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• configure : Make sure libpostproc can be found if -rpath-link doesn't work.

  22 décembre 2018, par Carl Eugen Hoyos

  configure : Make sure libpostproc can be found if -rpath-link doesn't work.
  Solaris ld takes "-rpath-link=libpostproc" as indication to search in "-link=libpostproc".
  

  • [DH] configure
  • [DH] tools/target_dec_fuzzer.c

• FFMPEG RTP Microphone Audio Stream Won't Work Over 4G/LTE

  11 juillet 2021, par Andrew Smith

  I am trying to RTP stream the Mic input of my USB soundcard over 4G to an iphone running VLC, the phone is on the Three UK mobile network. I cannot get any audio at all but it works with no problem if I route it via a VPN, my ffmpeg command is :-

  


  ffmpeg -f dshow -i audio="Microphone (C-Media USB Headphone Set  )" -c:a libmp3lame -f rtp rtp://xxx.xxx.xxx.xxx:1234

  


  I am streaming to the ip of the phone as shown by whatsmyip in a browser, then trying to play the stream on the iphone using rtp ://@:1234

  


  If I switch on my VPN and change the ffmpeg stream-to ip address to my 10.0.0.xxx ip then it works just fine.

  


  Something seems to be blocking RTP when not using the VPN, could it be the 4G network blocking it ?

  


• Flutter : Running FFmpeg.execute to generate thumbnails in a different isolate doesn't work ?

  12 novembre 2024, par Vasudev

  This is the current code to generate thumbnails for Video and Audio files.. It is working fine in most cases.

  


  @override&#xA;Future<imageprovider> thumbnail(String path,&#xA;{required double width, required double height}) async {&#xA;&#xA;&#xA;  final FFmpegSession session = await FFmpegKit.executeAsync(&#xA;          "-loglevel quiet -i &#x27;$filePath&#x27; -y -ss 00:00:00.000 -vframes 1 &#x27;$thumbnailPath&#x27;");&#xA;&#xA;&#xA;  final returnCode = await session.getReturnCode();&#xA;  if (returnCode == null || returnCode.isValueError()) {&#xA;    throw Exception("Thumbnail generation failed");&#xA;  }&#xA;&#xA;/* Returns ImageProvider */&#xA;}&#xA;</imageprovider>

  


  Now in iOS, for large files, the thumbnail generation doesn't really fail. But takes a long time and doesn't complete at all.

  


  This causes performance issues. I would like to run this FFmpeg.execute() in a different isolate, but it doesn't work at all.

  


    final FFmpegSession session = await Isolate.run(
    () async {
      return await FFmpegKit.executeAsync(
          "-loglevel quiet -i '$filePath' -y -ss 00:00:00.000 -vframes 1 '$thumbnailPath'");
    },
  );