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• Cron job using database results

  9 mars 2013, par Fibericon

  I need help in creating a cron job script. Basically, I want to grab the next scheduled item and run it through ffmpeg to stream. This would be the mysql query (I'm using PHP variables to indicate what should go there - I don't actually know how variables work in cron jobs) :

  SELECT show.file FROM show, schedule
  
  WHERE channel = 1 AND start_time <= $current_time;

  This would be the ffmpeg command :

  ffmpeg -re -i $file http://127.0.0.1:8090/feed.ffm

  How would I create a cron job to execute these commands ?

• FFMPEG for Android toolchains : arm-linux-armeabi-eabi-pkg-config - is there any toolchain in existence containing the pkg-config tool

  27 août 2012, par user1545779

  Does anybody know any toolchain for ffmpeg linux arm platform which contains the arm-linux-androideabi-pkg-config tool ?

  The Android NDK does not contain it. Also has anybody succeeded in building ffmpeg for android that contains the alsa device ? Please note that libasound is present on my Ubuntu x86 PC.

  After very extensive research visiting forums including ffmpeg.org, ffmpeg—nabbles, groups.google.com including the andro and android-ndk gropus, and the Internet in general, I have not succeeded in finding anyone who seems to know of its existence. At best, I have read people saying ignore it. Considering what it is needed for, I consider that a naive thing to say.

  A careful review of the standard ffmpeg configure script shows that for certain input and output devices a toolchain described as pkg_config_default=pkg-config is required. Also all items on the HAVE_LIST are SYSTEM DEPENDENT. The configure script states very clearly what dependencies are required for each indev or outdev item. Apparently this tool is used then to verify the libraries which are needed for the dependencies

  This is what happens when you attempt to configure ffmpeg for android

  jasongipsyblues@android-master : /android-ffmpeg/Project/jni$ ./configure_ffmpeg.sh
  ...
  ...
  ..
  ....
  License : GPL version 3 or later
  Creating config.mak and config.h...

  config.h is unchanged

  config.asm is unchanged

  libavutil/avconfig.h is unchanged

  WARNING : /home/jasongipsyblues/Desktop/apps/android-ndk-r8b/toolchains/arm-linux-androideabi-
  4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-pkg-config not found, library detection may
  fail.

  On a PC with Ubuntu there is no issue with pkg-config.

  Please compare the following outputs when one greps for the in/out device alsa from the config.log files for an Ubuntu x86 PC and that for the android box using the android-ndk-r8 toolchain

  jasongipsyblues@android-master : /android-ffmpeg/Project/jni/ffmpeg$ cat config.log|grep >alsa
  alsa_indev
  alsa_outdev
  alsa_asoundlib_h
  INDEV_LIST='alsa_indev
  OUTDEV_LIST='alsa_outdev
  alsa_indev='yes'
  alsa_indev_deps='alsa_asoundlib_h snd_pcm_htimestamp'
  alsa_outdev='yes'
  alsa_outdev_deps='alsa_asoundlib_h'
  indevs_if_any='alsa_indev
  outdevs_if_any='alsa_outdev
  check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
  check_func_headers alsa/asoundlib.h snd_pcm_htimestamp -lasound
  1 #include
  /tmp/ffconf.VCjQQAHQ.c:1:28 : error : alsa/asoundlib.h : No such file or directory

  This is the compiler output showing the source of the error :
  

  check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
  check_func_headers alsa/asoundlib.h snd_pcm_htimestamp -lasound
  check_ld cc -lasound
  check_cc
  BEGIN /tmp/ffconf.VCjQQAHQ.c
  1 #include
  2 long check_snd_pcm_htimestamp(void) return (long) snd_pcm_htimestamp ;
  3 int main(void) return 0 ;
  END /tmp/ffconf.VCjQQAHQ.c
  /home/jasongipsyblues/Desktop/apps/android-ndk-r8b/toolchains/arm-linux-androideabi->4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-gcc —sysroot=/home/jasongipsyblues/Desktop/apps/android-ndk-r8b/platforms/android-14/arch-arm -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -DPIC -I../x264 -mcpu=cortex-a9 -std=c99 -fomit-frame-pointer -fPIC -marm -c -o /tmp/ffconf.I2B2AXfH.o
  /tmp/ffconf.VCjQQAHQ.c
  /tmp/ffconf.VCjQQAHQ.c:1:28 : error : alsa/asoundlib.h : No such file or directory
  /tmp/ffconf.VCjQQAHQ.c : In function 'check_snd_pcm_htimestamp' :
  /tmp/ffconf.VCjQQAHQ.c:2 : error : 'snd_pcm_htimestamp' undeclared (first use in this function)
  /tmp/ffconf.VCjQQAHQ.c:2 : error : (Each undeclared identifier is reported only once
  /tmp/ffconf.VCjQQAHQ.c:2 : error : for each function it appears in.)

  This is for the Ubuntu x86PC ffmpeg
  jasongipsyblues@android-master : /ffmpeg$ cat config.log|grep alsa
  alsa_indev
  alsa_outdev
  alsa_asoundlib_h
  INDEV_LIST='alsa_indev
  OUTDEV_LIST='alsa_outdev
  alsa_indev='yes'
  alsa_indev_deps='alsa_asoundlib_h snd_pcm_htimestamp'
  alsa_outdev='yes'
  alsa_outdev_deps='alsa_asoundlib_h'
  indevs_if_any='alsa_indev
  outdevs_if_any='alsa_outdev
  check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
  check_func_headers alsa/asoundlib.h snd_pcm_htimestamp -lasound
  1 #include
  There is no error here and alsa is successfully included in the ffmpeg build

• Anomalie #2963 : Flux RSS des révisions

  26 mars 2013, par Suske -

  http://zone.spip.org/trac/spip-zone/changeset/71094 améliore très sensiblement la chose. C’est http://spip.pastebin.fr/26839 avec mention de l’objet de son id et de la version dans le titre de l’item. Quelque chose vaut mieux qu’un flux vide mais donc, par rapport à avant, pour ce qu’on m’en dit : (...)