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• Problems loading G.729 decoder with FFmpeg API

  20 juillet 2015, par gapc

  I built a class with the use of the FFmpeg API to decode several audio files (mp3, ogg, G.729, etc) and load them into a data structure as raw audio data. Now for example when I run the following code :

  codec = avcodec_find_decoder(AV_CODEC_ID_G729);
  
  if (codec == NULL){
  
      printf("Codec not found");
  
      exit(1);
  
  }

  The program will indeed output the error message, but if I load mp3 or ogg codecs there’s no issue.

  So to double check I executed in the terminal ffmpeg -decoders to see if the decoder is supported (which I also checked online) and outputs :

  A....D g729                 G.729

  I need the decoder for G.729. Is there anything I’m missing or doing something wrong ? Is there a different way to load this decoder ? Any suggestions would be greatly appreciated.

  The FFmpeg version installed is 2.7.1 on a Debian system

  API use example : https://www.ffmpeg.org/doxygen/2.7/decoding_encoding_8c-example.html

• FFMPEG RTMP Streaming Issue On Live Server

  7 juillet 2016, par skos

  I am trying to stream MP4 file over RTMP with nginx-rtmp. I have no issues streaming on my local machine with this command -

  ffmpeg -re -i "sample-video.mp4" -c copy -f flv rtmp://localhost:1935/live/mystream

  However. when I try to replicate the same on server with command -

  ffmpeg -re -i "sample-video.mp4" -c copy -f flv rtmp://SERVER_IP_ADDRESS:1935/live/mystream

  I get this error - RTMP_Connect0, failed to connect socket. 10060 (Unknown error)

  I looked up online for 10060 socket errors but couldn’t find much help. I am assuming this could be Firewall related but I am not exactly sure how do I resolve this. Any help would be apprecaited. Thanks !

• Convert .MOV video format to .mp4 format

  15 décembre 2015, par Nimesh Chandramaniya

  I am developing an Android app, for which I need to convert videos with .MOV file extension (captured on iOS device) to .mp4 file extension. I tried changing the extension of the file via code (i.e. from MOV to mp4) but this approach didn’t work.

  During my research I came across FFMPEG framework to work with different video file formats and I have the following questions :

  1. Is it possible to convert video file format using FFMPEG framework ? If yes, are there any online tutorials available on how to use this framework in Android ?
  2. Are there any Android API using which I can use to retrieve raw data (uncompressed) of any video file ? (If I can retrieve raw data, it’s easier to convert it to a desired file format)

  I’d appreciate any suggestions on this issue. Thank you in advance.