate=1363.2kbits/s dup=0 drop=66 speed=0.288x
frame=   73 fps=4.9 q=35.0 size=     720kB time=00:00:04.40 bitrate=1340.1kbits/s dup=0 drop=69 speed=0.298x
frame=   75 fps=4.9 q=35.0 size=     746kB time=00:00:04.60 bitrate=1329.1kbits/s dup=0 drop=71 speed=0.301x
frame=   78 fps=4.9 q=36.0 size=     786kB time=00:00:04.90 bitrate=1314.6kbits/s dup=0 drop=74 speed=0.31x 
frame=   80 fps=4.9 q=36.0 size=     811kB time=00:00:05.10 bitrate=1303.3kbits/s dup=0 drop=76 speed=0.312x


    


    I don't think the CPU of my laptop is the bottleneck of this process, here is the spec of my laptop

    


    
      Model Name: MacBook Pro
      Model Identifier: MacBookPro16,1
      Processor Name: 6-Core Intel Core i7
      Processor Speed: 2.6 GHz
      Number of Processors: 1
      Total Number of Cores: 6
      L2 Cache (per Core): 256 KB
      L3 Cache: 12 MB
      Hyper-Threading Technology: Enabled
      Memory: 16 GB


    


    but I can't track the reason why this happened. What can I make the output stream be real time ? Any suggestion would be appreciated.

    


  • Adding video with paperclip av-transcoder

    16 avril 2016, par D.Graves

    Okay so I tried this awhile back and I couldn’t get it to work. So I started new and still struggling with this. I am able to upload images no problem. But for some reason I am getting errors when I try to upload videos. I have ffmpeg installed and the latest paperclip av-transcoder installed as well.

    This is the error that I’m getting
    enter image description here

    This is my post model

    class Post < ActiveRecord::Base
    
 belongs_to :user
    
 has_attached_file :video, styles: {
    
    :medium => {
    
      :geometry => "640x480",
    
      :format => 'mp4'
    
    },
    
    :thumb => { :geometry => "160x120", :format => 'jpeg', :time => 10}
    
}, :processors => [:transcoder]
    
 validates_attachment_content_type :video, content_type: /\Avideo\/.*\Z/
    
end

    This is my post controller

    def index
    
@posts = Post.all.order("created_at DESC")
    
end
    

    
def show
    
end
    

    
def new
    
@post = current_user.posts.build
    
end
    

    
def edit
    
end
    

    
def create
    
@post = current_user.posts.build(post_params)
    
if @post.save
    
  redirect_to @post, notice: 'Post was successfully created.'
    
else
    
  render :new
    
end
    
end
    

    
def update
    
if @post.update(post_params)
    
  redirect_to @post, notice: 'Post was successfully updated.'
    
else
    
  render :edit
    
end
    
end
    

    
def destroy
    
@post.destroy
    
redirect_to posts_url
    
end
    

    
private
    
# Use callbacks to share common setup or constraints between actions.
    
def set_post
    
  @post = Post.find_by(id: params[:id])
    
end
    

    
def correct_user
    
  @post = current_user.posts.find_by(id: params[:id])
    
  redirect_to posts_path, notice: "Not authorized to edit this post" if     @post.nil?
    
end
    

    
# Never trust parameters from the scary internet, only allow the white list through.
    
def post_params
    
  params.require(:post).permit(:description, :image, :video)
    
end
    

    
def bscenes_params
    
    params.require(:post).permit(:video)
    
end
    
end

    This is the tag I am using on my show page

    <%= video_tag bscene.video.url(:medium), controls: true, style: "max-width: 100%;" %>

    I followed step by step the steps on this site
    http://alloffices.io/posts/heroku-s3-paperclip-av-transcoder-for-video-uploads

    Don’t know why Im getting the NamError. Any help at all would be a ton of help

    When I take away the "bscene" from the tag and controller I then get this when I upload.

    enter image description here

  • FFMpeg and WebM/VP8

    25 novembre 2011, par Anand Suresh

    I am trying to use ffmpeg and ffserver to stream VP8 video.

    I am using the following command to start FFMpeg :

    ffmpeg -v 9 -loglevel 99 -f x11grab -s 1440x900 -r2 -i :0.0 -f webm http://localhost:8090/feed1.ffm

    The above command abruptly terminates generating the following error :

    > FFmpeg version 0.6.2-4:0.6.2-1ubuntu1.1, Copyright (c) 2000-2010 the Libav developers
    
  built on Sep 16 2011 16:57:46 with gcc 4.5.2
    
  configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
    
  WARNING: library configuration mismatch
    
  libavutil   configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavcodec  configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavformat configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavdevice configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavfilter configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libswscale  configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libpostproc configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavutil     50.15. 1 / 50.15. 1
    
  libavcodec    52.72. 2 / 52.72. 2
    
  libavformat   52.64. 2 / 52.64. 2
    
  libavdevice   52. 2. 0 / 52. 2. 0
    
  libavfilter    1.19. 0 /  1.19. 0
    
  libswscale     0.11. 0 /  0.11. 0
    
  libpostproc   51. 2. 0 / 51. 2. 0
    
[x11grab @ 0x9869420]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 1440 height: 900
    
[x11grab @ 0x9869420]shared memory extension  found
    
[x11grab @ 0x9869420]Probe buffer size limit 5000000 reached
    
[x11grab @ 0x9869420]Estimating duration from bitrate, this may be inaccurate
    
Input #0, x11grab, from ':0.0':
    
  Duration: N/A, start: 1322253753.374957, bitrate: 41472 kb/s
    
    Stream #0.0, 1, 1/1000000: Video: rawvideo, bgra, 1440x900, 1/1, 41472 kb/s, 1 tbr, 1000k tbn, 1 tbc
    
[libvpx @ 0x9876540]v0.9.6
    
[libvpx @ 0x9876540]--enable-pic --enable-shared --disable-install-bins --disable-install-srcs --target=x86-linux-gcc
    
[libvpx @ 0x9876540]vpx_codec_enc_cfg
    
[libvpx @ 0x9876540]generic settings
    
  g_usage:                      0
    
  g_threads:                    0
    
  g_profile:                    0
    
  g_w:                          320
    
  g_h:                          240
    
  g_timebase:                   {1/30}
    
  g_error_resilient:            0
    
  g_pass:                       0
    
  g_lag_in_frames:              0
    
[libvpx @ 0x9876540]rate control settings
    
  rc_dropframe_thresh:          0
    
  rc_resize_allowed:            0
    
  rc_resize_up_thresh:          60
    
  rc_resize_down_thresh:        30
    
  rc_end_usage:                 0
    
  rc_twopass_stats_in:          (nil)(0)
    
  rc_target_bitrate:            256
    
[libvpx @ 0x9876540]quantizer settings
    
  rc_min_quantizer:             4
    
  rc_max_quantizer:             63
    
[libvpx @ 0x9876540]bitrate tolerance
    
  rc_undershoot_pct:            95
    
  rc_overshoot_pct:             200
    
[libvpx @ 0x9876540]decoder buffer model
    
  rc_buf_sz:                    6000
    
  rc_buf_initial_sz:            4000
    
  rc_buf_optimal_sz:            5000
    
[libvpx @ 0x9876540]2 pass rate control settings
    
  rc_2pass_vbr_bias_pct:        50
    
  rc_2pass_vbr_minsection_pct:  0
    
  rc_2pass_vbr_maxsection_pct:  400
    
[libvpx @ 0x9876540]keyframing settings
    
  kf_mode:                      1
    
  kf_min_dist:                  0
    
  kf_max_dist:                  9999
    
[libvpx @ 0x9876540]
    
[libvpx @ 0x9876540]vpx_codec_enc_cfg
    
[libvpx @ 0x9876540]generic settings
    
  g_usage:                      0
    
  g_threads:                    1
    
  g_profile:                    0
    
  g_w:                          1440
    
  g_h:                          900
    
  g_timebase:                   {1/1}
    
  g_error_resilient:            0
    
  g_pass:                       0
    
  g_lag_in_frames:              0
    
[libvpx @ 0x9876540]rate control settings
    
  rc_dropframe_thresh:          0
    
  rc_resize_allowed:            0
    
  rc_resize_up_thresh:          60
    
  rc_resize_down_thresh:        30
    
  rc_end_usage:                 0
    
  rc_twopass_stats_in:          (nil)(0)
    
  rc_target_bitrate:            200
    
[libvpx @ 0x9876540]quantizer settings
    
  rc_min_quantizer:             1
    
  rc_max_quantizer:             38
    
[libvpx @ 0x9876540]bitrate tolerance
    
  rc_undershoot_pct:            95
    
  rc_overshoot_pct:             200
    
[libvpx @ 0x9876540]decoder buffer model
    
  rc_buf_sz:                    6000
    
  rc_buf_initial_sz:            4000
    
  rc_buf_optimal_sz:            5000
    
[libvpx @ 0x9876540]2 pass rate control settings
    
  rc_2pass_vbr_bias_pct:        50
    
  rc_2pass_vbr_minsection_pct:  0
    
  rc_2pass_vbr_maxsection_pct:  400
    
[libvpx @ 0x9876540]keyframing settings
    
  kf_mode:                      1
    
  kf_min_dist:                  0
    
  kf_max_dist:                  12
    
[libvpx @ 0x9876540]
    
[libvpx @ 0x9876540]vpx_codec_control
    
[libvpx @ 0x9876540]  VP8E_SET_CPUUSED:             3
    
[libvpx @ 0x9876540]  VP8E_SET_NOISE_SENSITIVITY:   0
    
Output #0, webm, to 'http://127.0.0.1:8090/feed1.ffm':
    
  Metadata:
    
    encoder         : Lavf52.64.2
    
    Stream #0.0, 0, 1/1000: Video: libvpx, yuv420p, 1440x900, 1/1, q=2-31, 200 kb/s, 1k tbn, 1 tbc
    
Stream mapping:
    
  Stream #0.0 -> #0.0
    
Press [q] to stop encoding
    
[webm @ 0x98753b0]Writing block at offset 15, size 158658, pts 0, dts 0, duration 1000, flags 128
    
[webm @ 0x98753b0]Starting new cluster at offset 158681 bytes, pts 0

    Can anyone point out what I am doing wrong here ? Why does ffmpeg die everytime it starts a new cluster ?

    Thanks

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