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• ffmpeg concatenate results in bad/garbled output for second input file

  28 février 2017, par Dan

  I am trying to concatenate two videos together using the ffmpeg concat demuxer : a 5-second intro splash and a 60-second main/body video. I understand that the encoding needs to be the same on both files for this to work. I think they are, but the resulting output shows the intro just fine, followed by a totally garbled body. What am I missing ?

  ffmpeg -f concat -i concat.txt -c copy output.mp4

  Contents of concat.txt :

  file 'intro.mp4'
  
  file 'body.mp4'

  and the output of ffprobe for both input files :

  intro.mp4

  ffprobe version 3.2.4 Copyright (c) 2007-2017 the FFmpeg developers
  
    built with Apple LLVM version 7.0.2 (clang-700.1.81)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
  
    libavutil      55. 34.101 / 55. 34.101
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.101 / 57. 56.101
  
    libavdevice    57.  1.100 / 57.  1.100
  
    libavfilter     6. 65.100 /  6. 65.100
  
    libavresample   3.  1.  0 /  3.  1.  0
  
    libswscale      4.  2.100 /  4.  2.100
  
    libswresample   2.  3.100 /  2.  3.100
  
    libpostproc    54.  1.100 / 54.  1.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'intro.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.56.101
  
    Duration: 00:00:05.04, start: 0.000000, bitrate: 73 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x720 [SAR 1:1 DAR 4:3], 69 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler

  body.mp4

  ffprobe version 3.2.4 Copyright (c) 2007-2017 the FFmpeg developers
  
    built with Apple LLVM version 7.0.2 (clang-700.1.81)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
  
    libavutil      55. 34.101 / 55. 34.101
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.101 / 57. 56.101
  
    libavdevice    57.  1.100 / 57.  1.100
  
    libavfilter     6. 65.100 /  6. 65.100
  
    libavresample   3.  1.  0 /  3.  1.  0
  
    libswscale      4.  2.100 /  4.  2.100
  
    libswresample   2.  3.100 /  2.  3.100
  
    libpostproc    54.  1.100 / 54.  1.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'body.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.56.101
  
    Duration: 00:00:36.84, start: 0.000000, bitrate: 5615 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x720 [SAR 1:1 DAR 4:3], 5613 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler

  Output of ffmpeg :

  ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with Apple LLVM version 7.0.2 (clang-700.1.81)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
  
    libavutil      55. 34.101 / 55. 34.101
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.101 / 57. 56.101
  
    libavdevice    57.  1.100 / 57.  1.100
  
    libavfilter     6. 65.100 /  6. 65.100
  
    libavresample   3.  1.  0 /  3.  1.  0
  
    libswscale      4.  2.100 /  4.  2.100
  
    libswresample   2.  3.100 /  2.  3.100
  
    libpostproc    54.  1.100 / 54.  1.100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fdda3018000] Auto-inserting h264_mp4toannexb bitstream filter
  
  Input #0, concat, from 'concat.txt':
  
    Duration: N/A, start: 0.000000, bitrate: 69 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x720 [SAR 1:1 DAR 4:3], 69 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Output #0, mp4, to 'output.mp4':
  
    Metadata:
  
      encoder         : Lavf57.56.101
  
      Stream #0:0(eng): Video: h264 (High) ([33][0][0][0] / 0x0021), yuv420p, 960x720 [SAR 1:1 DAR 4:3], q=2-31, 69 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fdda3800000] Auto-inserting h264_mp4toannexb bitstream filter
  
  frame= 1047 fps=973 q=-1.0 Lsize=   25299kB time=00:00:41.76 bitrate=4962.8kbits/s speed=38.8x    
  
  video:25286kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.050621%

  As far as I can tell, everything is identical except for the bitrate and language. Setting the language doesn’t seem to make a difference. I’ve tried to transcode the intro to a higher bitrate for the intro but can’t get it to stick in the output. I’m OK with transcoding one of the files (ideally the intro) but don’t know what else to try to change. Thoughts ?

• The complete guide on tracking your websites and web apps into multiple Piwiks and how to do it easily & efficiently

  23 février 2017, par InnoCraft — Community, Development

  Getting the tracking of your website and apps right is crucial to your success as you need to ensure the measured data is meaningful and correct. That’s why we, at InnoCraft, help our clients setting up their web tracking and digital measurement strategy. Some challenges include tracking your analytics data into multiple Piwik services as well as the tracking of single-page websites and web applications (covered in a previous article). In this blog post, we explain how to track your data into multiple Piwik websites correctly.

  Embedding the tracking code

  First of all you need to embed your JavaScript tracking code into your website or app as usual. If you haven’t done this yet : Log in to your Piwik, click on “Administration” in the top right and go to “Tracking Code”. There you have various options to adjust your tracking code to your needs.

  Tracking the same data into different websites

  Let’s assume you have set up the regular JavaScript tracking code and you want to track the same data into a second Piwik website. This second Piwik website can be either on the same Piwik installation or on a different Piwik. To do this, add the following line to your tracking code :

  _paq.push(['addTracker', 'https://$yourPiwikDomain/piwik.php', idSite]);

  It should look like this :

  var u = '//$yourPiwikDomain';
  
  _paq.push(['addTracker', u + '/piwik.php', var idSite = 2]); // adds an additional tracker
  
  _paq.push(['setSiteId', '1']); // configures your regular Piwik tracker
  
  _paq.push(['setTrackerUrl', u + 'piwik.php']);

  This will track the same data into website 1 and website 2 of your Piwik installation. You can also change the domain in addTracker to point it to a different Piwik installation :

  _paq.push(['addTracker', '//$differentPiwikDomain/piwik.php', var idSite = 2]);

  All Piwik tracker methods that you call afterwards will be applied to all trackers. Say you call _paq.push(['disableCookies']); _paq.push(['trackPageView']);, then both methods will be called on all tracker instances assuring they will behave the same and will track the same data into both Piwik websites.

  Tracking different data into different websites

  If you want to track only certain data into one website, and different data into an additional website, you need to configure the trackers differently. For example, you want to enable link tracking only for one tracker, but not for the other. The problem is that calling _paq.push(['enableLinkTracking']); enables link tracking on all of your trackers. To workaround this limitation, you can configure your trackers differently like this :

  window.piwikAsyncInit = function () {
  
      Piwik.on('TrackerSetup', function (tracker) {
  
        if (tracker.getSiteId() == 2 
  
           || tracker.getTrackerUrl() === '//$yourPiwikDomain/piwik.php') {
  
            tracker.enableLinkTracking();
  
          }
  
      });
  
  };

  Now it enables link tracking only for the tracker that is configured for a certain website ID or Piwik domain.

  Accessing a previously generated tracker instance

  When you configure a tracker via _paq.push, you create a so called “Async tracker” because Piwik will be loaded asynchronously and create the tracker instance as soon as it is loaded. If you need to get the instance of such a tracker, you can use the method Piwik.getAsyncTracker(trackerUrl, idSite). This can be useful if you have a single-page website and want to track different data into different websites :

  window.addEventListener('hashchange', function() {
  
      if ('undefined' === typeof Piwik) {
  
          // Piwik might not be loaded yet
  
          return;
  
      }
  
      var tracker1 = Piwik.getAsyncTracker('//$yourPiwikDomain/piwik.php', var idSite = 1);
  
      var tracker2 = Piwik.getAsyncTracker('//$yourPiwikDomain/piwik.php', var idSite = 2);
  
      tracker1.setCurrentUrl('/' + window.location.hash.substr(1));
  
      tracker2.setCurrentUrl('/mywebsite/' + window.location.hash.substr(1));
  
  });

  Tracking different data into multiple Piwik installations without using “_paq”

  Some users prefer to not use _paq.push and instead directly create tracker instances themselves using the method Piwik.getTracker(trackerUrl, idSite) like this :

  window.piwikAsyncInit = function () {
  
      var tracker1 = Piwik.getTracker('//$yourPiwikdomain/piwik.php', var idSite = 1);
  
      tracker1.disableCookies();
  
      var tracker2 = Piwik.getTracker('//$yourPiwikdomain/piwik.php', var idSite = 2);
  
      tracker2.enableLinkTracking();
  
  
  
      tracker1.trackPageView();
  
      tracker2.trackPageView();
  
  };

  We usually don’t recommend creating trackers manually as it is more complicated and you need to make sure to configure trackers in the right order. For example to prevent the setting of any cookies, it is recommended to call disableCookies before calling any other methods. If you want to create your trackers manually and you use any of the following methods, make sure to call them in this order :

  disableCookies(), setAPIUrl(), enableCrossDomainLinking(), setCookiePath(), setCookieDomain(), setDomains(), setUserId(), enableLinkTracking()

  Roll-Up Reporting – the easy and efficient way

  Often users track data into multiple websites because they need aggregated data over all their websites. They want to see all statistics for a single website, but also which pages were viewed across all their websites, or how much traffic they got from a specific website or search engine across all websites. This means they add a second tracker to all their websites and track data not only into the regular Piwik website, but also into one additional website that gives them statistics over all websites. This has several disadvantages :

  • Complexity in getting the tracking code right and the time needed to integrate and maintain it
  • Slower website performance because everything needs to be tracked into several websites. This can decrease your conversions and sales
  • Slower Piwik performance because it has to handle twice as much traffic. This means tracking becomes slower, generating the report becomes slower, and the database gets twice as big

  Luckily, there is a better solution called Roll-Up Reporting. With Roll-Up Reporting, you can get aggregated data over all websites and / or for a group of websites without any of these disadvantages. It lets you create as many Roll-Ups as you wish and you can choose which websites’ data should be aggregated together into a new website.

  We had customers who were able to remove one Piwik tracker because of this feature which resulted in less server costs, a faster website, and a faster Piwik. On top of all these advantages, it also lets you view the Visitor Log, Real-time Map, and other widgets and reports across several websites.

  Questions ?

  If you got any questions, please let us know and get in touch with us. You can find more information about the Piwik JavaScript tracker on the Piwik Developer Zone. There is a section dedicated to Multiple Piwik Trackers.

• Video merging ffmpeg taking more than 15 minutes for 5mb video

  27 juillet 2018, par stan wyck

  I am using below ffmpeg command by bravobit ffmpeg android library to merge videos with different resolution and bit rate it takes more than 15 minutes for total of 5mb videos

  -i video1.mp4 -i video2.3gp -filter_complex [1:v]scale=iw*min(1920/iw\,1080/ih):ih*min(1920/iw\,1080/ih),
pad=1920:1080:(1920-iw*min(1920/iw\,1080/ih))/2:(1080-ih*min(1920/iw\,1080/ih))/2,setsar=1[v1];
[2:v]scale=iw*min(1920/iw\,1080/ih):ih*min(1920/iw\,1080/ih),
pad=1920:1080:(1920-iw*min(1920/iw\,1080/ih))/2:(1080-ih*min(1920/iw\,1080/ih))/2,setsar=1[v2];
[v1][1:a][v2][2:a]concat=n=2:v=1:a=1[outv][outa]
"-ab", "48000", "-ac", "2", "-ar", "22050", "-s", "1920x1080", "-vcodec", "libx264", "-crf", "27", "-q", "4", "-preset", "ultrafast", newVideoPath, "-hide_banner"

  Log onSuccess

  ffmpeg version n4.0-39-gda39990 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 4.9.x (GCC) 20150123 (prerelease)
  configuration : —target-os=linux —cross-prefix=/root/bravobit/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- —arch=arm —cpu=cortex-a8 —enable-runtime-cpudetect —sysroot=/root/bravobit/ffmpeg-android/toolchain-android/sysroot —enable-pic —enable-libx264 —enable-ffprobe —enable-libopus —enable-libvorbis —enable-libfdk-aac —enable-libfreetype —enable-libfribidi —enable-libmp3lame —enable-fontconfig —enable-libvpx —enable-libass —enable-yasm —enable-pthreads —disable-debug —enable-version3 —enable-hardcoded-tables —disable-ffplay —disable-linux-perf —disable-doc —disable-shared —enable-static —enable-runtime-cpudetect —enable-nonfree —enable-network —enable-avresample —enable-avformat —enable-avcodec —enable-indev=lavfi —enable-hwaccels —enable-ffmpeg —enable-zlib —enable-gpl —enable-small —enable-nonfree —pkg-config=pkg-config —pkg-config-flags=—static —prefix=/root/bravobit/ffmpeg-android/build/armeabi-v7a —extra-cflags=’-I/root/bravobit/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all’ —extra-ldflags=’-L/root/bravobit/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie’ —extra-cxxflags=
  libavutil 56. 14.100 / 56. 14.100
  libavcodec 58. 18.100 / 58. 18.100
  libavformat 58. 12.100 / 58. 12.100
  libavdevice 58. 3.100 / 58. 3.100
  libavfilter 7. 16.100 / 7. 16.100
  libavresample 4. 0. 0 / 4. 0. 0
  libswscale 5. 1.100 / 5. 1.100
  libswresample 3. 1.100 / 3. 1.100
  libpostproc 55. 1.100 / 55. 1.100
  Input #0, lavfi, from ’anullsrc=channel_layout=stereo:sample_rate=44100’ :
  Duration : N/A, start : 0.000000, bitrate : 705 kb/s
  Stream #0:0 : Audio : pcm_u8, 44100 Hz, stereo, u8, 705 kb/s
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from ’/sdcard/DigitalDashboard/temp/10.57.08.mp4’ :
  Metadata :
  major_brand : isom
  minor_version : 512
  compatible_brands : isomiso2avc1mp41
  encoder : Lavf58.12.100
  Duration : 00:00:15.00, start : 0.000000, bitrate : 1495 kb/s
  Stream #1:0(und) : Video : h264 (avc1 / 0x31637661), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], 1337 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  Metadata :
  handler_name : VideoHandler
  Stream #1:1(und) : Audio : aac (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 153 kb/s (default)
  Metadata :
  handler_name : SoundHandler
  Input #2, mov,mp4,m4a,3gp,3g2,mj2, from ’/sdcard/DigitalDashboard/temp/10.57.19.mp4’ :
  Metadata :
  major_brand : isom
  minor_version : 512
  compatible_brands : isomiso2avc1mp41
  encoder : Lavf58.12.100
  Duration : 00:00:10.03, start : 0.000000, bitrate : 1823 kb/s
  Stream #2:0(und) : Video : h264 (avc1 / 0x31637661), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], 1671 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  Metadata :
  handler_name : VideoHandler
  Stream #2:1(und) : Audio : aac (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 152 kb/s (default)
  Metadata :
  handler_name : SoundHandler
  Stream mapping :
  Stream #1:0 (h264) -> scale
  Stream #1:1 (aac) -> concat:in0:a0
  Stream #2:0 (h264) -> scale
  Stream #2:1 (aac) -> concat:in1:a0
  concat:out:v0 -> Stream #0:0 (libx264)
  concat:out:a0 -> Stream #0:1 (aac)
  Press [q] to stop, [?] for help
  [libx264 @ 0xb8b42e90] -qscale is ignored, -crf is recommended.
  [libx264 @ 0xb8b42e90] using SAR=1/1
  [libx264 @ 0xb8b42e90] using cpu capabilities : ARMv6 NEON
  [libx264 @ 0xb8b42e90] profile Constrained Baseline, level 3.1
  [libx264 @ 0xb8b42e90] 264 - core 152 r2851M ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options : cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=27.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
  Output #0, mp4, to ’/sdcard/DigitalDashboard/temp/10.57.25.mp4’ :
  Metadata :
  encoder : Lavf58.12.100
  Stream #0:0 : Video : h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 1024x576 [SAR 1:1 DAR 16:9], q=-1—1, 25 fps, 12800 tbn, 25 tbc (default)
  Metadata :
  encoder : Lavc58.18.100 libx264
  Side data :
  cpb : bitrate max/min/avg : 0/0/0 buffer size : 0 vbv_delay : -1
  Stream #0:1 : Audio : aac (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 48 kb/s (default)
  Metadata :
  encoder : Lavc58.18.100 aac
  frame= 7 fps=0.0 q=0.0 size= 0kB time=00:00:00.37 bitrate= 1.0kbits/s speed=0.737x
  frame= 21 fps= 21 q=27.0 size= 0kB time=00:00:00.88 bitrate= 0.4kbits/s speed=0.879x
  frame= 35 fps= 23 q=26.0 size= 256kB time=00:00:01.48 bitrate=1411.5kbits/s speed=0.979x
  frame= 50 fps= 25 q=27.0 size= 256kB time=00:00:02.04 bitrate=1026.5kbits/s speed=1.01x
  frame= 64 fps= 25 q=26.0 size= 512kB time=00:00:02.60 bitrate=1612.9kbits/s speed=1.02x
  frame= 79 fps= 26 q=25.0 size= 768kB time=00:00:03.20 bitrate=1963.5kbits/s speed=1.05x
  frame= 95 fps= 26 q=22.0 size= 768kB time=00:00:03.85 bitrate=1632.3kbits/s speed=1.07x
  frame= 110 fps= 27 q=24.0 size= 1024kB time=00:00:04.45 bitrate=1881.7kbits/s speed=1.08x
  frame= 126 fps= 27 q=23.0 size= 1024kB time=00:00:05.10 bitrate=1642.2kbits/s speed= 1.1x
  frame= 142 fps= 27 q=24.0 size= 1280kB time=00:00:05.75 bitrate=1821.0kbits/s speed=1.11x
  frame= 157 fps= 28 q=23.0 size= 1280kB time=00:00:06.31 bitrate=1660.3kbits/s speed=1.11x
  frame= 173 fps= 28 q=25.0 size= 1536kB time=00:00:06.96 bitrate=1806.4kbits/s speed=1.12x
  frame= 189 fps= 28 q=26.0 size= 1536kB time=00:00:07.61 bitrate=1652.2kbits/s speed=1.13x
  frame= 204 fps= 28 q=25.0 size= 1792kB time=00:00:08.21 bitrate=1786.0kbits/s speed=1.14x
  frame= 220 fps= 28 q=19.0 size= 1792kB time=00:00:08.87 bitrate=1655.1kbits/s speed=1.15x
  frame= 238 fps= 29 q=18.0 size= 2048kB time=00:00:09.56 bitrate=1753.8kbits/s speed=1.16x
  frame= 254 fps= 29 q=26.0 size= 2048kB time=00:00:10.26 bitrate=1634.7kbits/s speed=1.17x
  frame= 271 fps= 29 q=22.0 size= 2048kB time=00:00:10.91 bitrate=1537.3kbits/s speed=1.18x
  frame= 288 fps= 30 q=21.0 size= 2048kB time=00:00:11.56 bitrate=1450.9kbits/s speed=1.19x
  frame= 305 fps= 30 q=19.0 size= 2304kB time=00:00:12.26 bitrate=1539.5kbits/s speed=1.19x
  frame= 320 fps= 30 q=21.0 size= 2304kB time=00:00:12.86 bitrate=1467.3kbits/s speed=1.19x
  frame= 337 fps= 30 q=22.0 size= 2304kB time=00:00:13.51 bitrate=1396.7kbits/s speed=1.19x
  frame= 354 fps= 30 q=22.0 size= 2304kB time=00:00:14.21 bitrate=1328.2kbits/s speed= 1.2x
  frame= 371 fps= 30 q=20.0 size= 2560kB time=00:00:14.90 bitrate=1406.8kbits/s speed=1.21x
  frame= 387 fps= 30 q=25.0 size= 2560kB time=00:00:15.51 bitrate=1352.1kbits/s speed=1.21x
  frame= 402 fps= 30 q=27.0 size= 2816kB time=00:00:16.11 bitrate=1431.6kbits/s speed= 1.2x
  frame= 416 fps= 30 q=27.0 size= 2816kB time=00:00:16.67 bitrate=1383.7kbits/s speed= 1.2x
  frame= 430 fps= 30 q=27.0 size= 3072kB time=00:00:17.27 bitrate=1456.7kbits/s speed= 1.2x
  frame= 444 fps= 30 q=26.0 size= 3072kB time=00:00:17.83 bitrate=1411.2kbits/s speed=1.19x
  frame= 460 fps= 30 q=25.0 size= 3328kB time=00:00:18.43 bitrate=1478.8kbits/s speed=1.19x
  frame= 476 fps= 30 q=21.0 size= 3584kB time=00:00:19.08 bitrate=1538.3kbits/s speed=1.19x
  frame= 493 fps= 30 q=23.0 size= 3584kB time=00:00:19.78 bitrate=1484.1kbits/s speed= 1.2x
  frame= 511 fps= 30 q=24.0 size= 3840kB time=00:00:20.48 bitrate=1536.0kbits/s speed= 1.2x
  frame= 527 fps= 30 q=23.0 size= 4096kB time=00:00:21.13 bitrate=1588.0kbits/s speed= 1.2x
  frame= 542 fps= 30 q=25.0 size= 4096kB time=00:00:21.78 bitrate=1540.6kbits/s speed=1.21x
  frame= 558 fps= 30 q=25.0 size= 4352kB time=00:00:22.38 bitrate=1592.7kbits/s speed=1.21x
  frame= 574 fps= 30 q=25.0 size= 4352kB time=00:00:22.98 bitrate=1550.9kbits/s speed=1.21x
  frame= 590 fps= 30 q=24.0 size= 4608kB time=00:00:23.63 bitrate=1597.0kbits/s speed=1.21x
  frame= 607 fps= 30 q=17.0 size= 4608kB time=00:00:24.38 bitrate=1548.3kbits/s speed=1.21x
  frame= 622 fps= 30 q=19.0 size= 4608kB time=00:00:24.93 bitrate=1513.7kbits/s speed=1.21x
  frame= 625 fps= 30 q=-1.0 Lsize= 4827kB time=00:00:25.03 bitrate=1579.9kbits/s speed=1.21x
  video:4345kB audio:470kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead : 0.251744%
  [libx264 @ 0xb8b42e90] frame I:3 Avg QP:20.33 size : 86455
  [libx264 @ 0xb8b42e90] frame P:622 Avg QP:23.46 size : 6736
  [libx264 @ 0xb8b42e90] mb I I16..4 : 100.0% 0.0% 0.0%
  [libx264 @ 0xb8b42e90] mb P I16..4 : 1.8% 0.0% 0.0% P16..4 : 37.9% 0.0% 0.0% 0.0% 0.0% skip:60.3%
  [libx264 @ 0xb8b42e90] coded y,uvDC,uvAC intra : 41.0% 51.8% 22.0% inter : 15.3% 10.0% 0.8%
  [libx264 @ 0xb8b42e90] i16 v,h,dc,p : 29% 27% 24% 20%
  [libx264 @ 0xb8b42e90] i8c dc,h,v,p : 42% 23% 22% 14%
  [libx264 @ 0xb8b42e90] kb/s:1423.72
  [aac @ 0xb8b81070] Qavg : 472.000