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• Add const to th_comment_* parameters.

  2 juin 2012, par Tim Terriberry

  Add const to th_comment_* parameters.
  There was never any reason for these to not be const, and it
  
   shouldn't break backwards API or ABI compatibility.
  git-svn-id : http://svn.xiph.org/trunk/theora@18348 0101bb08-14d6-0310-b084-bc0e0c8e3800
  

  • [DH] include/theora/codec.h
  • [DH] lib/info.c

• Android ffmpeg using

  6 juin 2012, par Vardan Gevorgyan

  I have successfully compiled ffmpeg for android.
  I have wrote simple application which just open mp4 file :

  int main(int argc, char * argv[]) 
  
  {
  
      av_register_all();
  
  
  
      __android_log_write(ANDROID_LOG_INFO, "NDK", "Opening file: /sdcard/test.mp4...");
  
  
  
      if (avformat_open_input(&pFormatCtx, "/sdcard/test.mp4", NULL, NULL) != 0) {
  
          __android_log_write(ANDROID_LOG_INFO, "NDK", "file not opened\n");
  
          return -1;
  
      }
  
      __android_log_write(ANDROID_LOG_INFO, "NDK", "file opened\n");
  
  }

  When I run this code the C code crashes here :

  06-06 18:22:42.629: I/DEBUG(31):          #00  pc 00159804  /data/data libffmpeg.so
  
  06-06 18:22:42.629: I/DEBUG(31):          #01  lr 809465dc  /data/data libffmpeg.so

  ndk-stack write :

  Stack frame #00  pc 00159804  /data/data/.../lib/libffmpeg.so: Routine av_opt_set_dict in libavutil/opt.c:552

  Which is av_opt_set_dict function :

  int av_opt_set_dict(void *obj, AVDictionary **options)
  
  {
  
      AVDictionaryEntry *t = NULL;
  
      AVDictionary    *tmp = NULL;
  
      int ret = 0;
  
  
  
      while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
  
          ret = av_set_string3(obj, t->key, t->value, 1, NULL);
  
          if (ret == AVERROR_OPTION_NOT_FOUND)
  
              av_dict_set(&tmp, t->key, t->value, 0);
  
          else if (ret < 0) {
  
              av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
  
              break;
  
          }
  
          ret = 0;
  
      }
  
      av_dict_free(options);
  
      *options = tmp;
  
      return ret;
  
  }

  552 line is :

  while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {

  This code working on my linux machine (of course with .so for linux, for android I use ndk built .so file), but not under android.

  Also, it's working on my rooted HTC Desire Z, but not on emulator or un-rooted device.

  Here I found the post that I need to change libavformat/file.c file_check function :

  static int file_check(URLContext *h, int mask)
  
  {
  
      struct stat st;
  
      int ret = stat(h->filename, &st);
  
      if (ret < 0)
  
          return AVERROR(errno);
  
  
  
      ret |= st.st_mode&S_IRUSR ? mask&AVIO_FLAG_READ  : 0;
  
      ret |= st.st_mode&S_IWUSR ? mask&AVIO_FLAG_WRITE : 0;
  
  
  
      return ret;
  
  }

  to

  static int file_check(URLContext *h, int mask)
  
  {
  
      struct stat st;
  
      int ret = stat(h->filename, &st);
  
      if (ret < 0)
  
          return AVERROR(errno);
  
  
  
      ret |= st.st_mode&S_IRUSR ? mask&AVIO_FLAG_READ  : 0;
  
      ret |= st.st_mode&S_IRGRP ? mask&AVIO_FLAG_READ  : 0;
  
      ret |= st.st_mode&S_IROTH ? mask&AVIO_FLAG_READ  : 0;
  
      ret |= st.st_mode&S_IWUSR ? mask&AVIO_FLAG_WRITE : 0;
  
      ret |= st.st_mode&S_IWGRP ? mask&AVIO_FLAG_WRITE  : 0;
  
      ret |= st.st_mode&S_IWOTH ? mask&AVIO_FLAG_WRITE  : 0;
  
  
  
  
  
      return ret;
  
  }

  but it wasn't help.

  Any suggestions ?

  Thanks

• Store converted video in a buffer to transfer to S3

  24 mai 2012, par Chris

  I have a system set up to upload an image, take that temporarily uploaded file, convert it to a resized jpeg, read the buffer of that conversion and send the buffer to amazon S3 for storage as an image. It works wonderfully because no permanent file is stored on the my server, everything is on S3.

  Now I am attempting to add this same functionality but with video. The process goes through, but the resulting files stored on Amazons S3 servers are 1.5kb a piece, instead of multimb videos.

  My code is as follows :

  public function transfer($method, $file, $bucketName, $filename, $contentType){
  
      switch($method){
  
          case 'file':
  
              if($this->s3->putObject($this->s3->inputFile($file, false), $bucketName, $filename, S3::ACL_PUBLIC_READ, array(), $contentType))
  
                  return true;
  
              else
  
                  return false;
  
              break;
  
          case 'string':
  
              if ($this->s3->putObject($file, $bucketName, $filename, S3::ACL_PUBLIC_READ, array(), $contentType))
  
                  return true;
  
              else
  
                  return false;
  
              break;
  
          case 'resource':
  
              if($this->s3->putObject($this->s3->inputResource(fopen($file, 'rb'), filesize($file)), $bucketName, $filename, S3::ACL_PUBLIC_READ, array(), $contentType))
  
                  return true;
  
              else
  
                  return false;
  
              break;
  
      }
  
      return false;
  
  }   
  
  
  
  
  
  /**
  
  *   AmazonS3Handler - convert()
  
  */
  
  
  
  public function convert($file, $type)
  
  {
  
           $ffmpeg = "/usr/bin/ffmpeg";
  
      $cmd['webm'] = $ffmpeg. " -i ". $file ." -vcodec libvpx -acodec libvorbis -ac 2 -f webm -g 30 2>&1";
  
      $cmd['ogv'] = $ffmpeg. " -i ". $file ." -vcodec libtheora -acodec libvorbis -ac 2 2>&1";
  
      $cmd['mp4'] = $ffmpeg. " -i ". $file ." -vcodec libx264 -acodec libfaac -ac 2 2>&1";
  
      $cmd['jpg'] = $ffmpeg. " -i ". $file ." -vframes 30";
  
  
  
      ob_start();
  
      passthru($cmd[$type]);
  
      $fileContents = ob_get_contents();
  
      ob_end_clean();
  
      return $fileContents;
  
  }

  From my understanding, passthru should return raw output which could be picked up by the output buffer.

  Am I doing something wrong ? Is there a better way to convert a video on my servers but keep the data on S3 ?

  Thanks !

  EDIT : I've boiled it down to the executing of the command. FFMPEG wasn't being located, so I changed the path to "/usr/bin/ffmpeg", no more error 127, now when I run exec() (not passthru) I get error 1

  EDIT2 : Here is the output of running the script :

  Array
  
  (
  
  [0] => ffmpeg version 0.7.3-4:0.7.3-0ubuntu0.11.10.1, Copyright (c) 2000-2011 the Libav developers
  
  [1] =>   built on Jan  4 2012 16:08:51 with gcc 4.6.1
  
  [2] =>   configuration: --extra-version='4:0.7.3-0ubuntu0.11.10.1' --arch=amd64 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
  
  [3] =>   libavutil    51.  7. 0 / 51.  7. 0
  
  [4] =>   libavcodec   53.  6. 0 / 53.  6. 0
  
  [5] =>   libavformat  53.  3. 0 / 53.  3. 0
  
  [6] =>   libavdevice  53.  0. 0 / 53.  0. 0
  
  [7] =>   libavfilter   2.  4. 0 /  2.  4. 0
  
  [8] =>   libswscale    2.  0. 0 /  2.  0. 0
  
  [9] =>   libpostproc  52.  0. 0 / 52.  0. 0
  
  [10] => 
  
  [11] => Seems stream 1 codec frame rate differs from container frame rate: 2000.00 (2000/1) -> 30.30 (1000/33)
  
  [12] => Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'iv.m4v':
  
  [13] =>   Metadata:
  
  [14] =>     major_brand     : M4V
  
  [15] =>     minor_version   : 1
  
  [16] =>     compatible_brands: M4V M4A mp42isom
  
  [17] =>     creation_time   : 2012-01-23 04:00:18
  
  [18] =>     encoder         : Mac OS X v10.7.2 (CMA 889, CM 705.42, x86_64)
  
  [19] =>   Duration: 00:00:11.70, start: 0.000000, bitrate: 345 kb/s
  
  [20] =>     Stream #0.0(und): Audio: aac, 44100 Hz, stereo, s16, 125 kb/s
  
  [21] =>     Metadata:
  
  [22] =>       creation_time   : 2012-01-23 04:00:18
  
  [23] =>     Stream #0.1(und): Video: h264 (Main), yuv420p, 640x360 [PAR 1:1 DAR 16:9], 206 kb/s, 30.30 fps, 30.30 tbr, 1k tbn, 2k tbc
  
  [24] =>     Metadata:
  
  [25] =>       creation_time   : 2012-01-23 04:00:18
  
  [26] => iv.webm: Permission denied
  
  )

  It looks like the permissions aren't set right, however the file has chmod 777 permissions. What other permissions need to get changed ?