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• trouble compiling ffmpeg library and converter class

  24 février 2013, par user2104126

  I am using this project as a reference : The code is avaiable at http://roman10.net/src/affmpeg.zip.

  I am trying to compile this project with ffmpeg with different configuration than the project suggests.
  I've compiled a new libffmpeg.so and added it to the project.
  However, now i'm getting an "UnsatisfiedLinkError"

  02-24 11:05:45.644: D/dalvikvm(11363): Trying to load lib /data/data/roman10.media.ffmpeg/lib/libffmpeg.so 0x47b0ec70
  
  02-24 11:05:45.680: D/dalvikvm(11363): Added shared lib /data/data/roman10.media.ffmpeg/lib/libffmpeg.so 0x47b0ec70
  
  02-24 11:05:45.680: D/dalvikvm(11363): No JNI_OnLoad found in /data/data/roman10.media.ffmpeg/lib/libffmpeg.so 0x47b0ec70, skipping init
  
  02-24 11:05:45.684: D/dalvikvm(11363): Trying to load lib /data/data/roman10.media.ffmpeg/lib/libconverter.so 0x47b0ec70
  
  02-24 11:05:45.687: I/dalvikvm(11363): Unable to dlopen(/data/data/roman10.media.ffmpeg/lib/libconverter.so): Cannot load library: link_image[1995]: failed to link libconverter.so
  
  02-24 11:05:45.687: W/dalvikvm(11363): Exception Ljava/lang/UnsatisfiedLinkError; thrown during Lroman10/media/ffmpeg/ffmpegService;.<clinit>
  
  02-24 11:05:45.687: W/dalvikvm(11363): Class init failed in newInstance call (Lroman10/media/ffmpeg/ffmpegService;)
  
  02-24 11:05:45.687: D/AndroidRuntime(11363): Shutting down VM
  
  02-24 11:05:45.687: W/dalvikvm(11363): threadid=1: thread exiting with uncaught exception (group=0x4001d7d0)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363): FATAL EXCEPTION: main
  
  02-24 11:05:45.695: E/AndroidRuntime(11363): java.lang.ExceptionInInitializerError
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at java.lang.Class.newInstanceImpl(Native Method)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at java.lang.Class.newInstance(Class.java:1429)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at android.app.ActivityThread.handleCreateService(ActivityThread.java:2940)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at android.app.ActivityThread.access$3300(ActivityThread.java:125)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2087)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at android.os.Handler.dispatchMessage(Handler.java:99)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at android.os.Looper.loop(Looper.java:123)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at android.app.ActivityThread.main(ActivityThread.java:4627)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at java.lang.reflect.Method.invokeNative(Native Method)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at java.lang.reflect.Method.invoke(Method.java:521)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:871)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at dalvik.system.NativeStart.main(Native Method)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363): Caused by: java.lang.UnsatisfiedLinkError: Library converter not found
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at java.lang.Runtime.loadLibrary(Runtime.java:461)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at java.lang.System.loadLibrary(System.java:557)
  
  02-24 11:05:45.695: E/AndroidRuntime(11363):    at roman10.media.ffmpeg.ffmpegService.<clinit>(ffmpegService.java:123)
  
  </clinit></clinit>

  I decided to recompile the converter.so file
  however, when running the ndk-build command on it, i receive these messages :

  c:\Users\user\workspace\Main\jni>c:\work\android-ndk-r8d\ndk-build
  
  c:/android-ndk-r8d/build/core/build-binary.mk:266: warning: overriding comm
  
  ands for target `c:/Users/user/workspace/Main//obj/local/armeabi/objs/converter'
  
  
  
  c:/android-ndk-r8d/build/core/build-binary.mk:266: warning: ignoring old co
  
  mmands for target `c:/Users/user/workspace/Main//obj/local/armeabi/objs/converte
  
  r'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:266: warning: overriding comm
  
  ands for target `c:/Users/user/workspace/Main//obj/local/armeabi/objs/converter'
  
  
  
  c:/android-ndk-r8d/build/core/build-binary.mk:266: warning: ignoring old co
  
  mmands for target `c:/Users/user/workspace/Main//obj/local/armeabi/objs/converte
  
  r'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:357: warning: overriding comm
  
  ands for target `c:/Users/user/workspace/Main//obj/local/armeabi'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:357: warning: ignoring old co
  
  mmands for target `c:/Users/user/workspace/Main//obj/local/armeabi'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:439: warning: overriding comm
  
  ands for target `c:/Users/user/workspace/Main//libs/armeabi'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:439: warning: ignoring old co
  
  mmands for target `c:/Users/user/workspace/Main//libs/armeabi'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:357: warning: overriding comm
  
  ands for target `c:/Users/user/workspace/Main//obj/local/armeabi'
  
  c:/android-ndk-r8d/build/core/build-binary.mk:357: warning: ignoring old co
  
  mmands for target `c:/Users/user/workspace/Main//obj/local/armeabi'
  
  "Compile thumb : converter <= cmdutils.c
  
  c:/Users/user/workspace/Main//jni/cmdutils.c:32:34: fatal error: libavformat/avf
  
  ormat.h: No such file or directory
  
  compilation terminated.
  
  make: *** [c:/Users/user/workspace/Main//obj/local/armeabi/objs/converter/cmduti
  
  ls.o] Error 1

  What can I do to fix this, and make it work ?

• Neutral net or neutered

  4 juin 2013, par Mans — Law and liberty

  In recent weeks, a number of high-profile events, in the UK and elsewhere, have been quickly seized upon to promote a variety of schemes for monitoring or filtering Internet access. These proposals, despite their good intentions of protecting children or fighting terrorism, pose a serious threat to fundamental liberties. Although at a glance the ideas may seem like a reasonable price to pay for the prevention of some truly hideous crimes, there is more than first meets the eye. Internet regulation in any form whatsoever is the thin end of a wedge at whose other end we find severely restricted freedom of expression of the kind usually associated with oppressive dictatorships. Where the Internet was once a novelty, it now forms an integrated part of modern society ; regulating the Internet means regulating our lives.

  Terrorism

  Following the brutal murder of British soldier Lee Rigby in Woolwich, attempts were made in the UK to revive the controversial Communications Data Bill, also dubbed the snooper’s charter. The bill would give police and security services unfettered access to details (excluding content) of all digital communication in the UK without needing so much as a warrant.

  The powers afforded by the snooper’s charter would, the argument goes, enable police to prevent crimes such as the one witnessed in Woolwich. True or not, the proposal would, if implemented, also bring about infrastructure for snooping on anyone at any time for any purpose. Once available, the temptation may become strong to extend, little by little, the legal use of these abilities to cover ever more everyday activities, all in the name of crime prevention, of course.

  In the emotional aftermath of a gruesome act, anything with the promise of preventing it happening again may seem like a good idea. At times like these it is important, more than ever, to remain rational and carefully consider all the potential consequences of legislation, not only the intended ones.

  Hate speech

  Hand in hand with terrorism goes hate speech, preachings designed to inspire violence against people of some singled-out nation, race, or other group. Naturally, hate speech is often to be found on the Internet, where it can reach large audiences while the author remains relatively protected. Naturally, we would prefer for it not to exist.

  To fulfil the utopian desire of a clean Internet, some advocate mandatory filtering by Internet service providers and search engines to remove this unwanted content. Exactly how such censoring might be implemented is however rarely dwelt upon, much less the consequences inadvertent blocking of innocent material might have.

  Pornography

  Another common target of calls for filtering is pornography. While few object to the blocking of child pornography, at least in principle, the debate runs hotter when it comes to the legal variety. Pornography, it is claimed, promotes violence towards women and is immoral or generally offensive. As such it ought to be blocked in the name of the greater good.

  The conviction last week of paedophile Mark Bridger for the abduction and murder of five-year-old April Jones renewed the debate about filtering of pornography in the UK ; his laptop was found to contain child pornography. John Carr of the UK government’s Council on Child Internet Safety went so far as suggesting a default blocking of all pornography, access being granted to an Internet user only once he or she had registered with some unspecified entity. Registering people wishing only to access perfectly legal material is not something we do in a democracy.

  The reality is that Google and other major search engines already remove illegal images from search results and report them to the appropriate authorities. In the UK, the Internet Watch Foundation, a non-government organisation, maintains a blacklist of what it deems ‘potentially criminal’ content, and many Internet service providers block access based on this list.

  While well-intentioned, the IWF and its blacklist should raise some concerns. Firstly, a vigilante organisation operating in secret and with no government oversight acting as the nation’s morality police has serious implications for freedom of speech. Secondly, the blocks imposed are sometimes more far-reaching than intended. In one incident, an attempt to block the cover image of the Scorpions album Virgin Killer hosted by Wikipedia (in itself a dubious decision) rendered the entire related article inaccessible as well as interfered with editing.

  Net neutrality

  Content filtering, or more precisely the lack thereof, is central to the concept of net neutrality. Usually discussed in the context of Internet service providers, this is the principle that the user should have equal, unfiltered access to all content. As a consequence, ISPs should not be held responsible for the content they deliver. Compare this to how the postal system works.

  The current debate shows that the principle of net neutrality is important not only at the ISP level, but should also include providers of essential services on the Internet. This means search engines should not be responsible for or be required to filter results, email hosts should not be required to scan users’ messages, and so on. No mandatory censoring can be effective without infringing the essential liberties of freedom of speech and press.

  Social networks operate in a less well-defined space. They are clearly not part of the essential Internet infrastructure, and they require that users sign up and agree to their terms and conditions. Because of this, they can include restrictions that would be unacceptable for the Internet as a whole. At the same time, social networks are growing in importance as means of communication between people, and as such they have a moral obligation to act fairly and apply their rules in a transparent manner.

  Facebook was recently under fire, accused of not taking sufficient measures to curb ‘hate speech,’ particularly against women. Eventually they pledged to review their policies and methods, and reducing the proliferation of such content will surely make the web a better place. Nevertheless, one must ask how Facebook (or another social network) might react to similar pressure from, say, a religious group demanding removal of ‘blasphemous’ content. What about demands from a foreign government ? Only yesterday, the Turkish prime minister Erdogan branded Twitter ‘a plague’ in a TV interview.

  Rather than impose upon Internet companies the burden of law enforcement, we should provide them the latitude to set their own policies as well as the legal confidence to stand firm in the face of unreasonable demands. The usual market forces will promote those acting responsibly.

  Further reading

  • Tory-Labour pact could save data bill, says Lord Howard
  • Internet companies warn May over ‘snooper’s charter’
  • Snooper’s charter ‘should be replaced by strengthening of existing powers’
  • Exclusive : ‘Snooper’s charter’ would not have prevented Woolwich attack, says MI5
  • Search engines urged to block more online porn sites
  • Why technology must be the solution to child abuse material online
  • Google must take more action to police explicit content, says Vince Cable
  • Facebook bows to campaign groups over ‘hate speech’
  • Facebook sexism campaign attracts thousands online
  • Türkischer Ministerpräsident : Twitter ist eine Plage
  • Valls : « La traque sur Internet doit être une priorité pour nous »
  • La Cnil, futur juge d’Internet
  • “National security matter” : Third agency caught unilaterally blocking web sites

• ffmpeg video stitching error (error while opening decoder...)

  24 mai 2013, par Revoluzifer

  I'm trying to stitch nine videos into one grid using this command :

  /usr/local/bin/ffmpeg -loglevel debug 
  
  -i ./woohoo/7_video.mp4 -i ./woohoo/5_video.mp4 -i ./woohoo/6_video.mp4 
  
  -i ./woohoo/2_video.mp4 -i ./woohoo/8_video.mp4 -i ./woohoo/0_video.mp4 
  
  -i ./woohoo/3_video.mp4 -i ./woohoo/1_video.mp4 -i ./woohoo/10_video.mp4 
  
  -filter_complex "
  
      [0:0]pad=iw:ih[a];[1:0]scale=w=iw/4:h=ih/4[b];[2:0]scale=w=iw/4:h=ih/4[c];
  
      [3:0]scale=w=iw/4:h=ih/4[d];[4:0]scale=w=iw/4:h=ih/4[e];
  
      [5:0]scale=w=iw/4:h=ih/4[f];[6:0]scale=w=iw/4:h=ih/4[g];
  
      [7:0]scale=w=iw/4:h=ih/4[h];[8:0]scale=w=iw/4:h=ih/4[i];
  
      [0:0]scale=w=iw/4:h=ih/4[j];
  
      [a][b]overlay=0*w:0*h[k];[k][c]overlay=1*w:0*h[l];[l][d]overlay=2*w:0*h[m];
  
      [m][e]overlay=0*w:1*h[n];[n][f]overlay=1*w:1*h[o];[o][g]overlay=2*w:1*h[p];
  
      [p][h]overlay=0*w:2*h[q];[q][i]overlay=1*w:2*h[r];[r][j]overlay=2*w:2*h
  
      " 
  
  -c:v libx264 -an -r 30 -q:v 0 -threads 0 ./woohoo/10_video_out.mp4

  I'm running Ubuntu 10.04 LTS

  The complete output given by ffmpeg looks like this :

  ffmpeg version N-52943-g500220a Copyright (c) 2000-2013 the FFmpeg developers
  
    built on May 23 2013 16:44:21 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
  
    configuration: --enable-gpl --enable-version3 --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-zlib
  
    libavutil      52. 30.100 / 52. 30.100
  
    libavcodec     55.  7.100 / 55.  7.100
  
    libavformat    55.  4.101 / 55.  4.101
  
    libavdevice    55.  0.100 / 55.  0.100
  
    libavfilter     3. 63.101 /  3. 63.101
  
    libswscale      2.  3.100 /  2.  3.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Splitting the commandline.
  
  
  
  (...)
  
  
  
  Successfully parsed a group of options.
  
  Parsing a group of options: input file ./woohoo/7_video.mp4.
  
  Successfully parsed a group of options.
  
  Opening an input file: ./woohoo/7_video.mp4.
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2919e20] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2919e20] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2919e20] File position before avformat_find_stream_info() is 969848
  
  [h264 @ 0x291aa80] no picture 
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2919e20] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2919e20] File position after avformat_find_stream_info() is 19245
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './woohoo/7_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.4.101
  
    Duration: 00:00:14.93, start: 0.000000, bitrate: 519 kb/s
  
      Stream #0:0(und), 1, 1/15360: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1/60, 516 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Successfully opened the file.
  
  Parsing a group of options: input file ./woohoo/5_video.mp4.
  
  Successfully parsed a group of options.
  
  Opening an input file: ./woohoo/5_video.mp4.
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x291f580] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x291f580] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x291f580] File position before avformat_find_stream_info() is 990829
  
  [h264 @ 0x2920340] no picture 
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x291f580] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x291f580] File position after avformat_find_stream_info() is 15914
  
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from './woohoo/5_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.4.101
  
    Duration: 00:00:14.93, start: 0.000000, bitrate: 530 kb/s
  
      Stream #1:0(und), 1, 1/15360: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1/60, 528 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Successfully opened the file.
  
  Parsing a group of options: input file ./woohoo/6_video.mp4.
  
  Successfully parsed a group of options.
  
  Opening an input file: ./woohoo/6_video.mp4.
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2921aa0] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2921aa0] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2921aa0] File position before avformat_find_stream_info() is 709220
  
  [h264 @ 0x2935f60] no picture 
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2921aa0] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2921aa0] File position after avformat_find_stream_info() is 22467
  
  Input #2, mov,mp4,m4a,3gp,3g2,mj2, from './woohoo/6_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.4.101
  
    Duration: 00:00:15.00, start: 0.000000, bitrate: 378 kb/s
  
      Stream #2:0(und), 1, 1/15360: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1/60, 375 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Successfully opened the file.
  
  Parsing a group of options: input file ./woohoo/2_video.mp4.
  
  Successfully parsed a group of options.
  
  Opening an input file: ./woohoo/2_video.mp4.
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x29ad800] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x29ad800] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x29ad800] File position before avformat_find_stream_info() is 928241
  
  [h264 @ 0x29b1040] no picture 
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x29ad800] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x29ad800] File position after avformat_find_stream_info() is 28508
  
  Input #3, mov,mp4,m4a,3gp,3g2,mj2, from './woohoo/2_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.4.101
  
    Duration: 00:00:14.87, start: 0.000000, bitrate: 499 kb/s
  
      Stream #3:0(und), 1, 1/15360: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1/60, 496 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Successfully opened the file.
  
  Parsing a group of options: input file ./woohoo/8_video.mp4.
  
  Successfully parsed a group of options.
  
  Opening an input file: ./woohoo/8_video.mp4.
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x29b2f00] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x29b2f00] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x29b2f00] File position before avformat_find_stream_info() is 1038553
  
  [h264 @ 0x29b3cc0] no picture 
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x29b2f00] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x29b2f00] File position after avformat_find_stream_info() is 20282
  
  Input #4, mov,mp4,m4a,3gp,3g2,mj2, from './woohoo/8_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.4.101
  
    Duration: 00:00:15.03, start: 0.000000, bitrate: 552 kb/s
  
      Stream #4:0(und), 1, 1/15360: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1/60, 549 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Successfully opened the file.
  
  Parsing a group of options: input file ./woohoo/0_video.mp4.
  
  Successfully parsed a group of options.
  
  Opening an input file: ./woohoo/0_video.mp4.
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2a30f20] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2a30f20] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2a30f20] File position before avformat_find_stream_info() is 1158061
  
  [h264 @ 0x2a318e0] no picture 
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2a30f20] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2a30f20] File position after avformat_find_stream_info() is 19639
  
  Input #5, mov,mp4,m4a,3gp,3g2,mj2, from './woohoo/0_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.4.101
  
    Duration: 00:00:15.03, start: 0.000000, bitrate: 616 kb/s
  
      Stream #5:0(und), 1, 1/15360: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1/60, 614 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Successfully opened the file.
  
  Parsing a group of options: input file ./woohoo/3_video.mp4.
  
  Successfully parsed a group of options.
  
  Opening an input file: ./woohoo/3_video.mp4.
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ac6ba0] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ac6ba0] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ac6ba0] File position before avformat_find_stream_info() is 1102892
  
  [h264 @ 0x2ab4f00] no picture 
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ac6ba0] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ac6ba0] File position after avformat_find_stream_info() is 22585
  
  Input #6, mov,mp4,m4a,3gp,3g2,mj2, from './woohoo/3_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.4.101
  
    Duration: 00:00:15.03, start: 0.000000, bitrate: 586 kb/s
  
      Stream #6:0(und), 1, 1/15360: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1/60, 583 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Successfully opened the file.
  
  Parsing a group of options: input file ./woohoo/1_video.mp4.
  
  Successfully parsed a group of options.
  
  Opening an input file: ./woohoo/1_video.mp4.
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ab6b20] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ab6b20] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ab6b20] File position before avformat_find_stream_info() is 933389
  
  [h264 @ 0x2ad7d80] no picture 
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ab6b20] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ab6b20] File position after avformat_find_stream_info() is 20610
  
  Input #7, mov,mp4,m4a,3gp,3g2,mj2, from './woohoo/1_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.4.101
  
    Duration: 00:00:14.97, start: 0.000000, bitrate: 498 kb/s
  
      Stream #7:0(und), 1, 1/15360: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1/60, 495 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Successfully opened the file.
  
  Parsing a group of options: input file ./woohoo/10_video.mp4.
  
  Successfully parsed a group of options.
  
  Opening an input file: ./woohoo/10_video.mp4.
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ad9ac0] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ad9ac0] ISO: File Type Major Brand: isom
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ad9ac0] File position before avformat_find_stream_info() is 933355
  
  [h264 @ 0x2ada4a0] no picture 
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ad9ac0] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x2ad9ac0] File position after avformat_find_stream_info() is 21283
  
  Input #8, mov,mp4,m4a,3gp,3g2,mj2, from './woohoo/10_video.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.4.101
  
    Duration: 00:00:15.03, start: 0.000000, bitrate: 496 kb/s
  
      Stream #8:0(und), 1, 1/15360: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1/60, 493 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Successfully opened the file.
  
  Parsing a group of options: output file ./woohoo/10_video_out.mp4.
  
  Applying option c:v (codec name) with argument libx264.
  
  Applying option an (disable audio) with argument 1.
  
  Applying option r (set frame rate (Hz value, fraction or abbreviation)) with argument 30.
  
  Applying option q:v (use fixed quality scale (VBR)) with argument 0.
  
  Successfully parsed a group of options.
  
  Opening an output file: ./woohoo/10_video_out.mp4.
  
  [Parsed_pad_0 @ 0x2cb42a0] Setting 'width' to value 'iw'
  
  [Parsed_pad_0 @ 0x2cb42a0] Setting 'height' to value 'ih'
  
  [Parsed_scale_1 @ 0x2cb58a0] Setting 'w' to value 'iw/4'
  
  [Parsed_scale_1 @ 0x2cb58a0] Setting 'h' to value 'ih/4'
  
  [Parsed_scale_1 @ 0x2cb58a0] w:iw/4 h:ih/4 flags:'bilinear' interl:0
  
  [Parsed_scale_2 @ 0x2cb6a60] Setting 'w' to value 'iw/4'
  
  [Parsed_scale_2 @ 0x2cb6a60] Setting 'h' to value 'ih/4'
  
  [Parsed_scale_2 @ 0x2cb6a60] w:iw/4 h:ih/4 flags:'bilinear' interl:0
  
  [Parsed_scale_3 @ 0x2cb7920] Setting 'w' to value 'iw/4'
  
  [Parsed_scale_3 @ 0x2cb7920] Setting 'h' to value 'ih/4'
  
  [Parsed_scale_3 @ 0x2cb7920] w:iw/4 h:ih/4 flags:'bilinear' interl:0
  
  [Parsed_scale_4 @ 0x2cb8580] Setting 'w' to value 'iw/4'
  
  [Parsed_scale_4 @ 0x2cb8580] Setting 'h' to value 'ih/4'
  
  [Parsed_scale_4 @ 0x2cb8580] w:iw/4 h:ih/4 flags:'bilinear' interl:0
  
  [Parsed_scale_5 @ 0x2d2f0c0] Setting 'w' to value 'iw/4'
  
  [Parsed_scale_5 @ 0x2d2f0c0] Setting 'h' to value 'ih/4'
  
  [Parsed_scale_5 @ 0x2d2f0c0] w:iw/4 h:ih/4 flags:'bilinear' interl:0
  
  [Parsed_scale_6 @ 0x2d302a0] Setting 'w' to value 'iw/4'
  
  [Parsed_scale_6 @ 0x2d302a0] Setting 'h' to value 'ih/4'
  
  [Parsed_scale_6 @ 0x2d302a0] w:iw/4 h:ih/4 flags:'bilinear' interl:0
  
  [Parsed_scale_7 @ 0x2d31060] Setting 'w' to value 'iw/4'
  
  [Parsed_scale_7 @ 0x2d31060] Setting 'h' to value 'ih/4'
  
  [Parsed_scale_7 @ 0x2d31060] w:iw/4 h:ih/4 flags:'bilinear' interl:0
  
  [Parsed_scale_8 @ 0x2d31d60] Setting 'w' to value 'iw/4'
  
  [Parsed_scale_8 @ 0x2d31d60] Setting 'h' to value 'ih/4'
  
  [Parsed_scale_8 @ 0x2d31d60] w:iw/4 h:ih/4 flags:'bilinear' interl:0
  
  [Parsed_scale_9 @ 0x2d32c60] Setting 'w' to value 'iw/4'
  
  [Parsed_scale_9 @ 0x2d32c60] Setting 'h' to value 'ih/4'
  
  [Parsed_scale_9 @ 0x2d32c60] w:iw/4 h:ih/4 flags:'bilinear' interl:0
  
  [Parsed_overlay_10 @ 0x2cb69a0] Setting 'x' to value '0*w'
  
  [Parsed_overlay_10 @ 0x2cb69a0] Setting 'y' to value '0*h'
  
  [Parsed_overlay_11 @ 0x2cb6420] Setting 'x' to value '1*w'
  
  [Parsed_overlay_11 @ 0x2cb6420] Setting 'y' to value '0*h'
  
  [Parsed_overlay_12 @ 0x2d2ee20] Setting 'x' to value '2*w'
  
  [Parsed_overlay_12 @ 0x2d2ee20] Setting 'y' to value '0*h'
  
  [Parsed_overlay_13 @ 0x2cb7220] Setting 'x' to value '0*w'
  
  [Parsed_overlay_13 @ 0x2cb7220] Setting 'y' to value '1*h'
  
  [Parsed_overlay_14 @ 0x2d322e0] Setting 'x' to value '1*w'
  
  [Parsed_overlay_14 @ 0x2d322e0] Setting 'y' to value '1*h'
  
  [Parsed_overlay_15 @ 0x2d2fba0] Setting 'x' to value '2*w'
  
  [Parsed_overlay_15 @ 0x2d2fba0] Setting 'y' to value '1*h'
  
  [Parsed_overlay_16 @ 0x2cb83a0] Setting 'x' to value '0*w'
  
  [Parsed_overlay_16 @ 0x2cb83a0] Setting 'y' to value '2*h'
  
  [Parsed_overlay_17 @ 0x2cb8480] Setting 'x' to value '1*w'
  
  [Parsed_overlay_17 @ 0x2cb8480] Setting 'y' to value '2*h'
  
  [Parsed_overlay_18 @ 0x2d30d80] Setting 'x' to value '2*w'
  
  [Parsed_overlay_18 @ 0x2d30d80] Setting 'y' to value '2*h'
  
  [graph 0 input from stream 0:0 @ 0x2d36880] Setting 'video_size' to value '640x360'
  
  [graph 0 input from stream 0:0 @ 0x2d36880] Setting 'pix_fmt' to value '0'
  
  [graph 0 input from stream 0:0 @ 0x2d36880] Setting 'time_base' to value '1/15360'
  
  [graph 0 input from stream 0:0 @ 0x2d36880] Setting 'pixel_aspect' to value '1/1'
  
  [graph 0 input from stream 0:0 @ 0x2d36880] Setting 'sws_param' to value 'flags=2'
  
  [graph 0 input from stream 0:0 @ 0x2d36880] Setting 'frame_rate' to value '30/1'
  
  [graph 0 input from stream 0:0 @ 0x2d36880] w:640 h:360 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:1/1 sws_param:flags=2
  
  [graph 0 input from stream 1:0 @ 0x2d2e780] Setting 'video_size' to value '640x360'
  
  [graph 0 input from stream 1:0 @ 0x2d2e780] Setting 'pix_fmt' to value '0'
  
  [graph 0 input from stream 1:0 @ 0x2d2e780] Setting 'time_base' to value '1/15360'
  
  [graph 0 input from stream 1:0 @ 0x2d2e780] Setting 'pixel_aspect' to value '1/1'
  
  [graph 0 input from stream 1:0 @ 0x2d2e780] Setting 'sws_param' to value 'flags=2'
  
  [graph 0 input from stream 1:0 @ 0x2d2e780] Setting 'frame_rate' to value '30/1'
  
  [graph 0 input from stream 1:0 @ 0x2d2e780] w:640 h:360 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:1/1 sws_param:flags=2
  
  [graph 0 input from stream 2:0 @ 0x2cb4d40] Setting 'video_size' to value '640x360'
  
  [graph 0 input from stream 2:0 @ 0x2cb4d40] Setting 'pix_fmt' to value '0'
  
  [graph 0 input from stream 2:0 @ 0x2cb4d40] Setting 'time_base' to value '1/15360'
  
  [graph 0 input from stream 2:0 @ 0x2cb4d40] Setting 'pixel_aspect' to value '1/1'
  
  [graph 0 input from stream 2:0 @ 0x2cb4d40] Setting 'sws_param' to value 'flags=2'
  
  [graph 0 input from stream 2:0 @ 0x2cb4d40] Setting 'frame_rate' to value '30/1'
  
  [graph 0 input from stream 2:0 @ 0x2cb4d40] w:640 h:360 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:1/1 sws_param:flags=2
  
  [graph 0 input from stream 3:0 @ 0x2d318e0] Setting 'video_size' to value '640x360'
  
  [graph 0 input from stream 3:0 @ 0x2d318e0] Setting 'pix_fmt' to value '0'
  
  [graph 0 input from stream 3:0 @ 0x2d318e0] Setting 'time_base' to value '1/15360'
  
  [graph 0 input from stream 3:0 @ 0x2d318e0] Setting 'pixel_aspect' to value '1/1'
  
  [graph 0 input from stream 3:0 @ 0x2d318e0] Setting 'sws_param' to value 'flags=2'
  
  [graph 0 input from stream 3:0 @ 0x2d318e0] Setting 'frame_rate' to value '30/1'
  
  [graph 0 input from stream 3:0 @ 0x2d318e0] w:640 h:360 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:1/1 sws_param:flags=2
  
  [graph 0 input from stream 4:0 @ 0x2cb60c0] Setting 'video_size' to value '640x360'
  
  [graph 0 input from stream 4:0 @ 0x2cb60c0] Setting 'pix_fmt' to value '0'
  
  [graph 0 input from stream 4:0 @ 0x2cb60c0] Setting 'time_base' to value '1/15360'
  
  [graph 0 input from stream 4:0 @ 0x2cb60c0] Setting 'pixel_aspect' to value '1/1'
  
  [graph 0 input from stream 4:0 @ 0x2cb60c0] Setting 'sws_param' to value 'flags=2'
  
  [graph 0 input from stream 4:0 @ 0x2cb60c0] Setting 'frame_rate' to value '30/1'
  
  [graph 0 input from stream 4:0 @ 0x2cb60c0] w:640 h:360 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:1/1 sws_param:flags=2
  
  [graph 0 input from stream 5:0 @ 0x2d2f9e0] Setting 'video_size' to value '640x360'
  
  [graph 0 input from stream 5:0 @ 0x2d2f9e0] Setting 'pix_fmt' to value '0'
  
  [graph 0 input from stream 5:0 @ 0x2d2f9e0] Setting 'time_base' to value '1/15360'
  
  [graph 0 input from stream 5:0 @ 0x2d2f9e0] Setting 'pixel_aspect' to value '1/1'
  
  [graph 0 input from stream 5:0 @ 0x2d2f9e0] Setting 'sws_param' to value 'flags=2'
  
  [graph 0 input from stream 5:0 @ 0x2d2f9e0] Setting 'frame_rate' to value '30/1'
  
  [graph 0 input from stream 5:0 @ 0x2d2f9e0] w:640 h:360 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:1/1 sws_param:flags=2
  
  [graph 0 input from stream 6:0 @ 0x2d33380] Setting 'video_size' to value '640x360'
  
  [graph 0 input from stream 6:0 @ 0x2d33380] Setting 'pix_fmt' to value '0'
  
  [graph 0 input from stream 6:0 @ 0x2d33380] Setting 'time_base' to value '1/15360'
  
  [graph 0 input from stream 6:0 @ 0x2d33380] Setting 'pixel_aspect' to value '1/1'
  
  [graph 0 input from stream 6:0 @ 0x2d33380] Setting 'sws_param' to value 'flags=2'
  
  [graph 0 input from stream 6:0 @ 0x2d33380] Setting 'frame_rate' to value '30/1'
  
  [graph 0 input from stream 6:0 @ 0x2d33380] w:640 h:360 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:1/1 sws_param:flags=2
  
  [graph 0 input from stream 7:0 @ 0x2cb55c0] Setting 'video_size' to value '640x360'
  
  [graph 0 input from stream 7:0 @ 0x2cb55c0] Setting 'pix_fmt' to value '0'
  
  [graph 0 input from stream 7:0 @ 0x2cb55c0] Setting 'time_base' to value '1/15360'
  
  [graph 0 input from stream 7:0 @ 0x2cb55c0] Setting 'pixel_aspect' to value '1/1'
  
  [graph 0 input from stream 7:0 @ 0x2cb55c0] Setting 'sws_param' to value 'flags=2'
  
  [graph 0 input from stream 7:0 @ 0x2cb55c0] Setting 'frame_rate' to value '30/1'
  
  [graph 0 input from stream 7:0 @ 0x2cb55c0] w:640 h:360 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:1/1 sws_param:flags=2
  
  [graph 0 input from stream 8:0 @ 0x2d34ae0] Setting 'video_size' to value '640x360'
  
  [graph 0 input from stream 8:0 @ 0x2d34ae0] Setting 'pix_fmt' to value '0'
  
  [graph 0 input from stream 8:0 @ 0x2d34ae0] Setting 'time_base' to value '1/15360'
  
  [graph 0 input from stream 8:0 @ 0x2d34ae0] Setting 'pixel_aspect' to value '1/1'
  
  [graph 0 input from stream 8:0 @ 0x2d34ae0] Setting 'sws_param' to value 'flags=2'
  
  [graph 0 input from stream 8:0 @ 0x2d34ae0] Setting 'frame_rate' to value '30/1'
  
  [graph 0 input from stream 8:0 @ 0x2d34ae0] w:640 h:360 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:1/1 sws_param:flags=2
  
  [graph 0 input from stream 0:0 @ 0x2d2f8e0] Setting 'video_size' to value '640x360'
  
  [graph 0 input from stream 0:0 @ 0x2d2f8e0] Setting 'pix_fmt' to value '0'
  
  [graph 0 input from stream 0:0 @ 0x2d2f8e0] Setting 'time_base' to value '1/15360'
  
  [graph 0 input from stream 0:0 @ 0x2d2f8e0] Setting 'pixel_aspect' to value '1/1'
  
  [graph 0 input from stream 0:0 @ 0x2d2f8e0] Setting 'sws_param' to value 'flags=2'
  
  [graph 0 input from stream 0:0 @ 0x2d2f8e0] Setting 'frame_rate' to value '30/1'
  
  [graph 0 input from stream 0:0 @ 0x2d2f8e0] w:640 h:360 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:1/1 sws_param:flags=2
  
  [format @ 0x2d382c0] compat: called with args=[yuv420p|yuvj420p|yuv422p|yuv444p]
  
  [format @ 0x2d382c0] Setting 'pix_fmts' to value 'yuv420p|yuvj420p|yuv422p|yuv444p'
  
  Successfully opened the file.
  
  [AVFilterGraph @ 0x2cb0e80] query_formats: 31 queried, 30 merged, 0 already done, 0 delayed
  
  [Parsed_pad_0 @ 0x2cb42a0] w:640 h:360 -> w:640 h:360 x:0 y:0 color:0x000000FF
  
  [Parsed_scale_1 @ 0x2cb58a0] w:640 h:360 fmt:yuv420p sar:1/1 -> w:160 h:90 fmt:yuva420p sar:1/1 flags:0x2
  
  [Parsed_overlay_10 @ 0x2cb69a0] main w:640 h:360 fmt:yuv420p overlay w:160 h:90 fmt:yuva420p
  
  [Parsed_scale_2 @ 0x2cb6a60] w:640 h:360 fmt:yuv420p sar:1/1 -> w:160 h:90 fmt:yuva420p sar:1/1 flags:0x2
  
  [Parsed_overlay_11 @ 0x2cb6420] main w:640 h:360 fmt:yuv420p overlay w:160 h:90 fmt:yuva420p
  
  [Parsed_scale_3 @ 0x2cb7920] w:640 h:360 fmt:yuv420p sar:1/1 -> w:160 h:90 fmt:yuva420p sar:1/1 flags:0x2
  
  [Parsed_overlay_12 @ 0x2d2ee20] main w:640 h:360 fmt:yuv420p overlay w:160 h:90 fmt:yuva420p
  
  [Parsed_scale_4 @ 0x2cb8580] w:640 h:360 fmt:yuv420p sar:1/1 -> w:160 h:90 fmt:yuva420p sar:1/1 flags:0x2
  
  [Parsed_overlay_13 @ 0x2cb7220] main w:640 h:360 fmt:yuv420p overlay w:160 h:90 fmt:yuva420p
  
  [Parsed_scale_5 @ 0x2d2f0c0] w:640 h:360 fmt:yuv420p sar:1/1 -> w:160 h:90 fmt:yuva420p sar:1/1 flags:0x2
  
  [Parsed_overlay_14 @ 0x2d322e0] main w:640 h:360 fmt:yuv420p overlay w:160 h:90 fmt:yuva420p
  
  [Parsed_scale_6 @ 0x2d302a0] w:640 h:360 fmt:yuv420p sar:1/1 -> w:160 h:90 fmt:yuva420p sar:1/1 flags:0x2
  
  [Parsed_overlay_15 @ 0x2d2fba0] main w:640 h:360 fmt:yuv420p overlay w:160 h:90 fmt:yuva420p
  
  [Parsed_scale_7 @ 0x2d31060] w:640 h:360 fmt:yuv420p sar:1/1 -> w:160 h:90 fmt:yuva420p sar:1/1 flags:0x2
  
  [Parsed_overlay_16 @ 0x2cb83a0] main w:640 h:360 fmt:yuv420p overlay w:160 h:90 fmt:yuva420p
  
  [Parsed_scale_8 @ 0x2d31d60] w:640 h:360 fmt:yuv420p sar:1/1 -> w:160 h:90 fmt:yuva420p sar:1/1 flags:0x2
  
  [Parsed_overlay_17 @ 0x2cb8480] main w:640 h:360 fmt:yuv420p overlay w:160 h:90 fmt:yuva420p
  
  [Parsed_scale_9 @ 0x2d32c60] w:640 h:360 fmt:yuv420p sar:1/1 -> w:160 h:90 fmt:yuva420p sar:1/1 flags:0x2
  
  [Parsed_overlay_18 @ 0x2d30d80] main w:640 h:360 fmt:yuv420p overlay w:160 h:90 fmt:yuva420p
  
  [libx264 @ 0x2d38ae0] using mv_range_thread = 24
  
  [libx264 @ 0x2d38ae0] using SAR=1/1
  
  [libx264 @ 0x2d38ae0] using cpu capabilities: MMX2 SSE2Fast SSEMisalign LZCNT
  
  [libx264 @ 0x2d38ae0] profile High, level 3.0
  
  [libx264 @ 0x2d38ae0] 264 - core 132 r2310 76a5c3a - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options:  cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  [h264 @ 0x291aa80] detected 8 logical cores
  
  [h264 @ 0x2920340] detected 8 logical cores
  
  [h264 @ 0x2935f60] detected 8 logical cores
  
  [h264 @ 0x29b1040] detected 8 logical cores
  
  [h264 @ 0x29b3cc0] detected 8 logical cores
  
  Output #0, mp4, to './woohoo/10_video_out.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.4.101
  
      Stream #0:0, 0, 1/90000: Video: h264, yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1/30, q=-1--1, 90k tbn, 30 tbc
  
  Stream mapping:
  
    Stream #0:0 (h264) -> pad
  
    Stream #0:0 (h264) -> scale
  
    Stream #1:0 (h264) -> scale
  
    Stream #2:0 (h264) -> scale
  
    Stream #3:0 (h264) -> scale
  
    Stream #4:0 (h264) -> scale
  
    Stream #5:0 (h264) -> scale
  
    Stream #6:0 (h264) -> scale
  
    Stream #7:0 (h264) -> scale
  
    Stream #8:0 (h264) -> scale
  
    overlay -> Stream #0:0 (libx264)
  
  Error while opening decoder for input stream #4:0
  
  [AVIOContext @ 0x2d2fea0] Statistics: 0 seeks, 0 writeouts
  
  [AVIOContext @ 0x28dd8e0] Statistics: 71559 bytes read, 2 seeks
  
  [AVIOContext @ 0x291fae0] Statistics: 70647 bytes read, 2 seeks
  
  [AVIOContext @ 0x2931c40] Statistics: 71199 bytes read, 2 seeks
  
  [AVIOContext @ 0x2935e40] Statistics: 71399 bytes read, 2 seeks
  
  [AVIOContext @ 0x29b3480] Statistics: 71339 bytes read, 2 seeks
  
  [AVIOContext @ 0x2a2e180] Statistics: 69591 bytes read, 2 seeks
  
  [AVIOContext @ 0x2a317c0] Statistics: 71147 bytes read, 2 seeks
  
  [AVIOContext @ 0x2ab4de0] Statistics: 71363 bytes read, 2 seeks
  
  [AVIOContext @ 0x2c3ab00] Statistics: 71647 bytes read, 2 seeks

  The error line

  Error while opening decoder for input stream #4:0

  seems to be kind of random to me - at least the streams, ffmpeg fails on changes from time to time.