Recherche avancée

Sur d’autres sites (3989)

• Video Conversion to have Play Speed

  24 juin 2014, par Taufiq

  There is a open source Media Player Component called Media Kit (https://wpfmediakit.codeplex.com/). It supports Play Speed. But its dependent on video format.

  I have generated a video using SharpAvi (http://sharpavi.codeplex.com/) sample project, using Motion Jepg Encoder.

  This video does not have Play Speed support for some reason. Details Below from ffmpeg

  Video: mjpeg (MJPG / 0x47504A4D), yuvj420p(pc), 1920x1080 [SAR 96:96 DAR 16:9], 9818 kb/s, 10 fps, 10 tbr, 10 tbn, 10 tbc

  Next I download an flv video from Youtube and Media Kit’s play speed works fine with this video.

  Video: flv1, yuv420p, 426x240, 259 kb/s, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc

  Now I converted them into common MP4 format using ffmepg

  ffmpeg -i "1.avi" -ar 22050 -b 2048k "1.mp4"
  
  ffmpeg -i "2.flv" -ar 22050 -b 2048k "2.mp4"

  Results

  1.mp4

   Video: h264 (High) (avc1 / 0x31637661), yuv420p, 426x240, 1235 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)

  2.mp4

  Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920 x1080 [SAR 1:1 DAR 16:9], 158 kb/s, 10 fps, 10 tbr, 10240 tbn, 20 tbc (default)

  The thing is the converted video from flv file still supports play speed where else the converted mp4 from the Avi does not. What is that I am missing

  More Details Below.

  AVI File

  ffmpeg -i "1.avi" ffmpeg version N-64167-gca35037 Copyright (c) 2000-2014 the FFmpeg developers   built on Jun 22 2014 22:02:17 with gcc 4.8.3 (GCC)   configuration:
  
  --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab -
  
  -enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
  
  --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-decklink --enable-zlib   libavutil      52. 90.100 / 52. 90.100   libavcodec     55. 68.100 /
  
  55. 68.100   libavformat    55. 44.100 / 55. 44.100   libavdevice    55. 13.101 / 55. 13.101   libavfilter     4.  9.100 /  4.  9.100   libswscale      2.  6.100 /  2.  6.100   libswresample   0. 19.100 / 
  
  0. 19.100   libpostproc    52.  3.100 / 52.  3.100 [avi @ 028fe560] non-interleaved AVI Input #0, avi, from '1.avi':   Duration: 00:00:37.50, start: 0.000000, bitrate: 9794 kb/s
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj420p(pc), 1920x1080 [SAR 96:96 DAR 16:9], 9818 kb/s, 10 fps, 10 tbr, 10 tbn, 10 tbc
  
      Metadata:
  
        title           : Screencast At least one output file must be specified

  fLV File

  ffmpeg -i "2.flv" ffmpeg version N-64167-gca35037 Copyright (c) 2000-2014 the FFmpeg developers   built on Jun 22 2014 22:02:17 with gcc 4.8.3 (GCC)   configuration:
  
  --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab -
  
  -enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
  
  --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-decklink --enable-zlib   libavutil      52. 90.100 / 52. 90.100   libavcodec     55. 68.100 /
  
  55. 68.100   libavformat    55. 44.100 / 55. 44.100   libavdevice    55. 13.101 / 55. 13.101   libavfilter     4.  9.100 /  4.  9.100   libswscale      2.  6.100 /  2.  6.100   libswresample   0. 19.100 / 
  
  0. 19.100   libpostproc    52.  3.100 / 52.  3.100 [flv @ 02b8e560] Stream discovered after head already parsed Input #0, flv, from '2.flv':   Metadata:
  
      starttime       : 0
  
      totalduration   : 85
  
      totaldatarate   : 325
  
      bytelength      : 3438869
  
      canseekontime   : true
  
      sourcedata      : B4A7DA902MM1403531086617082
  
      purl            :
  
      pmsg            :   Duration: 00:01:24.63, start: 0.000000, bitrate: 325 kb/s
  
      Stream #0:0: Video: flv1, yuv420p, 426x240, 259 kb/s, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc
  
      Stream #0:1: Audio: mp3, 22050 Hz, stereo, s16p, 65 kb/s
  
      Stream #0:2: Data: none At least one output file must be specified

  AVI to MP4

  ffmpeg -i "1.mp4" ffmpeg version N-64167-gca35037 Copyright (c) 2000-2014 the FFmpeg developers   built on Jun 22 2014 22:02:17 with gcc 4.8.3 (GCC)   configuration:
  
  --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab -
  
  -enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
  
  --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-decklink --enable-zlib   libavutil      52. 90.100 / 52. 90.100   libavcodec     55. 68.100 /
  
  55. 68.100   libavformat    55. 44.100 / 55. 44.100   libavdevice    55. 13.101 / 55. 13.101   libavfilter     4.  9.100 /  4.  9.100   libswscale      2.  6.100 /  2.  6.100   libswresample   0. 19.100 / 
  
  0. 19.100   libpostproc    52.  3.100 / 52.  3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4':   Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.44.100   Duration: 00:00:37.50, start: 0.000000, bitrate: 159 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920 x1080 [SAR 1:1 DAR 16:9], 158 kb/s, 10 fps, 10 tbr, 10240 tbn, 20 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler At least one output file must be specified

  FLV to MP4

  ffmpeg -i "2.mp4" ffmpeg version N-64167-gca35037 Copyright (c) 2000-2014 the FFmpeg developers   built on Jun 22 2014 22:02:17 with gcc 4.8.3 (GCC)   configuration:
  
  --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab -
  
  -enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
  
  --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-decklink --enable-zlib   libavutil      52. 90.100 / 52. 90.100   libavcodec     55. 68.100 /
  
  55. 68.100   libavformat    55. 44.100 / 55. 44.100   libavdevice    55. 13.101 / 55. 13.101   libavfilter     4.  9.100 /  4.  9.100   libswscale      2.  6.100 /  2.  6.100   libswresample   0. 19.100 / 
  
  0. 19.100   libpostproc    52.  3.100 / 52.  3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2.mp4':   Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.44.100   Duration: 00:01:24.81, start: 0.072562, bitrate: 1365 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 426x240, 1235 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 12 8 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler At least one output file must be specified

• Reverse Engineering Italian Literature

  1er juillet 2014, par Multimedia Mike — Reverse Engineering

  Some time ago, Diego “Flameeyes” Pettenò tried his hand at reverse engineering a set of really old CD-ROMs containing even older Italian literature. The goal of this RE endeavor would be to extract the useful literature along with any structural metadata (chapters, etc.) and convert it to a more open format suitable for publication at, e.g., Project Gutenberg or Archive.org.

  Unfortunately, the structure of the data thwarted the more simplistic analysis attempts (like inspecting for blocks of textual data). This will require deeper RE techniques. Further frustrating the effort, however, is the fact that the binaries that implement the reading program are written for the now-archaic Windows 3.1 operating system.

  In pursuit of this RE goal, I recently thought of a way to glean more intelligence using DOSBox.

  Prior Work
  There are 6 discs in the full set (distributed along with 6 sequential issues of a print magazine named L’Espresso). Analysis of the contents of the various discs reveals that many of the files are the same on each disc. It was straightforward to identify the set of files which are unique on each disc. This set of files all end with the extension “LZn”, where n = 1..6 depending on the disc number. Further, the root directory of each disc has a file indicating the sequence number (1..6) of the CD. Obviously, these are the interesting targets.

  The LZ file extensions stand out to an individual skilled in the art of compression– could it be a variation of the venerable LZ compression ? That’s actually unlikely because LZ — also seen as LIZ — stands for Letteratura Italiana Zanichelli (Zanichelli’s Italian Literature).

  The Unix ‘file’ command was of limited utility, unable to plausibly identify any of the files.

  Progress was stalled.

  Saying Hello To An Old Frenemy
  I have been showing this screenshot to younger coworkers to see if any of them recognize it :

  
  
  

  Not a single one has seen it before. Senior computer citizen status : Confirmed.

  I recently watched an Ancient DOS Games video about Windows 3.1 games. This episode showed Windows 3.1 running under DOSBox. I had heard this was possible but that it took a little work to get running. I had a hunch that someone else had probably already done the hard stuff so I took to the BitTorrent networks and quickly found a download that had the goods ready to go– a directory of Windows 3.1 files that just had to be dropped into a DOSBox directory and they would be ready to run.

  Aside : Running OS software procured from a BitTorrent network ? Isn’t that an insane security nightmare ? I’m not too worried since it effectively runs under a sandboxed virtual machine, courtesy of DOSBox. I suppose there’s the risk of trojan’d OS software infecting binaries that eventually leave the sandbox.

  Using DOSBox Like ‘strace’
  strace is a tool available on some Unix systems, including Linux, which is able to monitor the system calls that a program makes. In reverse engineering contexts, it can be useful to monitor an opaque, binary program to see the names of the files it opens and how many bytes it reads, and from which locations. I have written examples of this before (wow, almost 10 years ago to the day ; now I feel old for the second time in this post).

  Here’s the pitch : Make DOSBox perform as strace in order to serve as a platform for reverse engineering Windows 3.1 applications. I formed a mental model about how DOSBox operates — abstracted file system classes with methods for opening and reading files — and then jumped into the source code. Sure enough, the code was exactly as I suspected and a few strategic print statements gave me the data I was looking for.

  Eventually, I even took to running DOSBox under the GNU Debugger (GDB). This hasn’t proven especially useful yet, but it has led to an absurd level of nesting :

  
  
  

  The target application runs under Windows 3.1, which is running under DOSBox, which is running under GDB. This led to a crazy situation in which DOSBox had the mouse focus when a GDB breakpoint was triggered. At this point, DOSBox had all desktop input focus and couldn’t surrender it because it wasn’t running. I had no way to interact with the Linux desktop and had to reboot the computer. The next time, I took care to only use the keyboard to navigate the application and trigger the breakpoint and not allow DOSBox to consume the mouse focus.

  New Intelligence
  
  By instrumenting the local file class (virtual HD files) and the ISO file class (CD-ROM files), I was able to watch which programs and dynamic libraries are loaded and which data files the code cares about. I was able to narrow down the fact that the most interesting programs are called LEGGENDO.EXE (‘reading’) and LEGGENDA.EXE (‘legend’ ; this has been a great Italian lesson as well as RE puzzle). The first calls the latter, which displays this view of the data we are trying to get at :

  
  
  

  When first run, the program takes an interest in a file called DBBIBLIO (‘database library’, I suspect) :

  === Read(’LIZ98\DBBIBLIO.LZ1’) : req 337 bytes ; read 337 bytes from pos 0x0
  === Read(’LIZ98\DBBIBLIO.LZ1’) : req 337 bytes ; read 337 bytes from pos 0x151
  === Read(’LIZ98\DBBIBLIO.LZ1’) : req 337 bytes ; read 337 bytes from pos 0x2A2
  [...]
  

  While we were unable to sort out all of the data files in our cursory investigation, a few things were obvious. The structure of this file looked to contain 336-byte records. Turns out I was off by 1– the records are actually 337 bytes each. The count of records read from disc is equal to the number of items shown in the UI.

  Next, the program is interested in a few more files :

  *** isoFile() : ’DEPOSITO\BLOKCTC.LZ1’, offset 0x27D6000, 2911488 bytes large
  === Read(’DEPOSITO\BLOKCTC.LZ1’) : req 96 bytes ; read 96 bytes from pos 0x0
  *** isoFile() : ’DEPOSITO\BLOKCTX0.LZ1’, offset 0x2A9D000, 17152 bytes large
  === Read(’DEPOSITO\BLOKCTX0.LZ1’) : req 128 bytes ; read 128 bytes from pos 0x0
  === Seek(’DEPOSITO\BLOKCTX0.LZ1’) : seek 384 (0x180) bytes, type 0
  === Read(’DEPOSITO\BLOKCTX0.LZ1’) : req 256 bytes ; read 256 bytes from pos 0x180
  === Seek(’DEPOSITO\BLOKCTC.LZ1’) : seek 1152 (0x480) bytes, type 0
  === Read(’DEPOSITO\BLOKCTC.LZ1’) : req 32 bytes ; read 32 bytes from pos 0x480
  === Read(’DEPOSITO\BLOKCTC.LZ1’) : req 1504 bytes ; read 1504 bytes from pos 0x4A0
  [...]

  Eventually, it becomes obvious that BLOKCTC has the juicy meat. There are 32-byte records followed by variable-length encoded text sections. Since there is no text to be found in these files, the text is either compressed, encrypted, or both. Some rough counting (the program seems to disable copy/paste, which thwarts more precise counting), indicates that the text size is larger than the data chunks being read from disc, so compression seems likely. Encryption isn’t out of the question (especially since the program deems it necessary to disable copy and pasting of this public domain literary data), and if it’s in use, that means the key is being read from one of these files.

  Blocked On Disassembly
  So I’m a bit blocked right now. I know exactly where the data lives, but it’s clear that I need to reverse engineer some binary code. The big problem is that I have no idea how to disassemble Windows 3.1 binaries. These are NE-type executable files. Disassemblers abound for MZ files (MS-DOS executables) and PE files (executables for Windows 95 and beyond). NE files get no respect. It’s difficult (but not impossible) to even find data about the format anymore, and details are incomplete. It should be noted, however, the DOSBox-as-strace method described here lends insight into how Windows 3.1 processes NE-type EXEs. You can’t get any more authoritative than that.

  So far, I have tried the freeware version of IDA Pro. Unfortunately, I haven’t been able to get the program to work on my Windows machine for a long time. Even if I could, I can’t find any evidence that it actually supports NE files (the free version specifically mentions MZ and PE, but does not mention NE or LE).

  I found an old copy of Borland’s beloved Turbo Assembler and Debugger package. It has Turbo Debugger for Windows, both regular and 32-bit versions. Unfortunately, the normal version just hangs Windows 3.1 in DOSBox. The 32-bit Turbo Debugger loads just fine but can’t load the NE file.

  I’ve also wondered if DOSBox contains any advanced features for trapping program execution and disassembling. I haven’t looked too deeply into this yet.

  Future Work
  NE files seem to be the executable format that time forgot. I have a crazy brainstorm about repacking NE files as MZ executables so that they could be taken apart with an MZ disassembler. But this will take some experimenting.

  If anyone else has any ideas about ripping open these binaries, I would appreciate hearing them.

  And I guess I shouldn’t be too surprised to learn that all the literature in this corpus is already freely available and easily downloadable anyway. But you shouldn’t be too surprised if that doesn’t discourage me from trying to crack the format that’s keeping this particular copy of the data locked up.

• Android ExoPlayer stream mp3 over HTTP

  8 juillet 2016, par kevintcoughlin

  I’m trying to get a grasp on the new ExoPlayer library introduced this year at Google I/O 2014 so that I can incorporate it into my application.

  I’m attempting to stream an mp3 over HTTP, but so far have been unsuccessful. I’m not sure if it’s possible, but I’m trying to accomplish this without extending any of the base Source/Sample classes. My code is as follows :

  In my Activity

  SampleSource s = new FrameworkSampleSource(this, Uri.parse("http://traffic.libsyn.com/joeroganexp/p518.mp3"), null, 1);
  
  
  
  // Since I only have 1 audio renderer
  
  ExoPlayer player = ExoPlayer.Factory.newInstance(1);
  
  
  
  MediaCodecAudioTrackRenderer audioRenderer = new MediaCodecAudioTrackRenderer(s);
  
  player.prepare(audioRenderer);
  
  player.setPlayWhenReady(true);

  Logcat

  3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ SniffFFMPEG
  
  07-06 15:52:34.080    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ android-source:0xb7c53e00
  
  07-06 15:52:34.084    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android source begin open
  
  07-06 15:52:34.084    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android open, url: android-source:0xb7c53e00
  
  07-06 15:52:34.084    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ ffmpeg open android data source success, source ptr: 0xb7c53e00
  
  07-06 15:52:34.088    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android source open success
  
  07-06 15:52:34.108    3363-3363/com.kevintcoughlin.smodr W/EGL_genymotion﹕ eglSurfaceAttrib not implemented
  
  07-06 15:52:34.116    3363-3363/com.kevintcoughlin.smodr E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from GradienCache
  
  07-06 15:52:34.120    3363-3363/com.kevintcoughlin.smodr E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 16384
  
  07-06 15:52:34.128    3363-3363/com.kevintcoughlin.smodr E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
  
  07-06 15:52:34.128    3363-3363/com.kevintcoughlin.smodr E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 16384
  
  07-06 15:52:34.128    3363-3363/com.kevintcoughlin.smodr D/OpenGLRenderer﹕ Enabling debug mode 0
  
  07-06 15:52:34.640    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ [mp3 @ 0xb7c57040] Estimating duration from bitrate, this may be inaccurate
  
  07-06 15:52:34.640    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Input #0, mp3, from 'android-source:0xb7c53e00':
  
  07-06 15:52:34.640    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Metadata:
  
  07-06 15:52:34.640    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ TSS             : Logic Pro 9.1.8
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ title           : #518 - Matt Fulchiron
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ artist          : Joe Rogan Experience
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ album_artist    : Joe Rogan Experience
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Duration: 02:57:10.21, start: 0.000000, bitrate: 127 kb/s
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ FFmpegExtrator, url: android-source:0xb7c53e00, format_name: mp3, format_long_name: MP2/3 (MPEG audio layer 2/3)
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ list the formats suppoted by ffmpeg:
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ ========================================
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[00]: mpeg
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[01]: mpegts
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[02]: mov,mp4,m4a,3gp,3g2,mj2
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[03]: matroska,webm
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[04]: asf
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[05]: rm
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[06]: flv
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[07]: swf
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[08]: avi
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[09]: ape
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[10]: dts
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[11]: flac
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[12]: ac3
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[13]: wav
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[14]: ogg
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[15]: vc1
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[16]: hevc
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ ========================================
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android source close
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr W/FFmpegExtractor﹕ sniff through BetterSniffFFMPEG failed, try LegacySniffFFMPEG
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ source url:http://traffic.libsyn.com/joeroganexp/p518.mp3
  
  07-06 15:52:34.644    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android source begin open
  
  07-06 15:52:34.648    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android open, url: android-source:0xb7c53e00|file:http://traffic.libsyn.com/joeroganexp/p518.mp3
  
  07-06 15:52:34.648    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ ffmpeg open android data source success, source ptr: 0xb7c53e00
  
  07-06 15:52:34.648    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android source open success
  
  07-06 15:52:34.708    3363-3394/com.kevintcoughlin.smodr D/dalvikvm﹕ GC_FOR_ALLOC freed 361K, 4% free 10852K/11288K, paused 75ms, total 75ms
  
  07-06 15:52:34.844    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ [mp3 @ 0xb7ca7700] Estimating duration from bitrate, this may be inaccurate
  
  07-06 15:52:34.844    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Input #0, mp3, from 'android-source:0xb7c53e00|file:http://traffic.libsyn.com/joeroganexp/p518.mp3':
  
  07-06 15:52:34.844    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Metadata:
  
  07-06 15:52:34.844    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ TSS             : Logic Pro 9.1.8
  
  07-06 15:52:34.848    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ title           : #518 - Matt Fulchiron
  
  07-06 15:52:34.848    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ artist          : Joe Rogan Experience
  
  07-06 15:52:34.848    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ album_artist    : Joe Rogan Experience
  
  07-06 15:52:34.848    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Duration: 02:57:10.21, start: 0.000000, bitrate: 127 kb/s
  
  07-06 15:52:34.848    3363-3376/com.kevintcoughlin.smodr I/FFMPEG﹕ Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
  
  07-06 15:52:34.848    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ FFmpegExtrator, url: android-source:0xb7c53e00|file:http://traffic.libsyn.com/joeroganexp/p518.mp3, format_name: mp3, format_long_name: MP2/3 (MPEG audio layer 2/3)
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ list the formats suppoted by ffmpeg:
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ ========================================
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[00]: mpeg
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[01]: mpegts
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[02]: mov,mp4,m4a,3gp,3g2,mj2
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[03]: matroska,webm
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[04]: asf
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[05]: rm
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[06]: flv
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[07]: swf
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[08]: avi
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[09]: ape
  
  07-06 15:52:34.852    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[10]: dts
  
  07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[11]: flac
  
  07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[12]: ac3
  
  07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[13]: wav
  
  07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[14]: ogg
  
  07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[15]: vc1
  
  07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr V/FFmpegExtractor﹕ format_names[16]: hevc
  
  07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr I/FFmpegExtractor﹕ ========================================
  
  07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr D/FFMPEG﹕ android source close
  
  07-06 15:52:34.856    3363-3376/com.kevintcoughlin.smodr D/FFmpegExtractor﹕ SniffFFMPEG failed to sniff this source
  
  07-06 15:52:34.856    3363-3397/com.kevintcoughlin.smodr D/dalvikvm﹕ GC_FOR_ALLOC freed 120K, 3% free 12342K/12696K, paused 29ms, total 60ms
  
  07-06 15:52:34.860    3363-3397/com.kevintcoughlin.smodr I/dalvikvm-heap﹕ Grow heap (frag case) to 13.981MB for 1960012-byte allocation
  
  07-06 15:52:34.872    3363-3387/com.kevintcoughlin.smodr D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 3% free 14256K/14612K, paused 10ms, total 10ms
  
  07-06 15:52:34.880    3363-3376/com.kevintcoughlin.smodr I/OMXClient﹕ Using client-side OMX mux.
  
  07-06 15:52:34.976    3363-3400/com.kevintcoughlin.smodr I/OMXClient﹕ Using client-side OMX mux.
  
  07-06 15:52:35.144    3363-3393/com.kevintcoughlin.smodr D/dalvikvm﹕ GC_FOR_ALLOC freed 1512K, 12% free 13705K/15532K, paused 12ms, total 36ms
  
  07-06 15:52:35.152    3363-3393/com.kevintcoughlin.smodr I/dalvikvm-heap﹕ Grow heap (frag case) to 15.315MB for 1962812-byte allocation
  
  07-06 15:52:35.200    3363-3388/com.kevintcoughlin.smodr D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 11% free 15621K/17452K, paused 39ms, total 39ms
  
  07-06 15:52:35.356    3363-3400/com.kevintcoughlin.smodr E/ACodec﹕ OMX/mediaserver died, signalling error!
  
  07-06 15:52:35.356    3363-3400/com.kevintcoughlin.smodr E/MediaCodec﹕ Codec reported an error. (omx error 0x8000100d, internalError -32)
  
  07-06 15:52:35.376    3363-3400/com.kevintcoughlin.smodr A/ACodec﹕ frameworks/av/media/libstagefright/ACodec.cpp:499 CHECK(mem.get() != NULL) failed.
  
  07-06 15:52:35.376    3363-3400/com.kevintcoughlin.smodr A/libc﹕ Fatal signal 4 (SIGILL) at 0xb76d563d (code=2), thread 3400 (MediaCodec_loop)

  To my untrained eye it seems like I can get the TrackInfo correctly, but am having a problem reading the data over HTTP. It also seems that how the framework sniffs the mimetype is failing even though I do receive type ’audio/mpeg’.

  Again, I appreciate any direction I receive. I realize that these APIs are very new.

  • ExoPlayer Developer Docs
  • ExoPlayer Source
  • ExoPlayer Class Ref

  Thanks !