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• FFmpeg batch file - combine individual set files with randomized selection from another set of files

  4 août 2018, par Siampu

  I need to combine a specific set of files with a randomized selection from another set of files ; for more specific context, voice clips followed by a randomized walky-talky beep. At the moment, I’ve managed to assemble this so far from searching around :

  setlocal EnableDelayedExpansion
  
  cd beeps
  
  set n=0
  
  for %%f in (*.*) do (
  
      set /A n+=1
  
      set "file[!n!]=%%f"
  
  )
  
  set /A "rand=(n*%random%)/32768+1"
  
  cd ..
  
  for %%A IN (*.ogg) DO ffmpeg -y -i radio_beep.wav -i "%%A" -i "beeps\!file[%rand%]!" -filter_complex "[0:a:0][1:a:0][2:a:0]concat=n=3:v=0:a=1[outa]" -map "[outa]" "helper\%%A"

  At the moment, this will only run the randomization once and use that selection for every file. How can I have it do the randomization for each .ogg in the folder, and get that into FFmpeg as an input ?

• MPD MPEG-DASH - Shows only one bitrate

  13 août 2018, par Justin Rec

  Help. I wont show bitrate.
  player.getBitrateInfoListFor("video") ;
  Shows only one bitrate - 454948

  manifest.mpd generated by GPAC

   <period duration="PT0H21M48.338S">
  
    <adaptationset segmentalignment="true" group="1" maxwidth="270" maxheight="480" maxframerate="2070000/93437" par="270:480" lang="und">
  
     <representation mimetype="video/mp4" codecs="avc3.640015" width="270" height="480" framerate="2070000/93437" sar="1:1" startwithsap="1" bandwidth="454948">
  
      <segmenttemplate media="480_bbb/segment__track1_$Number$.m4s" timescale="2070000" startnumber="1" duration="8280000" initialization="480_bbb/segment__track1_init.mp4"></segmenttemplate>
  
     </representation>
  
    </adaptationset>
  
    <adaptationset segmentalignment="true" group="1" maxwidth="202" maxheight="360" maxframerate="2070000/93437" par="202:360" lang="und">
  
     <representation mimetype="video/mp4" codecs="avc3.64000D" width="202" height="360" framerate="2070000/93437" sar="1:1" startwithsap="1" bandwidth="281508">
  
      <segmenttemplate media="360_bbb/segment__track1_$Number$.m4s" timescale="2070000" startnumber="1" duration="8280000" initialization="360_bbb/segment__track1_init.mp4"></segmenttemplate>
  
     </representation>
  
    </adaptationset>
  
    <adaptationset segmentalignment="true" group="1" maxwidth="134" maxheight="240" maxframerate="2070000/93437" par="134:240" lang="und">
  
     <representation mimetype="video/mp4" codecs="avc3.64000B" width="134" height="240" framerate="2070000/93437" sar="1:1" startwithsap="1" bandwidth="182832">
  
      <segmenttemplate media="240_bbb/segment__track1_$Number$.m4s" timescale="2070000" startnumber="1" duration="8280000" initialization="240_bbb/segment__track1_init.mp4"></segmenttemplate>
  
     </representation>
  
    </adaptationset>
  
    <adaptationset segmentalignment="true" group="1" maxwidth="80" maxheight="144" maxframerate="2070000/93437" par="80:144" lang="und">
  
     <representation mimetype="video/mp4" codecs="avc3.640009" width="80" height="144" framerate="2070000/93437" sar="1:1" startwithsap="1" bandwidth="99667">
  
      <segmenttemplate media="144_bbb/segment__track1_$Number$.m4s" timescale="2070000" startnumber="1" duration="8280000" initialization="144_bbb/segment__track1_init.mp4"></segmenttemplate>
  
     </representation>
  
    </adaptationset>
  
    <adaptationset segmentalignment="true" lang="und">
  
     <representation mimetype="audio/mp4" codecs="mp4a.40.2" startwithsap="1" bandwidth="66056">
  
      <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="1"></audiochannelconfiguration>
  
      <segmenttemplate media="audio_bbb/segment__track2_$Number$.m4s" timescale="48000" startnumber="1" duration="192000" initialization="audio_bbb/segment__track2_init.mp4"></segmenttemplate>
  
     </representation>
  
    </adaptationset>
  
   </period>

  player.getBitrateInfoListFor("video") ;
  Shows only one bitrate - 454948

• FFMPEG zoompan only applies and shows 3 images out of the many

  26 mai 2018, par Sanjyot Shah

  I am trying to generate a video from images using FFMPEG 4.0 windows built on AWS windows instance using PHP.

  $command2="ffmpeg -r 1/5 -i https://<path>/$images%d.jpg -c:v libx264 -r 5  -t $total_video_time -y  ".trim($video_name)." -i http://<path>/$audio ";
  
  </path></path>

  The above generates the correct video output with all the input images (50 in this case) but without the zoompan effect on the images.

  Now I try to add the zoompan effect for the images using -

  $command2="ffmpeg -r 1/5 -i https://<path>/$images%d.jpg  -filter_complex zoompan=z='zoom+0.002':d=25*4:s=1280x800 -pix_fmt yuv420p  -c:v libx264 -r 5  -t $total_video_time -y  ".trim($video_name)." -i http://<path>/$audio ";
  
  </path></path>

  This will only pick up the first 3 images and apply the zoompan to the first two images or so.

  Can you please help me with this issue ? Any inputs, pointers are welcome too.