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Sur d’autres sites (4745)

  • FFMpeg Concat Filter - Setting start position for file

    9 avril 2014, par Joyce Babu

    I want to concat two video files using the concat filter. The first file has to be included fully, whereas the second video must be included from the 10th second. Do I need to first create an intermediate file starting from the 10th second, or can I do it in one step ?

    The command I am using is

    /usr/local/bin/ffmpeg -i intro.mp4 -i input.mp4 -filter_complex '[0:v] scale=720:576 [in1]; [1:v] scale=720:576 [in2]; [in1][in2] concat [v]; [0:a][1:a] concat=v=0:a=1 [a]' -map '[v]' -map '[a]' output.mp4

    I tried specifying -ss after -i input.mp4, but it is applied on the final output file.

    iMac:files joyce$ /usr/local/bin/ffmpeg -i intro.mp4 -i input.mp4 -filter_complex '[0:v] scale=720:576 [in1]; [1:v] scale=720:576 [in2]; [in1][in2] concat [v]; [0:a][1:a] concat=v=0:a=1 [a]' -map '[v]' -map '[a]' output.mp4
    
ffmpeg version 2.1.4 Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Mar 22 2014 16:19:43 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.1.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libfdk-aac
    
  libavutil      52. 48.101 / 52. 48.101
    
  libavcodec     55. 39.101 / 55. 39.101
    
  libavformat    55. 19.104 / 55. 19.104
    
  libavdevice    55.  5.100 / 55.  5.100
    
  libavfilter     3. 90.100 /  3. 90.100
    
  libavresample   1.  1.  0 /  1.  1.  0
    
  libswscale      2.  5.101 /  2.  5.101
    
  libswresample   0. 17.104 /  0. 17.104
    
  libpostproc    52.  3.100 / 52.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'intro.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf55.19.104
    
  Duration: 00:00:03.05, start: 0.046440, bitrate: 1304 kb/s
    
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 1167 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 132 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf55.19.104
    
    episode_sort    : 1
    
    season_number   : 1
    
    media_type      : 9
    
    hd_video        : 0
    
  Duration: 00:00:45.43, start: 0.042667, bitrate: 906 kb/s
    
    Stream #1:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 720x576 [SAR 1:1 DAR 5:4], 774 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #1:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
File 'output.mp4' already exists. Overwrite ? [y/N] y
    
[libx264 @ 0x7fa9a8828e00] using SAR=1/1
    
[libx264 @ 0x7fa9a8828e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
    
[libx264 @ 0x7fa9a8828e00] profile High, level 3.1
    
[libx264 @ 0x7fa9a8828e00] 264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 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=6 lookahead_threads=1 sliced_threads=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 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to 'output.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf55.19.104
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x576 [SAR 1:1 DAR 5:4], q=-1--1, 30k tbn, 29.97 tbc (default)
    
    Stream #0:1: Audio: aac (libfaac) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s (default)
    
Stream mapping:
    
  Stream #0:0 (h264) -> scale
    
  Stream #0:1 (aac) -> concat:in0:a0
    
  Stream #1:0 (h264) -> scale
    
  Stream #1:1 (aac) -> concat:in1:a0
    
  concat -> Stream #0:0 (libx264)
    
  concat -> Stream #0:1 (libfaac)
    
Press [q] to stop, [?] for help
    
frame= 1453 fps= 42 q=-1.0 Lsize=    4536kB time=00:00:48.50 bitrate= 766.1kbits/s dup=227 drop=0    
    
video:3796kB audio:691kB subtitle:0 global headers:0kB muxing overhead 1.102067%
    
[libx264 @ 0x7fa9a8828e00] frame I:31    Avg QP:17.02  size: 14953
    
[libx264 @ 0x7fa9a8828e00] frame P:764   Avg QP:24.14  size:  3677
    
[libx264 @ 0x7fa9a8828e00] frame B:658   Avg QP:28.17  size:   933
    
[libx264 @ 0x7fa9a8828e00] consecutive B-frames: 36.4%  6.2% 10.3% 47.1%
    
[libx264 @ 0x7fa9a8828e00] mb I  I16..4: 40.4% 32.3% 27.3%
    
[libx264 @ 0x7fa9a8828e00] mb P  I16..4:  6.6%  4.0%  1.1%  P16..4: 25.2%  5.7%  2.3%  0.0%  0.0%    skip:55.0%
    
[libx264 @ 0x7fa9a8828e00] mb B  I16..4:  0.8%  0.4%  0.2%  B16..8: 24.5%  1.7%  0.2%  direct: 0.5%  skip:71.6%  L0:50.7% L1:45.5% BI: 3.9%
    
[libx264 @ 0x7fa9a8828e00] 8x8 transform intra:33.3% inter:59.0%
    
[libx264 @ 0x7fa9a8828e00] coded y,uvDC,uvAC intra: 26.4% 41.2% 8.0% inter: 5.6% 7.9% 0.2%
    
[libx264 @ 0x7fa9a8828e00] i16 v,h,dc,p: 46% 29%  8% 17%
    
[libx264 @ 0x7fa9a8828e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 19% 28%  3%  3%  4%  3%  4%  3%
    
[libx264 @ 0x7fa9a8828e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 34% 22% 13%  4%  6%  7%  5%  5%  3%
    
[libx264 @ 0x7fa9a8828e00] i8c dc,h,v,p: 57% 19% 20%  4%
    
[libx264 @ 0x7fa9a8828e00] Weighted P-Frames: Y:1.8% UV:1.2%
    
[libx264 @ 0x7fa9a8828e00] ref P L0: 73.2%  9.1% 11.7%  5.3%  0.7%
    
[libx264 @ 0x7fa9a8828e00] ref B L0: 89.3%  8.9%  1.8%
    
[libx264 @ 0x7fa9a8828e00] ref B L1: 95.3%  4.7%
    
[libx264 @ 0x7fa9a8828e00] kb/s:641.26

  • ffmpeg filters image processing

    15 décembre 2017, par Ja_cpp

    ffmpeg is applying some filters to the images before constructing the video. Is there any way to know those filters ?

    I’m using this command (so every parameters are kept by default) :

    ffmpeg -framerate 12 -i frame%02d.jpg out.mp4

    Example of one frame :

    Image file :

    enter image description here

    From the video :
    enter image description here

    I’m working on image processing with c++ and I’m interested in the way ffmpeg filtering the images

    EDIT

    When I launch the command line, that what I get in the terminal :

    ffmpeg -framerate 5 -i frame%02d.jpg output.mp4
    

    

    
ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
    
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
    
  libavutil      54. 31.100 / 54. 31.100
    
  libavcodec     56. 60.100 / 56. 60.100
    
  libavformat    56. 40.101 / 56. 40.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 40.101 /  5. 40.101
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  2.101 /  1.  2.101
    
  libpostproc    53.  3.100 / 53.  3.100
    
[mjpeg @ 0x23e8600] Changeing bps to 8
    
Input #0, image2, from 'frame%02d.jpg':
    
  Duration: 00:01:40.20, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 2576x1456 [SAR 1:1 DAR 23:13], 5 fps, 5 tbr, 5 tbn, 5 tbc
    
No pixel format specified, yuvj420p for H.264 encoding chosen.
    
Use -pix_fmt yuv420p for compatibility with outdated media players.
    
[libx264 @ 0x23ec680] using SAR=1/1
    
[libx264 @ 0x23ec680] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 0x23ec680] profile High, level 5.0
    
[libx264 @ 0x23ec680] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 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=12 lookahead_threads=2 sliced_threads=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 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=5 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to 'output.mp4':
    
  Metadata:
    
    encoder         : Lavf56.40.101
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj420p(pc), 2576x1456 [SAR 1:1 DAR 23:13], q=-1--1, 5 fps, 10240 tbn, 5 tbc
    
    Metadata:
    
      encoder         : Lavc56.60.100 libx264
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
    
Press [q] to stop, [?] for help
    
frame=  501 fps=3.8 q=-1.0 Lsize=  154288kB time=00:01:39.80 bitrate=12664.6kbits/s    
    
video:154284kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.002771%
    
[libx264 @ 0x23ec680] frame I:3     Avg QP:17.31  size:564506
    
[libx264 @ 0x23ec680] frame P:498   Avg QP:19.27  size:313841
    
[libx264 @ 0x23ec680] mb I  I16..4:  0.2% 97.1%  2.7%
    
[libx264 @ 0x23ec680] mb P  I16..4:  0.0% 46.3%  0.5%  P16..4: 12.5% 13.0%  7.7%  0.0%  0.0%    skip:20.1%
    
[libx264 @ 0x23ec680] 8x8 transform intra:98.9% inter:73.3%
    
[libx264 @ 0x23ec680] coded y,uvDC,uvAC intra: 99.0% 99.7% 96.0% inter: 52.0% 57.7% 37.0%
    
[libx264 @ 0x23ec680] i16 v,h,dc,p: 17% 16% 13% 54%
    
[libx264 @ 0x23ec680] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 12% 33%  6%  7%  6%  8%  7% 10%
    
[libx264 @ 0x23ec680] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 13% 14% 10% 13%  9% 11%  8% 10%
    
[libx264 @ 0x23ec680] i8c dc,h,v,p: 66% 14% 14%  5%
    
[libx264 @ 0x23ec680] Weighted P-Frames: Y:2.0% UV:1.2%
    
[libx264 @ 0x23ec680] ref P L0: 45.6% 16.0% 20.4% 17.6%  0.5%
    
[libx264 @ 0x23ec680] kb/s:12613.66

  • Error when trying to launch ffplay on Ubuntu server 16

    18 décembre 2019, par Nicolas

    For work I need to get a video+audio link working between a machine running Ubuntu server 16 and a client machine running Ubuntu 18.04.
    On the server side we have a webcam (with a microphone) and a speaker. The idea is that the client can see and hear what happens in front of the webcam, and can talk to whoever is next to the server.

    For this purpose, I run ffserver+ffmpeg on the server side to stream video and audio (that works, the client can see and hear what happens around the server), and the client also runs ffserver+ffmpeg on a different port, so that the server can use ffplay to hear what the client says.
    Unfortunately for some reason at the moment the server cannot run ffplay. I get the following error :

     # ffplay -probesize 32 -sync ext http://localhost:8090/camera.rm
    
   ffplay version 2.8.15-0ubuntu0.16.04.1 Copyright (c) 2003-2018 the FFmpeg developers
    
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
    
   configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enableopengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
    
   libavutil      54. 31.100 / 54. 31.100
    
   libavcodec     56. 60.100 / 56. 60.100
    
   libavformat    56. 40.101 / 56. 40.101
    
   libavdevice    56.  4.100 / 56.  4.100
    
   libavfilter     5. 40.101 /  5. 40.101
    
   libavresample   2.  1.  0 /  2.  1.  0
    
   libswscale      3.  1.101 /  3.  1.101
    
   libswresample   1.  2.101 /  1.  2.101
    
   libpostproc    53.  3.100 / 53.  3.100
    
 ALSA lib pcm_dmix.c:1029:(snd_pcm_dmix_open) unable to open slave
    
 Input #0, rm, from 'http://localhost:8090/camera.rm':    0B f=0/0   
    
   Metadata:
    
     title           : 
    
     author          : 
    
     copyright       : 
    
     comment         : 
    
   Duration: 01:00:00.00, start: 0.000000, bitrate: N/A
    
     Stream #0:0: Audio: ac3 (dnet / 0x74656E64), 22050 Hz, mono, fltp, 32 kb/s
    
     Stream #0:1: Video: rv10 (RV10 / 0x30315652), yuv420p, 640x480, 2048 kb/s, 24464 fps, 24464 tbr, 1k tbn, 1k tbc
    
 SDL_OpenAudio (1 channels, 22050 Hz): 
    
 No more combinations to try, audio open failed

    To be noted : ffplay has worked in the past on this server. The only modifications that were made are that I added some feeds and streams in the ffserver.conf, but they are not even used. I tried marking my additions as comments and repeating the test, but ffplay still doesn’t work.

    My ffserver.conf file is as below :

    HTTPPort            8090
    
HTTPBindAddress     0.0.0.0
    
MaxHTTPConnections 200
    
MaxClients      100
    
MaxBandWidth    500000
    
CustomLog       -
    
#NoDaemon
    

    
<feed>
    
File            /tmp/camera.ffm
    
FileMaxSize     200M
    
</feed>
    

    
#<feed>
    
#File            /tmp/test.ffm
    
#FileMaxSize     200k
    
#</feed>
    

    
#<feed>
    
#File /tmp/audio.ffm>
    
#FileMaxSize 200M
    
#</feed>
    

    
<stream>
    
Feed camera.ffm
    
Format rm
    
AudioBitRate 32
    
VideoFrameRate 15
    
VideoIntraOnly
    
VideoBitRate 2048
    
VideoBufferSize 2048
    
VideoSize 640x480
    
VideoQMin 5
    
VideoQMax 51
    
Strict -1
    
</stream>
    

    
#<stream>
    
#Feed test.ffm
    
#AudioBitRate 32
    
#AudioChannels 1
    
#AudioSampleRate 44100
    
#VideoBitRate 512
    
#VideoBufferSize 40
    
#VideoFrameRate 24
    
#VideoSize 640x640
    
#VideoGopSize 12
    
#VideoQMin 1
    
#VideoQMax 15
    
#</stream>
    

    
#<stream>
    
#Feed audio.ffm
    
#Format rm
    
#AudioBitRate 128
    
#NoVideo
    
#</stream>

    And I use the following commands :

    On the server side : ffserver -f /etc/ffserver.conf

    and : ffmpeg -f v4l2 -i /dev/video0 -f alsa -ac 2 -i hw:0 http://localhost:8090/camera.ffm

    and to receive audio : ffplay -probesize 32 -sync ext http://10.1.0.244:8080/audio.ra

    And on the client side : ffserver -f /etc/ffserver.conf

    and : ffmpeg -f alsa -ac 2 -i hw:0 http://localhost:8080/audio.ffm

    The two ffserver.conf files (on server and client) are identical, apart for the port which is different (8090 on the server and 8080 on the client).

    Does anyone have any idea why ffplay won’t start on my server ?
    Thanks,
    Nicolas.

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