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• Piwik 3 Release Candidate

  14 décembre 2016, par Piwik Core Team — Development

  The release candidate for Piwik 3 is now available.

  RC means we think we’re done, but it’s possible we’ve missed something. We hope to ship Piwik 3 on Sunday, December 18th (updated). If you haven’t tested Piwik 3 yet, now is the time ! To test Piwik 3, you can use the beta release channel or you can download the release candidate here (zip).

  Piwik 3 is a jam-packed release, with a number of features focused on security, performance, and more advanced analytics capabilities. Highlights include new UI design, responsive experience on mobile, better email reports, secure password storage, better tracking of downloads and outlinks, and more.

  Not sure where to start with testing ? Try setting up a new installation and taking notes on what you enjoyed and what got you stuck. For more details about what’s new in version 3.0, check out the beta 1, beta 2, beta 3, beta 4 changelogs as well as these blog posts : Piwik 3 overview, and Important notes and API breaking changes in Piwik 3.

  Think you’ve found a bug ? Please post to our Issues tracker. If any known issues come up, you’ll be able to search and find them there.

  Developers, please test your plugins and themes against Piwik 3 and update your plugin.json to require Piwik 3. An in-depth field guide to developer-focused changes and plugin migration is published on the Developer website.

  Do you speak a language other than English ? Help us translate Piwik into more than 50 languages !

  Happy testing !

• .MKV to .MP4 choosing the audio and subtitles ?

  11 décembre 2016, par Leo Letto

  The following stream belongs to a .mkv file with dual audio ;

  Stream #0:0: Video: h264 (High), yuv420p(progressive), 1280x960 [SAR 1:1 DAR 4:3], 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default)
  
  Stream #0:1(eng): Audio: mp3, 48000 Hz, stereo, s16p, 256 kb/s (default)
  
  Stream #0:2(por): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
  
  Stream #0:3(eng): Subtitle: ass (default)

  Which ffmpeg command should I use to create an output with the language in Portuguese, already with the English subtitles ?

  I found some commands that can extract the language-based caption that I specify, but I didn’t find anything related to selecting the audio type.

  This is the entire output from ffmpeg :

  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
  
    libavutil      55. 41.101 / 55. 41.101
  
    libavcodec     57. 66.108 / 57. 66.108
  
    libavformat    57. 58.101 / 57. 58.101
  
    libavdevice    57.  2.100 / 57.  2.100
  
    libavfilter     6. 67.100 /  6. 67.100
  
    libswscale      4.  3.101 /  4.  3.101
  
    libswresample   2.  4.100 /  2.  4.100
  
    libpostproc    54.  2.100 / 54.  2.100
  
  Input #0, matroska,webm, from 'mydualmkv.mkv':
  
    Metadata:
  
      title           : Avidemux
  
      encoder         : libebml v1.2.3 + libmatroska v1.3.0
  
      creation_time   : 2015-08-04T15:25:49.000000Z
  
    Duration: 00:23:37.44, start: 0.000000, bitrate: 1908 kb/s
  
      Stream #0:0: Video: h264 (High), yuv420p(progressive), 1280x960 [SAR 1:1 DAR 4:3], 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default)
  
      Stream #0:1(eng): Audio: mp3, 48000 Hz, stereo, s16p, 256 kb/s (default)
  
      Stream #0:2(pot): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
  
      Stream #0:3(eng): Subtitle: ass (default)
  
  [mp4 @ 0000000000c36700] track 1: codec frame size is not set
  
  Output #0, mp4, to 'path-to-output.mp4':
  
    Metadata:
  
      title           : Avidemux
  
      encoder         : Lavf57.58.101
  
      Stream #0:0: Video: h264 (High) ([33][0][0][0] / 0x0021), yuv420p(progressive), 1280x960 [SAR 1:1 DAR 4:3], q=2-31, 29.97 fps, 29.97 tbr, 16k tbn, 1k tbc (default)
  
      Stream #0:1(por): Audio: ac3 ([165][0][0][0] / 0x00A5), 48000 Hz, stereo, fltp, 192 kb/s
  
      Stream #0:2(eng): Subtitle: mov_text ([8][0][0][0] / 0x0008) (default)
  
      Metadata:
  
        encoder         : Lavc57.66.108 mov_text
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:2 -> #0:1 (copy)
  
    Stream #0:3 -> #0:2 (ass (ssa) -> mov_text (native))
  
  Press [q] to stop, [?] for help
  
  frame= 5451 fps=0.0 q=-1.0 size=   39273kB time=00:03:01.89 bitrate=1768.7kbits/s speed= 363x    
  
  frame=11708 fps=11695 q=-1.0 size=   79743kB time=00:06:30.62 bitrate=1672.3kbits/s speed= 390x    
  
  frame=17902 fps=11926 q=-1.0 size=  122134kB time=00:09:57.60 bitrate=1674.2kbits/s speed= 398x    
  
  frame=24717 fps=12352 q=-1.0 size=  166885kB time=00:13:44.83 bitrate=1657.4kbits/s speed= 412x    
  
  frame=31995 fps=12792 q=-1.0 size=  211010kB time=00:17:47.74 bitrate=1618.9kbits/s speed= 427x    
  
  frame=38979 fps=12988 q=-1.0 size=  260758kB time=00:21:40.64 bitrate=1642.4kbits/s speed= 433x    
  
  frame=42478 fps=13076 q=-1.0 Lsize=  286844kB time=00:23:37.31 bitrate=1657.9kbits/s speed= 436x    
  
  video:252490kB audio:33218kB subtitle:11kB other streams:0kB global headers:0kB muxing overhead: 0.393387%

• FFMPEG encode audio and forced subtitles at same time ?

  8 janvier 2017, par Nick Bell

  I’m using latest static build of ffmpeg windows.

  My input file (.mkv) is :

  [video] - 1080, V_MPEG4/ISO/AVC, 14.6 Mbps, ID#0
  
  [audio] - DTS 5.1, 1510 Kbps, ID#1
  
  [subtitles] - S_TEXT/ASS Lossless English, ID#14

  My problem is this : I convert the audio, so that my target player, a XB1 console (media support faq), is able to play audio/video. However sometimes its rather difficult to hear or parts may be in foreign language, so I want to force the english subtitles into the mix at the same time I convert the audio.

  Currently for the audio, I use the following command

  ffmpeg -i input.mkv -codec copy -acodec ac3 output.mkv

  Can I somehow tie in the forced subtitles (onto the video) in order to save an extra process of taking the output.mkv and trying to force subtitles on ?

  Edit : I’ve tried using the following command to extract subtitles to be able to edit them

  ffmpeg -i Movie.mkv -map 0:s:14 subs.srt

  However i get the error : Stream map '0:s:14' matches no streams

  Edit2 : attempted to extract subtitles and succeeded with

  ffmpeg -i input.mkv -map 0:14 -c copy subtitles.ass

  but still looking to force the subtitles, nonetheless !

  Also - a little bonus to this question - can I somehow extract the .ass file and edit it to only produce subtitles for foreign parts - so english audio doesn’t have subtitles during the movie but foreign audio does have subtitles ?

  Cheers

  Edit3 :

  When I try to use both of the commands at once (my earlier mentioned audio converter & one from the ffmpeg wiki)

  ffmpeg -i input.mkv -codec copy -acodec ac3 -vf "ass=subs.ass" output.mkv

  I get the following error from ffmpeg,

  Filtergraph 'ass=subs.ass' was defined for video output stream 0:0 but codec copy was selected.
  
  Filtering and streamcopy cannot be used together.