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• Heroku ffmpeg buildpack

  20 octobre 2015, par Manuel Quintanilla

  Putting together the video upload section in my rails app and am having some issues with video play on mobile phones. Im using

  paperclip-av-transcoder, s3 and  Heroku

  On my laptop I can visit the page and see the video thumbnails and play the videos only because I have previously installed ffmpeg to my machine.

  Remotely on Heroku I’ve set the appropriate buildpacks for ffmpeg and have run push heroku master to install the buildpacks - Now when I visit the page on my mobile iPhone I don’t get a thumbnail but when I play the video it plays - on the other hand when I visit the page on my Android phone I don’t get a thumbnail and the video dose not play but I can upload mp4s on Android.

  Check out my set up here : Heroku ffmpeg buildpacks for video uploads

  It seems I don’t have the proper buildpack setup or some other heroku setting with ffmpeg.

  Any suggestions ? Thanks in advance !

• How to record a livestream in ffmpeg or gstreamer and split the files without skipping or duplicating frames

  15 décembre 2020, par Blake Cochrane

  Can somone please recommend a solution for safely recording a live stream to a file that would not produce a corrupted file if the system was unsavely shut down.

  


  I am starting on a project using a battery powered Raspberry Pi 4B.
I am using GStreamer to use the ASIC for Raw Pi camera to h.264 compression to create a RTSP/HLS/RTMP stream.
I need to continuosly record the livestream to a file on the Pi without any duplicate & missing frames or transcoding - eg using -vcodec copy.
As the Pi is battery powered, it can be unsafely shut down randomly when the battery is out of energy.
I know that if a mp4 container isn't 'finalised' with the moov atom before the file finishes writing which would leave the file corrupted/unrepairable and unplayable.
So if I have an mp4 recording of 6 hours that is corrupted and unfixable that is a problem.
My idea was to split the recording to a new file after x amount of minutes or frames or bytes as losing the last few minutes is not so bad as to lose hours of recordings.
I would need to set the last frame in the old file as the previous frame to the next I frame (starting frame) in the new file as a h.264 stream can only start on an I frame.

  


  So it would go like this.
file 1
| Frame |0001|I|
| --- | --- | --- |
|Frame|0002|P|
|Frame|0003|B|
...
| Frame |1524|B|
| --- | --- | --- |
| Frame |1525|P|

  


  file 2
| Frame |1526|I|
| --- | --- | --- |
| Frame |1527|B|

  


  Then all of the split files can be appended to each other without transcoding in ffmpeg.
I don't need to record the live stream directly to an mp4, whatever container it is in can be converted to an mp4 when appending the split files.

  


  There is a python script of the Raspberry pi that accomplishes all of this but it can not be used for a live stream multicast as the Pi camera can not be accessed by more than one process at a time.
Unless there is a way to live stream the latest frames in an mp4 file that is continiously being recorded to, I am stuck.

  


• error while install FFMPEG-PHP

  30 juillet 2016, par Box Lyrics

  I’m trying to install FFmpeg and FFMPEG-PHP .
  The installation of FFmpeg is success but when i try to install FFMPEG-PHP i get this error

      # make
  
  /bin/sh /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/libtool --mode=compile cc  -I. -I/root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php -DPHP_ATOM_INC -I/root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/include -I/root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/main -I/root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php -I/usr/include/php -I/usr/include/php/main -I/usr/include/php/TSRM -I/usr/include/php/Zend -I/usr/include/php/ext -I/usr/include/php/ext/date/lib  -DHAVE_CONFIG_H  -g -O2   -c /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c -o ffmpeg_movie.lo
  
  libtool: compile:  cc -I. -I/root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php -DPHP_ATOM_INC -I/root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/include -I/root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/main -I/root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php -I/usr/include/php -I/usr/include/php/main -I/usr/include/php/TSRM -I/usr/include/php/Zend -I/usr/include/php/ext -I/usr/include/php/ext/date/lib -DHAVE_CONFIG_H -g -O2 -c /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c  -fPIC -DPIC -o .libs/ffmpeg_movie.o
  
  /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c:42:32: error: libavcodec/version.h: No such file or directory
  
  /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c:76:1: warning: "MAX_STREAMS" redefined
  
  In file included from /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c:43:
  
  /usr/include/libavformat/avformat.h:569:1: warning: this is the location of the previous definition
  
  /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c: In function ‘php_get_dict_value’:
  
  /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c:509: error: ‘AVDictionaryEntry’ undeclared (first use in this function)
  
  /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c:509: error: (Each undeclared identifier is reported only once
  
  /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c:509: error: for each function it appears in.)
  
  /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c:509: error: ‘m_entry’ undeclared (first use in this function)
  
  /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c: In function ‘zim_ffmpeg_movie_getPixelFormat’:
  
  /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c:828: warning: assignment makes pointer from integer without a cast
  
  /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c: In function ‘_php_get_codec_name’:
  
  /root/ffmpeg_sources/ffmpeg-php-0.6.0/ffmpeg-php/ffmpeg_movie.c:918: error:                          ‘AV_CODEC_ID_MPEG2TS’ undeclared (first use in this function)
  
  make: *** [ffmpeg_movie.lo] Error 1

  this is what i have execute

  #  git clone https://github.com/tony2001/ffmpeg-php.git
  
  #  cd ffmpeg-php
  
  #  make clean
  
  #  phpize 
  
  #  ./configure 
  
  #  make

  when i search for a solution i found this :
  If you get an error message like make : *** [ffmpeg_movie.lo] Error 1 open the ffmpeg_movie.c file and make the following changes :

  user@myVPS:~# vim ffmpeg_movie.c

  Change list_entry *le ; to zend_rsrc_list_entry *le ;
  Change list_entry new_le ; to zend_rsrc_list_entry new_le ;
  Change hashkey_length+1, (void *)&new_le, sizeof(list_entry), to hashkey_length+1, (void *)&new_le,sizeof(zend_rsrc_list_entry),

  but when i check the ffmpeg_movie.c i found that is already fixed with this changes.
  I can’t find the probleme