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• Merge commit ’b704b648f9ecb830874627db958a37e004107d1b’

  8 décembre 2014, par Michael Niedermayer

  Merge commit ’b704b648f9ecb830874627db958a37e004107d1b’
  * commit ’b704b648f9ecb830874627db958a37e004107d1b’ :
  
    mov : parse XMP metadata on demand
  Conflicts :
  
  	libavformat/isom.h
  
  	libavformat/version.h
  See : 054c506e3da35471ea92dbedcaaf720d0754f04e
  The default is left unchanged at enabled
  
  We can change the default if people prefer but i do not want to do that
  
  in a merge.
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavformat/isom.h
  • [DH] libavformat/mov.c
  • [DH] libavformat/version.h

• Video not playing on all browsers (FFMPEG)

  12 février 2021, par Mithradantor

  For days I have been struggeling with ffmpeg (PHP).

  


  I have a website where users can upload video's. Obviously people use .mov, .mp4 and .mpeg created by various devices such as cameras, mobile telephones, tablets and many more devices. The problem I have is that those movies either work on Firefox or Chrome, but almost never on both. No clue why, I guess it has to do with codecs and browser support.

  


  I am using FFMpeg to turn them into webm files. This works 95% of the time. In all browsers I have a working video and the sound works too. But sometimes there is no sound at all.

  


  When I open the movie in a other browser (or Windows media player for example) I do hear sound. It is so random to in what browser or software it works or does not work.

  


  Does anyone know of a way to make sure that your movies work in every browsers i.e. Chrome, FireFox and Safari with both video and audio ? and if so, how can I transform them and into what format (codecs ?)

  


  I dont mind converting a movie into three different formats, as long as both video and audio works.

  


  I hope someone can give me some advice. I have tried many ways but none work cross-browser so far.

  


  An example of the code that I use :

  


  $video->save(new FFMpeg\Format\Video\WebM(), 'export-webm.webm');


  


  Does anyone know how I can make it work on every browser ?

  


  What I already tried is (amongst others) :

  


  using an original mp3 or mov and convert it into webm with this code :

  


  ffmpeg -i origin.mov -c:a libvorbis -strict -2 -c:v libvpx-vp9 output.webm

  


  Unfortunately in FireFox i have visual and audio but in Chrome I have nothing, just a blank screen.

  


• swresample : Choose 16bit internally only if input and output is 16bit or less

  21 juin 2015, par Michael Niedermayer

  swresample : Choose 16bit internally only if input and output is 16bit or less
  or if no rematrix and no resampling is performed and the input is 16bit
  
  note reampling and rematrix itself always use more than 16bit internally
  
  the "internal" sampling format is the format between these steps
  Its unlikely the difference from this commit is audible in any case
  
  unless there is some bug either before or after the change.
  
  but multiple people prefer this and it slightly improves the precission
  
  of computations.
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libswresample/swresample.c
  • [DH] tests/fate/libswresample.mak