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• C program cannot find function which included in header file

  17 juin 2013, par Juneyoung Oh

  I made program like this.

    1 #include 
  
    2 #include 
  
    3 #include 
  
    4 #include "libavformat/avformat.h"
  
    5 
  
    6 int main (int argc, char* argv[]){
  
    7         av_register_all();
  
    8         return 0;
  
    9 }

  My header file located in

  root@ubuntu:/home/juneyoungoh/getDuration# find / -name "avformat.h"
  
  /root/ffmpeg/libavformat/avformat.h
  
  /usr/local/include/libavformat/avformat.h

  then I run with gcc getDuration.c , but I show message like below.

  root@ubuntu:/home/juneyoungoh/getDuration# gcc getDuration.c 
  
  /tmp/ccwjonqH.o: In function `main':
  
  getDuration.c:(.text+0x10): undefined reference to `av_register_all'
  
  collect2: ld returned 1 exit status

  Frankly, I do not have any idea what makes this.

  Thanks for your answers.

  ========================== edited #1 ===========================

  when I "ls /usr/local/lib", I get this.

  root@ubuntu:/home/juneyoungoh/getDuration# ls /usr/local/lib/
  
  libavcodec.a   libavutil.a    libopus.la       libvpx.a   python2.7
  
  libavdevice.a  libfdk-aac.a   libpostproc.a    libx264.a
  
  libavfilter.a  libfdk-aac.la  libswresample.a  libyasm.a
  
  libavformat.a  libopus.a      libswscale.a     pkgconfig

  you can see libavformat.a in the very first of the last line.

  so if I command like what you suggest, I get below.

  /root/ffmpeg/libavformat/vqf.c:244: undefined reference to `av_free_packet'
  
  /usr/local/lib//libavformat.a(vqf.o): In function `add_metadata':
  
  /root/ffmpeg/libavformat/vqf.c:58: undefined reference to `av_malloc'
  
  /root/ffmpeg/libavformat/vqf.c:64: undefined reference to `av_dict_set'
  
  /usr/local/lib//libavformat.a(vqf.o): In function `vqf_read_header':
  
  /root/ffmpeg/libavformat/vqf.c:148: undefined reference to `av_dict_set'
  
  /root/ffmpeg/libavformat/vqf.c:208: undefined reference to `av_log'
  
  /root/ffmpeg/libavformat/vqf.c:216: undefined reference to `av_malloc'
  
  /root/ffmpeg/libavformat/vqf.c:170: undefined reference to `av_log'
  
  /root/ffmpeg/libavformat/vqf.c:121: undefined reference to `av_log'
  
  /root/ffmpeg/libavformat/vqf.c:184: undefined reference to `av_log'
  
  /root/ffmpeg/libavformat/vqf.c:136: undefined reference to `av_log'
  
  /usr/local/lib//libavformat.a(wavenc.o): In function `wav_write_trailer':
  
  /root/ffmpeg/libavformat/wavenc.c:210: undefined reference to `av_rescale'
  
  /usr/local/lib//libavformat.a(wavenc.o): In function `wav_write_packet':
  
  /root/ffmpeg/libavformat/wavenc.c:181: undefined reference to `av_log'

  It is too long, so I just post little part of that.

  I think all link of libavformat has been broken, But I do not know

  what can I do to fix that link.

  I have installed that their official link said.

  https://ffmpeg.org/trac/ffmpeg/wiki/UbuntuCompilationGuideQuantal

• Copying GoPro metadata with ffmpeg - Could not find tag for codec none

  12 juin 2024, par TomMaier

  I am trying to use ffmpeg to copy the metadata of a gopro file.
The most basic demonstration of the problem would be to copy everything to a new file :

  


  ffmpeg -y -i source.MP4 -c copy -copy_unknown -map 0:v -map 0:a -map 0:2 -map 0:3 -map 0:4 -map_metadata 0 result.MP4


  


  This produces the error :

  


  Could not find tag for codec none in stream #2, codec not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:4 --


  


  As I understand it this means that ffmpeg doesn't apply the -c copy operation correctly and instead complains that there is no encoder for the data streams. The same error happens for 0:2 and 0:4

  


  While searching on google if have found some people who have had the same issue in the past but I have also found some reports of it working.

  


  Any ideas what am I doing wrong or is this actually a bug ?

  


  Here is the ffprobe and the link to the GoPro file.

  


  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'source.MP4':
  Metadata:
    major_brand     : mp41
    minor_version   : 538120216
    compatible_brands: mp41
    creation_time   : 2021-05-17T22:36:48.000000Z
    firmware        : HD7.01.01.90.00
  Duration: 00:00:02.88, start: 0.000000, bitrate: 58664 kb/s
  Stream #0:0(eng): Video: hevc (Main) (hvc1 / 0x31637668), yuvj420p(pc, bt709), 2704x1520 [SAR 1:1 DAR 169:95], 58557 kb/s, 59.94 fps, 59.94 tbr, 60k tbn, 59.94 tbc (default)
    Metadata:
      creation_time   : 2021-05-17T22:36:48.000000Z
      handler_name    : GoPro H.265
      vendor_id       : [0][0][0][0]
      encoder         : GoPro H.265 encoder
      timecode        : 02:43:36:15
  Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 187 kb/s (default)
    Metadata:
      creation_time   : 2021-05-17T22:36:48.000000Z
      handler_name    : GoPro AAC
      vendor_id       : [0][0][0][0]
      timecode        : 02:43:36:15
  Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
    Metadata:
      creation_time   : 2021-05-17T22:36:48.000000Z
      handler_name    : GoPro TCD
      timecode        : 02:43:36:15
  Stream #0:3(eng): Data: bin_data (gpmd / 0x646D7067), 30 kb/s (default)
    Metadata:
      creation_time   : 2021-05-17T22:36:48.000000Z
      handler_name    : GoPro MET
  Stream #0:4(eng): Data: none (fdsc / 0x63736466), 16 kb/s (default)
    Metadata:
      creation_time   : 2021-05-17T22:36:48.000000Z
      handler_name    : GoPro SOS
Unsupported codec with id 0 for input stream 2
Unsupported codec with id 100359 for input stream 3
Unsupported codec with id 0 for input stream 4


  


• AWS elastic beanstalk UnhandledPromiseRejectionWarning : Cannot find ffprobe

  1er janvier 2021, par Ali Ahmed

  Using elasticbeanstalk with Node.js 10 running on 64bit Amazon Linux 2/5.2.3. I have a packages.config file under .ebextensions folder.

  


     packages:
  yum:
    ImageMagick: []
    ImageMagick-devel: []
commands:
  01-wget:
    command: "wget -O /tmp/ffmpeg.tar.xz http://ffmpeg.org/releases/ffmpeg-4.1.tar.gz"
  02-mkdir:
    command: "if [ ! -d /opt/ffmpeg ] ; then mkdir -p /opt/ffmpeg; fi"
  03-tar:
    command: "tar xvf /tmp/ffmpeg.tar.xz -C /opt/ffmpeg"
  04-ln:
    command: "if [[ ! -f /usr/bin/ffmpeg ]] ; then ln -sf /opt/ffmpeg/ffmpeg-4.1/ffmpeg /usr/bin/ffmpeg; fi"
  05-ln:
    command: "if [[ ! -f /usr/bin/ffprobe ]] ; then ln -sf /opt/ffmpeg/ffmpeg-4.1/ffprobe /usr/bin/ffprobe; fi"
  06-pecl:
    command: "if [ `pecl list | grep imagick` ] ; then pecl install -f imagick; fi"


  


  I am using fluent-ffmpeg@2.1.2 module for saving screenshot.