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• Unable to add watermark to uploaded video using protonemedia / laravel-ffmpeg

  24 avril 2021, par Kashif Anwar

  thank you for the amazing package, i am using it first time and i am stuck in it, maybe i am doing something wrong. I am trying to add a watermark on a video so users couldn't download the original video. below is my code to upload a video first and then add watermark to that video :

  


  public function watermarkpost(Request $request)
{

    if ($file = $request->file('watermark')) 
    {      
       $name = time().str_replace(' ', '', $file->getClientOriginalName());
       $file->move('assets/images/products',$name);           
    }
        FFMpeg::open(asset('assets/images/products/'.$name))->addWatermark(function(WatermarkFactory $watermark) {
            $watermark
            ->open(asset('assets/images/1571567292logo.png') )
            ->right(25)
            ->bottom(25);
        });
   
    // return asset('assets/images/products/'.$name);
}


  


  but i am getting below error :

  


  Alchemy\\BinaryDriver\\Exception\\ExecutableNotFoundException(code: 0): Executable not found, proposed : ffmpeg at F:\\xampp\\htdocs\\GeniusCart\\project\\vendor\\alchemy\\binary-driver\\src\\Alchemy\\BinaryDriver\\AbstractBinary.php:159)


  


  Any help would be really appreciated

  


• audio and video out of sync streaming usb webcam to RTMP server

  2 avril 2021, par Mateus Garcia

  I'm trying to stream 4 webcams connected to my raspberry pi 4 to a nginx RTMP server (same network) using ffmpeg.

  


  this works well for the very first moments, but after some time the video is ahead of audio, and after some more time, they are totally out of sync.

  


  this is the command that i am running :

  


  ffmpeg -r 15 -s 384x288 -f video4linux2 -i /dev/video0 \
-f alsa -thread_queue_size 1024 -ac 1 -i hw:1 \
-f flv rtmp://192.168.0.100/live/cam1


  


  rtmp server is a docker image : tiangolo/nginx-rtmp

  


  client is VLC media player.

  


  Please help me. i dont know what more i can do.

  


  command output :

  


  [video4linux2,v4l2 @ 0x1a932b0] The V4L2 driver changed the video from 384x288 to 352x288
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, start: 6196.784888, bitrate: 24330 kb/s
    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 352x288, 24330 kb/s, 15 fps, 15 tbr, 1000k tbn, 1000k tbc
Guessed Channel Layout for Input Stream #1.0 : mono
Input #1, alsa, from 'hw:1':
  Duration: N/A, start: 1617338591.667887, bitrate: 768 kb/s
    Stream #1:0: Audio: pcm_s16le, 48000 Hz, mono, s16, 768 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> flv1 (flv))
  Stream #1:0 -> #0:1 (pcm_s16le (native) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
Output #0, flv, to 'rtmp://192.168.0.100/live/cam1':
  Metadata:
    encoder         : Lavf58.20.100
    Stream #0:0: Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p(progressive), 352x288, q=2-31, 200 kb/s, 15 fps, 1k tbn, 15 tbc
    Metadata:
      encoder         : Lavc58.35.100 flv
    Side data:
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
    Stream #0:1: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 48000 Hz, mono, s16p
    Metadata:
      encoder         : Lavc58.35.100 libmp3lame
frame=  639 fps= 15 q=2.0 size=    1513kB time=00:00:42.57 bitrate= 291.1kbits/s speed=0.993x    



  


• modprobe snd-dummy on linux server, ffmpeg -f alsa is recording noise

  20 mars 2021, par booksword

  Some people say that the parameter fake_buffer can remove the noise, but I tried it and there is still noise

  


  


  modprobe snd-dummy fake_buffer=0

  


  


  #modprobe snd-dummy fake_buffer=0 
# lsmod |grep snd
snd_dummy              24576  0
snd_pcm_oss            61440  0
snd_mixer_oss          28672  1 snd_pcm_oss
snd_pcm               118784  2 snd_pcm_oss,snd_dummy
snd_timer              36864  1 snd_pcm
snd                    94208  5 snd_timer,snd_pcm_oss,snd_pcm,snd_dummy,snd_mixer_oss
soundcore              16384  1 snd
# modinfo snd_dummy
filename:       /lib/modules/4.14.129-bbrplus/kernel/sound/drivers/snd-dummy.ko
license:        GPL
description:    Dummy soundcard (/dev/null)
author:         Jaroslav Kysela <perex@perex.cz>
depends:        snd-pcm,snd
retpoline:      Y
intree:         Y
name:           snd_dummy
vermagic:       4.14.129-bbrplus SMP mod_unload modversions 
parm:           index:Index value for dummy soundcard. (array of int)
parm:           id:ID string for dummy soundcard. (array of charp)
parm:           enable:Enable this dummy soundcard. (array of bool)
parm:           model:Soundcard model. (array of charp)
parm:           pcm_devs:PCM devices # (0-4) for dummy driver. (array of int)
parm:           pcm_substreams:PCM substreams # (1-128) for dummy driver. (array of int)
parm:           fake_buffer:Fake buffer allocations. (bool)
parm:           hrtimer:Use hrtimer as the timer source. (bool)

#aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
pulse
    PulseAudio Sound Server
dummy
default:CARD=Dummy
    Dummy, Dummy PCM
    Default Audio Device
sysdefault:CARD=Dummy
    Dummy, Dummy PCM
    Default Audio Device
dmix:CARD=Dummy,DEV=0
    Dummy, Dummy PCM
    Direct sample mixing device
dsnoop:CARD=Dummy,DEV=0
    Dummy, Dummy PCM
    Direct sample snooping device
hw:CARD=Dummy,DEV=0
    Dummy, Dummy PCM
    Direct hardware device without any conversions
plughw:CARD=Dummy,DEV=0
    Dummy, Dummy PCM
    Hardware device with all software conversions


# ffmpeg -f alsa  -i hw:0 -t 5  /dev/shm/out.mp3 -y
ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --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-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --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-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, alsa, from 'hw:0':
  Duration: N/A, start: 1616225206.353453, bitrate: 1536 kb/s
    Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s16le (native) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
Output #0, mp3, to '/dev/shm/out.mp3':
  Metadata:
    TSSE            : Lavf57.83.100
    Stream #0:0: Audio: mp3 (libmp3lame), 48000 Hz, stereo, s16p
    Metadata:
      encoder         : Lavc57.107.100 libmp3lame
size=      79kB time=00:00:05.01 bitrate= 129.0kbits/s speed=   1x     
video:0kB audio:79kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.293899%




  


  i use alsamixer to set all Volume to 0 ,and there is still noise
I searched in google for a long time and did not find other people have this problem , where am I doing it wrong