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• How to overlay 2 videos, one is main second one is overlaying it, and play sound simultaneously. using FFMPEG in ANDROID STUDIO

  6 août 2020, par Dusan Lilic

  as title say I'm trying to overlay 2 videos and play sound simultaneously. So far i managed to put 1 video over another using this command :

  


  String[] command = {"-i", mainVideoPath, "-vf",
            "movie=" + overlayVideo + ", scale=300:-1[inner]; [in][inner]overlay=10:10[out]" ,combinedVideoOutput};


  


  and this works but I have 3 problems here.
First, video is rotated by 90 degrees (overlay video), second Audio is played only from main video (I want to play sound from both videos simultaneously), and third overlay video is longer (for example : overlayVideo duration is 10 seconds and main video last 7 seconds) then mainVideo, so i want to final video last as long as mainVideo, as soon as mainVideo finish, overlayVideo should also stop (need to cut it prolly ?)

  


  String[] command = {"-i", mainVideoPath, "-i", overlayVideo ,
            "-filter_complex", "[1:v][0:v]scale2ref=(256/256)*ih/8/sar:ih/8[wm][base];[base][wm]overlay=10:10" ,combinedVideoOutput};


  


  Using this command i have 2 problems same as above except video is not rotated here.
I have to say that I'm not very familiar with ffmpeg commands. I was trying to figure it out from documentation link to documentation but without any success.
I know that I'm missing some filters like -map merge or something but can't figure it out.
Thanks in advance !

  


  EDIT1 :
This is logcat from second commad as asked

  


  D/LISKO: ffmpeg version n4.0-39-gda39990 Copyright (c) 2000-2018 the FFmpeg developers
      built with gcc 4.9.x (GCC) 20150123 (prerelease)
D/LISKO:   configuration: --target-os=linux --cross-prefix=/root/bravobit/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/root/bravobit/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-ffprobe --enable-libopus --enable-libvorbis --enable-libfdk-aac --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-libvpx --enable-libass --enable-yasm --enable-pthreads --disable-debug --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-linux-perf --disable-doc --disable-shared --enable-static --enable-runtime-cpudetect --enable-nonfree --enable-network --enable-avresample --enable-avformat --enable-avcodec --enable-indev=lavfi --enable-hwaccels --enable-ffmpeg --enable-zlib --enable-gpl --enable-small --enable-nonfree --pkg-config=pkg-config --pkg-config-flags=--static --prefix=/root/bravobit/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/root/bravobit/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/root/bravobit/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-cxxflags=
D/LISKO:   libavutil      56. 14.100 / 56. 14.100
      libavcodec     58. 18.100 / 58. 18.100
      libavformat    58. 12.100 / 58. 12.100
      libavdevice    58.  3.100 / 58.  3.100
      libavfilter     7. 16.100 /  7. 16.100
D/LISKO:   libavresample   4.  0.  0 /  4.  0.  0
      libswscale      5.  1.100 /  5.  1.100
D/LISKO:   libswresample   3.  1.100 /  3.  1.100
      libpostproc    55.  1.100 / 55.  1.100
D/LISKO: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/mainVideo.mp4':
      Metadata:
        major_brand     : iso6
        minor_version   : 1
        compatible_brands: mp42iso6avc1isom
        creation_time   : 2020-08-03T13:20:11.000000Z
      Duration: 00:00:07.04, start: 0.000000, bitrate: 1380 kb/s
        Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 140 kb/s (default)
        Metadata:
          creation_time   : 2020-07-28T08:11:36.000000Z
        Stream #0:1(und): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 81:256 DAR 9:16], 1264 kb/s, 30 fps, 30 tbr, 90k tbn, 180k tbc (default)
        Metadata:
          creation_time   : 2020-07-28T08:11:36.000000Z
D/LISKO: Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/overlayVideo.mp4':
      Metadata:
        major_brand     : mp42
        minor_version   : 0
        compatible_brands: isommp42
        creation_time   : 2020-08-04T07:27:47.000000Z
        com.android.version: 10
      Duration: 00:00:11.19, start: 0.000000, bitrate: 9993 kb/s
D/LISKO:     Stream #1:0(eng): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720, 9238 kb/s, SAR 1:1 DAR 16:9, 28.38 fps, 29.75 tbr, 90k tbn, 180k tbc (default)
        Metadata:
          rotate          : 270
          creation_time   : 2020-08-04T07:27:47.000000Z
          handler_name    : VideoHandle
        Side data:
          displaymatrix: rotation of 90.00 degrees
        Stream #1:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)
        Metadata:
          creation_time   : 2020-08-04T07:27:47.000000Z
          handler_name    : SoundHandle
    Stream mapping:
      Stream #0:1 (h264) -> scale2ref:ref (graph 0)
      Stream #1:0 (h264) -> scale2ref:default (graph 0)
      overlay (graph 0) -> Stream #0:0 (libx264)
      Stream #0:0 -> #0:1 (aac (native) -> aac (native))
    Press [q] to stop, [?] for help
D/LISKO: [libx264 @ 0xee986100] using SAR=81/256
D/LISKO: [libx264 @ 0xee986100] using cpu capabilities: ARMv6 NEON
    [libx264 @ 0xee986100] profile High, level 3.1
D/LISKO: [libx264 @ 0xee986100] 264 - core 152 r2851M ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=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
D/LISKO: Output #0, mp4, to '/storage/emulated/0/outputVideo.mp4':
D/LISKO:   Metadata:
        major_brand     : iso6
D/LISKO:     minor_version   : 1
D/LISKO:     compatible_brands: mp42iso6avc1isom
D/LISKO:     encoder         : Lavf58.12.100
        Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 81:256 DAR 9:16], q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
D/LISKO:     Metadata:
          encoder         : Lavc58.18.100 libx264
        Side data:
          cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
D/LISKO:     Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
        Metadata:
          creation_time   : 2020-07-28T08:11:36.000000Z
D/LISKO:       encoder         : Lavc58.18.100 aac
D/LISKO: frame=   26 fps=0.0 q=0.0 size=       0kB time=00:00:00.09 bitrate=   4.1kbits/s dup=2 drop=0 speed=0.185x    
D/LISKO: frame=   41 fps= 41 q=0.0 size=       0kB time=00:00:00.58 bitrate=   0.7kbits/s dup=2 drop=0 speed=0.574x    
D/LISKO: frame=   49 fps= 32 q=0.0 size=       0kB time=00:00:00.92 bitrate=   0.4kbits/s dup=2 drop=0 speed=0.613x    
D/LISKO: frame=   59 fps= 29 q=29.0 size=       0kB time=00:00:01.97 bitrate=   0.2kbits/s dup=2 drop=0 speed=0.974x    
D/LISKO: frame=   75 fps= 29 q=29.0 size=       0kB time=00:00:01.97 bitrate=   0.2kbits/s dup=2 drop=0 speed=0.762x 


  


  EDIT2 :
After adding "-shortest" to command i managed to cut overlay video to be the same length as main video (because overlay video is always longer then mainVideo, "-shortest" take short one duration. So now, command looks like this :

  


      String[] command = {"-i", mainVideoPath, "-i", overlayVideo ,"-filter_complex", 
"[1:v][0:v]scale2ref=(256/256)*ih/8/sar:ih/8[wm][base];[base][wm]overlay=10:10", "-shortest", combinedVideoOutput};


  


  Rotation is good so only need to merge their audios. For now, only mainVideo audio is playing, overlay video audio isn't

  


  EDIT 3 :

  


     String[] command = {"-i", mainVideoPath, "-i", overlayVideo ,
            "-strict", "experimental",
            "-filter_complex",
            "[1:v][0:v]scale2ref=(256/256)*ih/8/sar:ih/8[wm][base];" +
                    "[base][wm]overlay=10:10; " +
                    "pan=stereo|c0=2*c0|c1=3*c0[a0];[1:a]pan=stereo|c0=1*c0|c1=4*c0[a1];[a0][a1]amix=inputs=2:duration=first:dropout_transition=2",
            "-shortest" ,combinedVideoOutput};


  


  With this command i managed to overlay videos, and play sound from both of them, rotation is good, but -shortest doesn't work now. Only existing problem now is to make them to last as shorter one (mainVideo is always shorter) ???

  


  EDIT 4 :

  


  This is finally working command

  


          String[] command = {"-i", mainVideoPath, "-i", overlayVideo,
            "-filter_complex",
            "[1:v][0:v]scale2ref=(256/256)*ih/8/sar:ih/8[wm][base];" +
                    "[base][wm]overlay=10:10:shortest=1;" +
                    "pan=stereo|c0=2*c0|c1=3*c0[a0];[1:a]pan=stereo|c0=1*c0|c1=4*c0[a1];" +
                    "[a0][a1]amix=inputs=2:duration=first:dropout_transition=2",
            combinedVideoOutput};


  


  Thanks

  


• avutil/internal : remove FF_ALLOCx{_ARRAY}_OR_GOTO macros

  2 juin 2020, par Limin Wang

  avutil/internal : remove FF_ALLOCx_ARRAY_OR_GOTO macros
  These functions have a terrible design, let us fix them before extending
  
  them.
  
  First design mistake : no error code. A helper function for testing
  
  memory allocation failure where AVERROR(ENOMEM) does not appear is
  
  absurd.
  Second design mistake : printing a message. Return the error code, let
  
  the caller print the error message.
  Third design mistake : hard-coded use of goto.
  http://ffmpeg.org/pipermail/ffmpeg-devel/2020-May/262544.html
  Signed-off-by : Limin Wang <lance.lmwang@gmail.com>
  

  • [DH] libavutil/internal.h

• ffmpeg stream videos from two cams have a same device name

  21 novembre 2020, par junsang

  There are two cameras have a same device name Microsoft® LifeCam Studio(TM).
  
ffmpeg -list_deivces true -f dshow -i dummy prints the below output.

  



  C:\Users\user>ffmpeg -list_devices true -f dshow -i dummy
ffmpeg version git-2020-02-05-e6891d1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.2.1 (GCC) 20200122
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 39.100 / 56. 39.100
  libavcodec     58. 67.101 / 58. 67.101
  libavformat    58. 37.100 / 58. 37.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 74.100 /  7. 74.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[dshow @ 000001d5c5108dc0] DirectShow video devices (some may be both video and audio devices)
[dshow @ 000001d5c5108dc0]  "Microsoft┬« LifeCam Studio(TM)"
[dshow @ 000001d5c5108dc0]     Alternative name "@device_pnp_\\?\usb#vid_045e&pid_0811&mi_00#8&6ae46e6&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
[dshow @ 000001d5c5108dc0]  "Microsoft┬« LifeCam Studio(TM)"
[dshow @ 000001d5c5108dc0]     Alternative name "@device_pnp_\\?\usb#vid_045e&pid_0811&mi_00#8&e544916&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
[dshow @ 000001d5c5108dc0] DirectShow audio devices
[dshow @ 000001d5c5108dc0]  "Desktop Microphone (6- Microsoft┬« LifeCam Studio(TM))"
[dshow @ 000001d5c5108dc0]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{D5F4881A-6E88-4563-8BA0-081CFD50E353}"
[dshow @ 000001d5c5108dc0]  "Desktop Microphone (5- Microsoft┬« LifeCam Studio(TM))"
[dshow @ 000001d5c5108dc0]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{84674B28-DC68-4AC0-8331-D687C7B7D69C}"
[dshow @ 000001d5c5108dc0]  "Digital Audio (S/PDIF) (High Definition Audio Device)"
[dshow @ 000001d5c5108dc0]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{CDD24485-59D2-4BED-B6FC-B7447251C7E2}"


  



  Because the two cameras have a same device name, I couldn't stream two videos using this simple command at a same time : ffplay -f dshow -i video=Microsoft® LifeCam Studio(TM).
  
So I used pin names following the ffmpeg dshow example.
The only thing I could check was Could not find video device with name [video=~~pin name~~] among source devices of type video.

  



  What ffplay command makes enable to stream both videos ?