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• Convert Videos with FFMPEG to PowerPoint 2016 compatible video format [closed]

  11 septembre 2020, par Sebastian S.

  I am trying to convert a bunch of videos to a video format that is natively supported by PowerPoint 2013/2016 on a Windows 7 system.

  


  Microsoft recommends on their website mp4 with h264 and aac.

  


  Video and audio file formats supported in PowerPoint

  


  


  In PowerPoint 2013 and later, and in PowerPoint 2016 for Mac, for the best video playback experience, we recommend that you use .mp4 files encoded with H.264 video (a.k.a. MPEG-4 AVC) and AAC audio. In PowerPoint 2010, we recommend that you use .wmv files.

  


  


  


  We recommend using .m4a files encoded with AAC audio. In PowerPoint 2010, we recommend that you use .wav or .wma files.

  


  


  Audio is not important for me.
I tried to convert my videos with ffmpeg using the following options :

  


  ffmpeg -i Input.avi -c:v libx264 -preset slow -crf 22 -c:a copy Output.mp4


  


  However I cannot import the video to PowerPoint 2016 (32 or 64bit, I tried both). I always get a missing codec error.

  


  PPT Error when including video files

  


  Has anyone successfully encoded videos to a natively supported PowerPoint video format (on Windows) ?

  


• FFmpeg on android is crashing in ff_h2645_extract_rbsp function

  6 décembre 2019, par TheWindLaugh

  I have used ffmpeg decode in my decode2 function, it just like this :

  AVPacket pkt;
  
  av_init_packet(&pkt);
  
  pkt.data = (uint8*)vd+16;
  
  pkt.size = vl-16;
  
  m_is_decoding = true;
  
  avcodec_send_packet(m_cctx, &pkt);
  
  int ret = avcodec_receive_frame(m_cctx, m_cfrm);

  Everything works great up until the avcodec_decode_video2 call :

  Build fingerprint: 'HUAWEI/VTR-AL00/HWVTR:9/HUAWEIVTR-AL00/9.1.0.201C00:user/release-keys'
  
  Revision: '0'
  
  cpuAbi/cpuAbi2: 'arm64-v8a#armeabi-v7a#armeabi'
  
  pid: 5829, tid: 6106, name: .myapp.online  >>> com.myapp.online <<<
  
  signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr 0xcc180000
  
  
  
  backtrace:
  
       #00 pc 0064c098  /data/app/com.myapp.online-r3eLwyIHdUEbHPM-MUYw1g==/lib/arm/libapp.so (ff_h2645_extract_rbsp+52)
  
       #01 pc 0064c580  /data/app/com.myapp.online-r3eLwyIHdUEbHPM-MUYw1g==/lib/arm/libapp.so (ff_h2645_packet_split+592)
  
       #02 pc 0037c9e0  /data/app/com.myapp.online-r3eLwyIHdUEbHPM-MUYw1g==/lib/arm/libapp.so
  
       #03 pc 004e6d18  /data/app/com.myapp.online-r3eLwyIHdUEbHPM-MUYw1g==/lib/arm/libapp.so (avcodec_decode_video2+380)
  
       #04 pc 004e76a4  /data/app/com.myapp.online-r3eLwyIHdUEbHPM-MUYw1g==/lib/arm/libapp.so
  
       #05 pc 004eb344  /data/app/com.myapp.online-r3eLwyIHdUEbHPM-MUYw1g==/lib/arm/libapp.so (avcodec_send_packet+308)
  
       #06 pc 001df578  /data/app/com.myapp.online-r3eLwyIHdUEbHPM-MUYw1g==/lib/arm/libapp.so (_bio_binder_codec_video_::decode2(void*, yuv_r*, void const*, int)+1384)
  
       #07 pc 002e66b8  /data/app/com.myapp.online-r3eLwyIHdUEbHPM-MUYw1g==/lib/arm/libapp.so (hm_video_decode_yuv+244)
  
       #08 pc 0003f598  /data/app/com.myapp.online-r3eLwyIHdUEbHPM-MUYw1g==/lib/arm/libapp_yunguan.so (Device::DecodeVideo()+336)
  
       #09 pc 00037324  /data/app/com.myapp.online-r3eLwyIHdUEbHPM-MUYw1g==/lib/arm/libapp_yunguan.so (boost::detail::thread_data, boost::_bi::list1 > > >::run()+32)
  
       #10 pc 00046455  /data/app/com.myapp.online-r3eLwyIHdUEbHPM-MUYw1g==/lib/arm/libapp_yunguan.so
  
       #11 pc 00065ac7  /system/lib/libc.so (__pthread_start(void*)+22)
  
       #12 pc 0001e9ad  /system/lib/libc.so (__start_thread+32)

• Acceptable Video Size For Social Network With FFMpeg

  2 août 2022, par John Santos

  I'm building a social network on Android and using FFMPeg to compress the videos before uploading them. Videos will have maximum 1 minute of duration.

  



  The original video for test has 87.74Mb 1080x1920.

  



  Trying to find the middle point between quality and file size I could get to a video size of either 26Mb with an "meh" quality (which I'm not happy with) or 33.06Mb with a good quality (scaling the video to 480x852).

  



  Problems :

  



  1) It's taking an average of 2min 30sec to compress a 1 minute video !

  



  2) Even 25Mb seems to be too much for a 1 minute video for a social network

  



  The ask :

  



  1) Any clue how do Instagram and Facebook do it to compress and upload the same video above within 1 minute !!?? I know they compress it cause the quality is not the same when on Facebook/Instagram but how to they get it done that fast ?

  



  2) What would it be an acceptable file size for a 1 minute video on Facebook/Instagram ? I'm worried about wasting too much storage for 1 minute videos. Does anyone have any idea about it ?

  



  ---

  



  I'm searching a lot about FFMpeg commands to get it better and better but it would be easier if I had in mind what I want to achieve.