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• batch i need to encode hole folder files

  4 mai 2019, par jonedave

  I need one batch code for ffmpeg which can encode & zoom resolution of all videos inside folder to 110% & 125% of original using batch code.

  Here are some codes which I test not working :

  for %%a in ("*.*") do ffmpeg -i "%%a"  -vf scale=2*iw:-1, crop=iw/2:ih/2" "newfiles\%%~na.mp4"
  
  pause

  for %%a in ("*.*") do ffmpeg -i "%%a" -vf "zoompan=z='1+(1.4*in/300)':x='70*in/300':y='190*in/300':d=1"  "newfiles\%%~na.mp4"
  
  for %%a in ("*.*") do ffmpeg -i "%%a" -vf "zoompan=z='1+(1.4*in/300"  "newfiles\%%~na.mp4"
  
  pause

  error i getting

  C:\down\Compressed\DRIVER PACK FOR MOBILE PHONE\DRIVER PACK FOR MOBILE PHONE>ffm
  
  peg -i "avutil-ics-56.dll" -vf "zoompan=z='1+(1.4*in/300"  "newfiles\avutil-ics-
  
  56.mp4"
  
  ffmpeg version N-93461-g6e42021128 Copyright (c) 2000-2019 the FFmpeg developers
  
  
  
    built with gcc 8.2.1 (GCC) 20190212
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfi
  
  g --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libb
  
  luray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enab
  
  le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --e
  
  nable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable
  
  -libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 -
  
  -enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enab
  
  le-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --en
  
  able-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --en
  
  able-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --e
  
  nable-dxva2 --enable-avisynth --enable-libopenmpt
  
    libavutil      56. 26.100 / 56. 26.100
  
    libavcodec     58. 47.105 / 58. 47.105
  
    libavformat    58. 26.101 / 58. 26.101
  
    libavdevice    58.  7.100 / 58.  7.100
  
    libavfilter     7. 48.100 /  7. 48.100
  
    libswscale      5.  4.100 /  5.  4.100
  
    libswresample   3.  4.100 /  3.  4.100
  
    libpostproc    55.  4.100 / 55.  4.100
  
  avutil-ics-56.dll: Invalid data found when processing input
  
  
  
  C:\down\Compressed\DRIVER PACK FOR MOBILE PHONE\DRIVER PACK FOR MOBILE PHONE>ffm
  
  peg -i "ffmpeg.exe" -vf "zoompan=z='1+(1.4*in/300"  "newfiles\ffmpeg.mp4"
  
  ffmpeg version N-93461-g6e42021128 Copyright (c) 2000-2019 the FFmpeg developers
  
  
  
    built with gcc 8.2.1 (GCC) 20190212
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfi
  
  g --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libb
  
  luray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enab
  
  le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --e
  
  nable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable
  
  -libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 -
  
  -enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enab
  
  le-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --en
  
  able-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --en
  
  able-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --e
  
  nable-dxva2 --enable-avisynth --enable-libopenmpt
  
    libavutil      56. 26.100 / 56. 26.100
  
    libavcodec     58. 47.105 / 58. 47.105
  
    libavformat    58. 26.101 / 58. 26.101
  
    libavdevice    58.  7.100 / 58.  7.100
  
    libavfilter     7. 48.100 /  7. 48.100
  
    libswscale      5.  4.100 /  5.  4.100
  
    libswresample   3.  4.100 /  3.  4.100
  
    libpostproc    55.  4.100 / 55.  4.100
  
  ffmpeg.exe: Invalid data found when processing input

• Anomalie #4328 : Depots inaccessibles

  7 mai 2019, par Armen Spidermian

  oui j’ai commencé par poser la question sur #spip
  ou l’on m’a invite a ouvrir un ticket ^^

  redmine@spip.org a écrit :

  La demande #4328 <https://core.spip.net/issues/4328#change-14931> a
  été mise à jour par b b.

  Dans ce cas je t’invite à poser la question sur la liste spip-zone ou
  passer sur http://irc.spip.net/ pour en discuter.

  ---

  Anomalie #4328 : Depots inaccessibles
  <https://core.spip.net/issues/4328#change-14931>

  • Auteur : Armen Spidermian
  • Statut : Fermé
  • Priorité : Normal
  • Assigné à :
  • Catégorie :
  • Version cible :
  • Resolution : invalid
  • Navigateur :

  Spip refuse de se connecter au dépot.

  2019-05-06 13:50:01 78.230.118.204 (pid 7481) :Pri:ERREUR : Erreur
  connexion
  2019-05-06 13:50:02 78.230.118.204 (pid 7481) :Pri:ERREUR : Erreur
  connexion
  2019-05-06 13:50:02 78.230.118.204 (pid 7481) :Pri : !INFO : copie_locale
   : Echec recuperation https://plugins.spip.net/depots/principal.xml sur
  ../IMG/distant/xml/principalxml2fdc.xml status : 0

  Je n’arrive pas a comprendre d’ou ca vient...

  Fichiers ErreurSpip.png
  <https://core.spip.net/attachments/download/1083/ErreurSpip.png> (84,9 ko)

  ---

  Vous recevez ce mail car vous êtes impliqués sur ce projet.
  Pour changer les préférences d’envoi de mail, allez sur
  http://core.spip.net/my/account

• How to correctly calculate which segments are ready to be downloaded using MPEG-DASH

  24 avril 2019, par igal k

  What i’m trying to do ?

  Write a simple MPEG-DASH client using the SegmentTemplate pattern to calculate which segments are ready to be downloaded for a live source.

  A picture taken using chrome’s debugging tools at a moment X showing an mpd request(8af651fd747.....mpd) and the actual segments fetched respectfully to that request.

  

  Given the following MPD

  <mpd availabilitystarttime="2019-04-24T06:43:32Z" maxsegmentduration="PT4.096S" minbuffertime="PT4.096S" minimumupdateperiod="PT15.835S" profiles="urn:mpeg:dash:profile:isoff-live:2011" publishtime="2019-04-24T11:14:01Z" suggestedpresentationdelay="PT11.878S" timeshiftbufferdepth="PT65.536S" type="dynamic" xmlns="urn:mpeg:dash:schema:mpd:2011">
  
    <location>https://content-aaps1.uplynk.com/channel/8af651fd7473474f86a05ffb0a1c8972.mpd?rmt=wv&amp;amp;cid=8af651fd7473474f86a05ffb0a1c8972&amp;amp;oid=600e5c27541344a1bf3818617ad712ce&amp;amp;prettydash=1&amp;amp;exp=1556091088&amp;amp;rn=4138683939&amp;amp;tc=1&amp;amp;ct=c&amp;amp;sig=5fb7f0c18f3f1d2ad4fdee53c02c1e1ed904bc5e8474f4ebf886d209ff7f21c9&amp;amp;pbs=05b6594bcf4b4728ac1094976a80194d</location>
  
    <period start="PT2826.240S">
  
      <adaptationset maxframerate="30" maxheight="720" maxwidth="1280" mimetype="video/mp4" segmentalignment="true" startwithsap="1">
  
        <representation bandwidth="2604473" codecs="avc1.64001e" framerate="30" height="360" scantype="progressive" width="640">
  
          <baseurl>https://x-default-stgec.uplynk.com/aapm/slices/8c1/600e5c27541344a1bf3818617ad712ce/8c1027496a964b049f1bd5895f8f0412/</baseurl>
  
          <segmenttemplate duration="368640" initialization="https://x-default-stgec.uplynk.com/aapm/slices/8c1/600e5c27541344a1bf3818617ad712ce/8c1027496a964b049f1bd5895f8f0412/$RepresentationID$_init.mp4?pbs=05b6594bcf4b4728ac1094976a80194d&amp;amp;_jt=l&amp;amp;chid=8af651fd7473474f86a05ffb0a1c8972" media="$RepresentationID$$Number%08d$.m4f?pbs=05b6594bcf4b4728ac1094976a80194d&amp;amp;_jt=l&amp;amp;chid=8af651fd7473474f86a05ffb0a1c8972" presentationtimeoffset="254361599" startnumber="690" timescale="90000"></segmenttemplate>
  
        </representation>
  
      </adaptationset>
  
    </period>
  
    <utctiming schemeiduri="urn:mpeg:dash:utc:http-iso:2014" value="https://content-aaps1.uplynk.com/misc/utcservertime"></utctiming>
  
  </mpd>

  I see that the next segment request should be #3955

  What i have tried so far

      period.end = 1556104456;
  
      period.start = 2826;
  
      availability_start_time = 1556088212;
  
      max_segment_duration = 4;
  
      time_shift_buffer_depth = 65

  So, first of all, i read DASH-IF-IOP 4.3 section 4.3.4.2 page #82 and implemented the following code :

     int k1 = 1;
  
  int period_duration = period.end - (period.start + data_.availability_start_time);
  
  int k2 = ceil((float)period_duration / (float)data_.max_segment_duration);
  
  double duration = ((float)representation.duration / (float)representation.timeScale);
  
  size_t live_edge = std::min(
  
      (int)floor((float)((data_.publish_time - data_.availability_start_time - period.start) / duration)), k2);
  
  
  
  size_t oldest = std::max(k1, (int)floor((float)((data_.publish_time - data_.availability_start_time - period.start -
  
                                                      data_.time_shift_buffer_depth) /
  
                                                  duration)));

  after calculating everything : k1=1, k2=3355, live_edge=3272 and oldest=3256

  Also tried using ffmpeg’s dashdec.c

  for min_segment :

  if (c->is_live && pls->fragment_duration)
  
      {
  
          num = pls->first_seq_no + (((get_current_time_in_sec() - c->availability_start_time) - c->time_shift_buffer_depth) * pls->fragment_timescale) / pls->fragment_duration;
  
      }

  for max_segment :

  num = pls->first_seq_no + (((get_current_time_in_sec() - c->availability_start_time)) * pls->fragment_timescale) / pls->fragment_duration;

  after a small modification :

  size_t pmax = (((data_.publish_time - data_.availability_start_time))) / duration;
  
  size_t pmin = ((data_.publish_time - data_.availability_start_time) - data_.time_shift_buffer_depth) / duration;

  pmin=3946 pmax=3961

  in the ffmpeg example, i had to manually remove the first_seq_no variable because it looked like i doubled added the SegmentTemplate@StartNumber.

  even after succeeding in this task, how do i exactly build the request list of Segment(NOW) ----> Segment(LIVE_EDGE)