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  • Crossdevice encoding static file to stream in browser using FFMPEG (segmented h264 ?)

    20 mars 2014, par Vprnl

    I'm building a mediacenter application in NodeJS which is going pretty ok.
    (you can check it out on Github : https://github.com/jansmolders86/mediacenterjs )

    I'm using FFMPEG to transcode local (static) movies to a stream which I then send to the browser.

    At first I used h264 with Flash which worked in browsers, but I really need it to work on Android an iOS (so no Flash) and preferably working on a Raspberry Pi.

    But getting it to play on all devices is driving me absolutely insane !

    I have all these bits of the puzzle I've gathered from countless hours reading articles, tutorials and stack overflow posts, which led me to the conclusion that I need to produce the following :

    • Use video codec H264 to transcode to MP4
    • Move the moovatom '-movflags' to make a MP4 streamable
    • Segment the stream so Apple can play the stream as well.

    But getting nowhere with this. Every time I produce a series of FFMPEG settings that either don't work, or work on some devices rather than all.

    Some of my failed attempt where :

    My flash attempt -> Main problem (not running in IOS) :

        '-y','-ss 0','-b 800k','-vcodec libx264','-acodec mp3'\ 
    
    '-ab 128','-ar 44100','-bufsize 62000', '-maxrate 620k'\
    
    metaDuration,tDuration,'-f flv

    my HLS attempt -> Main problem (not running in browser) :

            '-r 15','-b:v 128k','-c:v libx264','-x264opts level=41'\
    
        '-threads 4','-s 640x480','-map 0:v','-map 0:a:0','-c:a mp3'\
    
        '-b:a 160000','-ac 2','-f hls','-hls_time 10','-hls_list_size 6'\
    
        '-hls_wrap 18','-start_number 1'

    My MP4 attempt -> Main problem (duration is shortened and the later part of the video is speeding by)

           '-y','-ss 0','-b 800k','-vcodec libx264','-acodec mp3'\
    
       '-ab 128','-ar 44100','-bufsize 62000', '-maxrate 620k'\
    
       metaDuration,tDuration,'-f mp4','-movflags','frag_keyframe+empty_moov'

    Second MP4 attempt : -> Main problem (duration is shortened and the later part of the video is speeding by)

        '-y','-vcodec libx264','-pix_fmt yuv420p','-b 1200k','-flags +loop+mv4'\
    
    '-cmp 256','-partitions +parti4x4+parti8x8+partp4x4+partp8x8+partb8x8'\
    
    '-me_method hex','-subq 7','-trellis 1','-refs 5','-bf 3','-coder 1'\
    
    '-me_range 16','-g 150','-keyint_min 25','-sc_threshold 40'\
    
    '-i_qfactor 0.71','-acodec mp3','-qmin 10','-qdiff 4','-qmax 51'\
    
    '-ab 128k','-ar 44100','-threads 2','-f mp4','-movflags','frag_keyframe+empty_moov'])

    Here is an example of the FFMPEG log running with these settings :

            file conversion error ffmpeg version N-52458-gaa96439 Copyright (c) 2000-2013 the FFmpeg developers
    
          built on Apr 24 2013 22:19:32 with gcc 4.8.0 (GCC)
    
          configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --e
    
        nable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable
    
        -libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --ena
    
        ble-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwola
    
        me --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enabl
    
        e-libxvid --enable-zlib
    
          libavutil      52. 27.101 / 52. 27.101
    
          libavcodec     55.  6.100 / 55.  6.100
    
          libavformat    55.  3.100 / 55.  3.100
    
          libavdevice    55.  0.100 / 55.  0.100
    
          libavfilter     3. 60.101 /  3. 60.101
    
          libswscale      2.  2.100 /  2.  2.100
    
          libswresample   0. 17.102 /  0. 17.102
    
          libpostproc    52.  3.100 / 52.  3.100
    
        [avi @ 02427900] non-interleaved AVI
    
        Guessed Channel Layout for  Input Stream #0.1 : mono
    
        Input #0, avi, from 'C:/temp/the avengers.avi':
    
          Duration: 00:00:34.00, start: 0.000000, bitrate: 1433 kb/s
    
            Stream #0:0: Video: cinepak (cvid / 0x64697663), rgb24, 320x240, 15 tbr, 15 tbn, 15 tbc
    
            Stream #0:1: Audio: pcm_u8 ([1][0][0][0] / 0x0001), 22050 Hz, mono, u8, 176 kb/s
    
        Please use -b:a or -b:v, -b is ambiguous
    
        [libx264 @ 02527c60] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
        [libx264 @ 02527c60] profile High, level 2.0
    
        [libx264 @ 02527c60] 264 - core 130 r2274 c832fe9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x26
    
        4.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x133 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16
    
         chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=2 lookahead_threads=1 sliced_th
    
        reads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 we
    
        ightb=1 open_gop=0 weightp=2 keyint=150 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=120
    
        0 ratetol=1.0 qcomp=0.60 qpmin=10 qpmax=51 qpstep=4 ip_ratio=1.41 aq=1:1.00
    
        Output #0, mp4, to 'pipe:1':
    
          Metadata:
    
            encoder         : Lavf55.3.100
    
            Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 320x240, q=10-51, 1200 kb/s, 15360 tbn, 15 tbc
    
            Stream #0:1: Audio: mp3 (i[0][0][0] / 0x0069), 44100 Hz, mono, s16p, 128 kb/s
    
        Stream mapping:
    
          Stream #0:0 -> #0:0 (cinepak -> libx264)
    
          Stream #0:1 -> #0:1 (pcm_u8 -> libmp3lame)
    
        Press [q] to stop, [?] for help
    
        frame=  106 fps=0.0 q=10.0 size=       1kB time=00:00:06.94 bitrate=   1.4kbits/s
    
        frame=  150 fps=149 q=14.0 size=       1kB time=00:00:09.87 bitrate=   1.0kbits/s
    
        frame=  191 fps=126 q=16.0 size=       1kB time=00:00:12.61 bitrate=   0.8kbits/s
    
        frame=  244 fps=121 q=16.0 size=    2262kB time=00:00:16.14 bitrate=1147.6kbits/s
    
        frame=  303 fps=120 q=14.0 size=    2262kB time=00:00:20.08 bitrate= 922.2kbits/s
    
        frame=  354 fps=117 q=15.0 size=    3035kB time=00:00:23.48 bitrate=1058.6kbits/s
    
        frame=  402 fps=113 q=15.0 size=    3035kB time=00:00:26.67 bitrate= 932.1kbits/s
    
        frame=  459 fps=113 q=16.0 size=    4041kB time=00:00:30.43 bitrate=1087.7kbits/s
    
        frame=  510 fps=103 q=2686559.0 Lsize=    5755kB time=00:00:33.93 bitrate=1389.3kbits/s
    

    
        video:5211kB audio:531kB subtitle:0 global headers:0kB muxing overhead 0.235111%
    
        [libx264 @ 02527c60] frame I:6     Avg QP:10.55  size: 25921
    
        [libx264 @ 02527c60] frame P:245   Avg QP:12.15  size: 14543
    
        [libx264 @ 02527c60] frame B:259   Avg QP:15.55  size:  6242
    
        [libx264 @ 02527c60] consecutive B-frames:  6.1% 73.7% 14.7%  5.5%
    
        [libx264 @ 02527c60] mb I  I16..4: 19.9%  6.2% 73.9%
    
        [libx264 @ 02527c60] mb P  I16..4:  6.0%  0.2% 12.0%  P16..4: 35.4%  9.6% 16.3%  7.0%  5.6%    skip: 7.8%
    
        [libx264 @ 02527c60] mb B  I16..4:  0.7%  0.0%  4.3%  B16..8: 27.6% 17.2% 17.0%  direct:17.3%  skip:15.9%  L0:39.4% L1:43.2%
    
        BI:17.4%
    
        [libx264 @ 02527c60] final ratefactor: 11.41
    
        [libx264 @ 02527c60] 8x8 transform intra:1.6% inter:4.0%
    
        [libx264 @ 02527c60] coded y,uvDC,uvAC intra: 93.0% 97.0% 94.9% inter: 58.4% 58.7% 50.6%
    
        [libx264 @ 02527c60] i16 v,h,dc,p: 15% 26% 54%  5%
    
        [libx264 @ 02527c60] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 17% 39%  4%  4%  3%  1%  6%  9%
    
        [libx264 @ 02527c60] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 34% 21%  4%  2%  2%  2%  2%  5%
    
        [libx264 @ 02527c60] i8c dc,h,v,p: 51% 24% 19%  6%
    
        [libx264 @ 02527c60] Weighted P-Frames: Y:4.1% UV:1.2%
    
        [libx264 @ 02527c60] ref P L0: 68.2%  9.8% 11.0%  5.6%  4.6%  0.8%  0.0%
    
        [libx264 @ 02527c60] ref B L0: 87.7%  8.0%  3.9%  0.4%
    
        [libx264 @ 02527c60] ref B L1: 97.8%  2.2%
    
        [libx264 @ 02527c60] kb/s:1255.36

    Lastly this is my node code fireing up FFMPEG. (I use the module Fluent-ffmpeg : https://github.com/schaermu/node-fluent-ffmpeg )

        var proc = new ffmpeg({ source: movie, nolog: true, timeout:15000})                         
    
        .addOptions(['-r 15','-b:v 128k','-c:v libx264','-x264opts level=41','-threads 4','-s 640x480','-map 0:v','-map 0:a:0','-c:a mp3','-b:a 160000','-ac 2','-f hls','-hls_time 10','-hls_list_size 6','-hls_wrap 18','-start_number 1 stream.m3u8'])
    
        .writeToStream(res, function(retcode, error){
    
            if (!error){
    
                console.log('file has been converted succesfully',retcode .green);
    
            }else{
    
                console.log('file conversion error',error .red);
    
            }
    
        });

    So to conclude this very long and code heavy question :

    I hope this does not come off as a lazy request, but could someone show/explain to me which FFMPEG settings could/should work on all platforms (modern browsers, Android and iOS) producing a stream of a static file which I can send to a HTML5 player.

    [EDIT] what I need if a generic option isn't available

    And if this is not possible as some posts might suggest, I would love to see a set of FFMPEG settings that get's the job done properly as far as mp4 streaming is concerned. (e.g encoding a streamable mp4).

    The streaming mp4 needs the following

    • A shifted moovAtom
    • It needs to be h264

    Thanks very much for your help !

  • cPanel - does installing modules via easyapache overwrite php.ini ?

    22 septembre 2013, par i.h4d35

    I have a little script in bash which automates the installation of ffmpeg and ffmpeg's php module on a server. At the end of this, it appends extension=ffmpeg.so to the end of php.ini and restarts the httpd service.

    My question is, in cPanel servers, say the user installs some other module using easy apache, would that overwrite the php.ini file. In which case, how do I make sure that the extension=ffmpeg.so is always added at the end ?

    One possible solution I thought of was to have a cron set which periodically checks the php.ini file but that doesn't look like the right solution.

  • Streaming Webcam using VLC +FFmpeg over lan - Error : cannot pre fill buffer

    23 juin 2016, par user1804015

    I’ve been trying to stream my webcam over lan using VLC and FFmpeg

    but I end up with the error "Main stream error : cannot pre fill buffer"

    Here is the code I’ve tried

    ffmpeg -f x11grab -s 1680x1050 -r 30 -i :0.0+0,0 -vf "movie=/dev/video0:f=video4linux2, scale=180:-1, setpts=PTS-STARTPTS [movie]; [in] setpts=PTS-STARTPTS, [movie] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out]" -f alsa -ac 2 -i pulse -vcodec libx264 -preset ultrafast -s 1280x768 -acodec libfaac -threads 0 -f mpegts - | vlc -I dummy - --sout '#std{access=http,mux=ts,dst=thalha:3030}'

    And this is the output

    VLC media player 1.1.9 The Luggage (revision exported)
    
FFmpeg version 0.6.6-4:0.6.6-0ubuntu0.11.04.1, Copyright (c) 2000-2010 the Libav developers
    
  built on Jun 12 2012 16:28:21 with gcc 4.5.2
    
  configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --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=4:0.6.6-1ubuntu1+medibuntu1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-version3 --enable-vaapi --enable-libopenjpeg --enable-libfaac --enable-nonfree --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libfaad --enable-libdirac --enable-libfaad --enable-libmp3lame --enable-librtmp --enable-libx264 --enable-libxvid --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavcodec  configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --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=4:0.6.6-0ubuntu0.11.04.1 --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=4:0.6.6-0ubuntu0.11.04.1 --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=4:0.6.6-0ubuntu0.11.04.1 --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=4:0.6.6-0ubuntu0.11.04.1 --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=4:0.6.6-0ubuntu0.11.04.1 --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 @ 0x98e8420]device: :0.0+0,0 -> display: :0.0 x: 0 y: 0 width: 1680 height: 1050
    
[x11grab @ 0x98e8420]shared memory extension  found
    
X Error of failed request:  BadMatch (invalid parameter attributes)
    
  Major opcode of failed request:  140 (MIT-SHM)
    
  Minor opcode of failed request:  4 (X_ShmGetImage)
    
  Serial number of failed request:  11
    
  Current serial number in output stream:  11
    
Warning: call to srand(1352225865)
    
Warning: call to rand()
    
Blocked: call to unsetenv("DBUS_ACTIVATION_ADDRESS")
    
Blocked: call to unsetenv("DBUS_ACTIVATION_BUS_TYPE")
    
[0x9782aec] dummy interface: using the dummy interface module...
    
[0x987258c] main access out: creating httpd
    
[0x98d0764] main stream error: cannot pre fill buffer

    Please help me to achieve this. Thanks in advance.

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