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• How do I stream audio from a mic in a raspberry pi with FFmpeg ?

  23 mars 2024, par Ignacio

  I'm trying to follow this to stream audio from a mic in my raspberry pi.

  


  ignacio@pi-satellite-bigbedroom:~ $ ffmpeg -re -f pulse -ac 1 -i plughw:CARD=seeed2micvoicec,DEV=0 -f rtsp -rtsp_transport tcp rtsp://192.168.86.151:8554/live.stream
ffmpeg version 4.3.6-0+deb11u1+rpt5 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 10 (Debian 10.2.1-6)
  configuration: --prefix=/usr --extra-version=0+deb11u1+rpt5 --toolchain=hardened --incdir=/usr/include/aarch64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --disable-mmal --enable-neon --enable-v4l2-request --enable-libudev --enable-epoxy --enable-sand --libdir=/usr/lib/aarch64-linux-gnu --arch=arm64 --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  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
plughw:CARD=seeed2micvoicec,DEV=0: No such process


  


  I believe this shows the cards I have :

  


  ignacio@pi-satellite-bigbedroom:~ $ pactl list sources
Source #0
    State: SUSPENDED
    Name: alsa_output.platform-bcm2835_audio.analog-stereo.monitor
    Description: Monitor of Built-in Audio Analog Stereo
    Driver: module-alsa-card.c
    Sample Specification: s16le 2ch 44100Hz
    Channel Map: front-left,front-right
    Owner Module: 4
    Mute: no
    Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
            balance 0.00
    Base Volume: 65536 / 100% / 0.00 dB
    Monitor of Sink: alsa_output.platform-bcm2835_audio.analog-stereo
    Latency: 0 usec, configured 0 usec
    Flags: DECIBEL_VOLUME LATENCY 
    Properties:
        device.description = "Monitor of Built-in Audio Analog Stereo"
        device.class = "monitor"
        alsa.card = "0"
        alsa.card_name = "bcm2835 Headphones"
        alsa.long_card_name = "bcm2835 Headphones"
        alsa.driver_name = "snd_bcm2835"
        device.bus_path = "platform-bcm2835_audio"
        sysfs.path = "/devices/platform/soc/3f00b840.mailbox/bcm2835_audio/sound/card0"
        device.form_factor = "internal"
        device.string = "0"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card"
    Formats:
        pcm

Source #1
    State: IDLE
    Name: alsa_output.platform-soc_sound.stereo-fallback.monitor
    Description: Monitor of Built-in Audio Stereo
    Driver: module-alsa-card.c
    Sample Specification: s16le 2ch 44100Hz
    Channel Map: front-left,front-right
    Owner Module: 12
    Mute: no
    Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
            balance 0.00
    Base Volume: 65536 / 100% / 0.00 dB
    Monitor of Sink: alsa_output.platform-soc_sound.stereo-fallback
    Latency: 0 usec, configured 2000000 usec
    Flags: DECIBEL_VOLUME LATENCY 
    Properties:
        device.description = "Monitor of Built-in Audio Stereo"
        device.class = "monitor"
        alsa.card = "2"
        alsa.card_name = "seeed-2mic-voicecard"
        alsa.long_card_name = "seeed-2mic-voicecard"
        alsa.driver_name = "snd_soc_simple_card"
        device.bus_path = "platform-soc:sound"
        sysfs.path = "/devices/platform/soc/soc:sound/sound/card2"
        device.form_factor = "internal"
        device.string = "2"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card"
    Formats:
        pcm

Source #2
    State: RUNNING
    Name: alsa_input.platform-soc_sound.stereo-fallback
    Description: Built-in Audio Stereo
    Driver: module-alsa-card.c
    Sample Specification: s16le 2ch 44100Hz
    Channel Map: front-left,front-right
    Owner Module: 12
    Mute: no
    Volume: front-left: 32845 /  50% / -18.00 dB,   front-right: 32845 /  50% / -18.00 dB
            balance 0.00
    Base Volume: 20724 /  32% / -30.00 dB
    Monitor of Sink: n/a
    Latency: 688 usec, configured 10000 usec
    Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
    Properties:
        alsa.resolution_bits = "16"
        device.api = "alsa"
        device.class = "sound"
        alsa.class = "generic"
        alsa.subclass = "generic-mix"
        alsa.name = "bcm2835-i2s-wm8960-hifi wm8960-hifi-0"
        alsa.id = "bcm2835-i2s-wm8960-hifi wm8960-hifi-0"
        alsa.subdevice = "0"
        alsa.subdevice_name = "subdevice #0"
        alsa.device = "0"
        alsa.card = "2"
        alsa.card_name = "seeed-2mic-voicecard"
        alsa.long_card_name = "seeed-2mic-voicecard"
        alsa.driver_name = "snd_soc_simple_card"
        device.bus_path = "platform-soc:sound"
        sysfs.path = "/devices/platform/soc/soc:sound/sound/card2"
        device.form_factor = "internal"
        device.string = "hw:2"
        device.buffering.buffer_size = "352800"
        device.buffering.fragment_size = "176400"
        device.access_mode = "mmap+timer"
        device.profile.name = "stereo-fallback"
        device.profile.description = "Stereo"
        device.description = "Built-in Audio Stereo"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card"
    Ports:
        analog-input: Analog Input (type: Analog, priority: 10000, availability unknown)
    Active Port: analog-input
    Formats:
        pcm


  


  I want to use the mic from the seeed-2mic-voicecard.

  


  Thanks for the help

  


• Can't connect to ffserver when running on android device

  11 décembre 2016, par Antonio C G

  I am working on an android app. This will run a ffserver (on the device, not another computer). The server is running and I can access the status page, everything seems ok. But when I try to send the video using ffmpeg I always get connection refused.

  This is my ffserver.conf file :

  HTTPPort 8090
  
  HTTPBindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 1000
  
  CustomLog /data/user/0/com.antonio.droidcast/files/log.txt
  
  NoDefaults
  
  
  
  <feed>
  
      File /data/user/0/com.antonio.droidcast/cache/feed1.ffm
  
      FileMaxSize 200M
  
      ACL allow 127.0.0.1
  
  </feed>
  
  
  
  <stream>
  
      Format mp4
  
      Feed feed1.ffm
  
  
  
      VideoCodec libx264
  
      VideoFrameRate 30
  
      VideoBitRate 512
  
      VideoSize 320x240
  
      AVOptionVideo crf 23
  
      AVOptionVideo preset medium
  
      AVOptionVideo flags +global_header
  
  
  
      AudioCodec aac
  
      Strict -2
  
      AudioBitRate 128
  
      AudioChannels 2
  
      AudioSampleRate 44100
  
      AVOptionAudio flags +global_header
  
  </stream>

  I connect to server using this command :

  ffmpeg -i VIDEO_PATH2 http://localhost:8090/feed1.ffm

  And this is the ouput I get :

  Splitting the commandline.
  
  Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
  
  Reading option '-i' ... matched as input file with argument '/storage/emulated/0/Download/video1.mp4'.
  
  Reading option 'http://localhost:8090/feed1.ffm' ... matched as output file.
  
  Finished splitting the commandline.
  
  Parsing a group of options: global .
  
  Applying option loglevel (set logging level) with argument debug.
  
  Successfully parsed a group of options.
  
  Parsing a group of options: input file /storage/emulated/0/Download/video1.mp4.
  
  Successfully parsed a group of options.
  
  Opening an input file: /storage/emulated/0/Download/video1.mp4.
  
  [file @ 0xf5f5e060] Setting default whitelist 'file,crypto'
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0xf5f58000] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0xf5f58000] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0xf5f58000] Unknown dref type 0x08206c7275 size 12
  
      Last message repeated 1 times
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0xf5f58000] Before avformat_find_stream_info() pos: 5446 bytes read:32768 seeks:0
  
  [h264 @ 0xf5f49000] user data:"x264 - core 148 - 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=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=1 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"
  
  [h264 @ 0xf5f49000] no picture 
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0xf5f58000] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0xf5f58000] After avformat_find_stream_info() pos: 6081 bytes read:98304 seeks:2 frames:3
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Download/video1.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.25.100
  
    Duration: 00:02:45.59, start: 0.128000, bitrate: 24 kb/s
  
      Stream #0:0(eng), 2, 1/450000: Video: h264 (High), 4 reference frames (avc1 / 0x31637661), yuv420p(left), 1920x1080 (1920x1088) [SAR 1:1 DAR 16:9], 7451717/900000, 0 kb/s, 0.06 fps, 0.06 tbr, 450k tbn, 0.12 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng), 1, 1/8000: Audio: aac (LC) (mp4a / 0x6134706D), 8000 Hz, mono, fltp, 29 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Successfully opened the file.
  
  Parsing a group of options: output file http://localhost:8090/feed1.ffm.
  
  Successfully parsed a group of options.
  
  Opening an output file: http://localhost:8090/feed1.ffm.
  
  [http @ 0xf5f5e1e0] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy'
  
  [tcp @ 0xf5f5e3c0] Connection to tcp://localhost:8090 failed: Connection refused
  
  http://localhost:8090/feed1.ffm: Connection refused

  Does anybody know what could be wrong ?
  Just to be clear, I recompiled ffserver and ffmpeg for android. They both seem to be ok as I can execute commands. Both binaries are part of the app, so everything runs inside the phone.

  Thanks.

• Android FFmpeg mp41 fps drop

  4 mai 2020, par Yiğit Can YILMAZ

  I am using FFmpeg to trim videos in my project. It's working well with most of the videos. But, I am having problems with some videos that have isomiso2avc1mp41 format. I am not familiar with video proccessing part but when i watch video it seems like having fps drop problem.

  



  I have tried some methods like addding -framerate 24 or -r 24 to FFmpeg execution commands to set fps rate and converting mp41 to mp42 by using -brand mp42 but I could not achieved to overcame this problem. Can anyone help me to figure this out, please ?

  



  Thanks

  



  this my code snippet :

  



  String[] cropCommand = {"-y", "-i", inputFile, "-ss", "" + startMs / 1000, "-t", "" + (endMs - startMs) / 1000, "-c", "copy", outputFile};

        Log.i("cropcommand", Arrays.toString(cropCommand));
        final int finalHeight = height;
        final int finalWidht = width;
        FFmpeg.getInstance(context).execute(cropCommand, new ExecuteBinaryResponseHandler() {

            @Override
            public void onFailure(String message) {
                //   callback.onCancel();

            }

            @Override
            public void onProgress(String message) {
                super.onProgress(message);
                Log.e("ffmpeg", message);
            }

            @Override
            public void onSuccess(String s) {

                Log.i("videosize", "output " + String.valueOf(getFileSize(outputFile)));

            }

            @Override
            public void onStart() {
                Log.i("videosize", "input " + String.valueOf(getFileSize(inputFile)));

            }
        });
    } catch (FFmpegCommandAlreadyRunningException e) {
        e.printStackTrace();
        //  callback.onCancel();
    }


  



  and this is log of trial with issue :

  



      D/FFmpeg: Running publishing updates method
E/ffmpeg: ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
      built with gcc 4.8 (GCC)
      configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
      libavutil      55. 17.103 / 55. 17.103
      libavcodec     57. 24.102 / 57. 24.102
      libavformat    57. 25.100 / 57. 25.100
      libavdevice    57.  0.101 / 57.  0.101
      libavfilter     6. 31.100 /  6. 31.100
      libswscale      4.  0.100 /  4.  0.100
      libswresample   2.  0.101 /  2.  0.101
E/ffmpeg:   libpostproc    54.  0.100 / 54.  0.100
E/ffmpeg: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/WhatsApp/Media/WhatsApp Video/VID-20190724-WA0012.mp4':
      Metadata:
        major_brand     : isom
        minor_version   : 512
        compatible_brands: isomiso2avc1mp41
        encoder         : Lavf58.23.100
      Duration: 00:04:01.95, start: 0.000000, bitrate: 410 kb/s
        Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 274 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
        Metadata:
          handler_name    : ISO Media file produced by Google Inc. Created on: 07/17/2019.
E/ffmpeg:     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
        Metadata:
          handler_name    : ISO Media file produced by Google Inc. Created on: 07/17/2019.
    Output #0, mp4, to '/storage/emulated/0/Spoorcu/SPOORCU20200504102627.mp4':
      Metadata:
        major_brand     : isom
        minor_version   : 512
E/ffmpeg:     compatible_brands: isomiso2avc1mp41
        encoder         : Lavf57.25.100
        Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 274 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 30k tbc (default)
        Metadata:
          handler_name    : ISO Media file produced by Google Inc. Created on: 07/17/2019.
        Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, 127 kb/s (default)
        Metadata:
E/ffmpeg:       handler_name    : ISO Media file produced by Google Inc. Created on: 07/17/2019.
    Stream mapping:
      Stream #0:0 -> #0:0 (copy)
      Stream #0:1 -> #0:1 (copy)
    Press [q] to stop, [?] for help
E/ffmpeg: frame= 1177 fps=0.0 q=-1.0 Lsize=    2089kB time=00:00:45.02 bitrate= 380.1kbits/s speed= 606x    
    video:1338kB audio:708kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.144393%
I/videosize: output 2089
I/tangpeng: bitrate=3000000
E/tmessages: time = 955