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• Hls media playlist request url override

  16 janvier 2018, par Tomasz Kowalczyk

  Trying to implement hls support on my platform build with laravel. Testing both ffmpeg and AWS Elastic transcoder solutions. The problem is that i’ve got custom url for requesting files for security purposes. That url then returns the hls master playlist, but subsequent request for media playlists has wrong url. This is because the paths in master playlist are not absolute. I tested it with absolute paths and it worked, but I changed the paths manually, can’t see it as an option on AWS Elastic Trancoder, and not tested it yet on ffmpeg package. I’m not really sure what generates the subsequent request for the media playlists ? Is it the video player or hls codec/plugin ? Can i tinker the original response headers to modify the subsequent requests ? Or am I going the wrong way about it ?
  Any help would be greatly appreciated.

• Recording MP3 file from iphone using FFMPEG

  16 octobre 2014, par harit shah

  I am trying to record an mp3 file from iphone. It seems it is not possible so next option I am trying is recording it with aac encoding and convert it with ffmpeg exe to mp3.

  I am recording the m4a file with following code :

  // Set the audio file
  
  NSArray *pathComponents = [NSArray arrayWithObjects:
  
                             [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],
  
                             @"MyAudioMemo.aac",
  
                             nil];
  
  NSURL *outputFileURL = [NSURL fileURLWithPathComponents:pathComponents];
  
  
  
  // Setup audio session
  
  AVAudioSession *session = [AVAudioSession sharedInstance];
  
  [session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
  
  UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
  
  AudioSessionSetProperty (kAudioSessionProperty_OverrideAudioRoute,sizeof (audioRouteOverride),&audioRouteOverride);
  
  
  
  NSMutableDictionary *recordSettings = [[NSMutableDictionary alloc] initWithCapacity:10];
  
  NSNumber *formatObject;
  
  formatObject = [NSNumber numberWithInt: kAudioFormatMPEG4AAC];
  
  
  
  [recordSettings setObject:formatObject forKey: AVFormatIDKey];
  
  [recordSettings setObject:[NSNumber numberWithFloat:44100.0] forKey: AVSampleRateKey];
  
  [recordSettings setObject:[NSNumber numberWithInt:1] forKey:AVNumberOfChannelsKey];
  
  // [recordSettings setObject:[NSNumber numberWithInt:12800] forKey:AVEncoderBitRateKey];
  
  // [recordSettings setObject:[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
  
  [recordSettings setObject:[NSNumber numberWithInt: AVAudioQualityHigh] forKey: AVEncoderAudioQualityKey];

  so when I try to convert it using ffmpeg -i 1.m4a 1.mp3 it says invalid input found while reading 1.m4a. I tried different encoding but everytime I get the same error. Any help on this would be life saving.

  Thanks.

• avformat/mux : Remove redundant checks for write errors

  12 mars 2020, par Andreas Rheinhardt

  avformat/mux : Remove redundant checks for write errors
  If writing a packet didn't directly return an error, the AVIOContext's
  
  error flag is checked for errors (if existing) by write_packet(). And if
  
  write_packet() didn't indicate an error, its callers checked the error
  
  flag of the AVIOContext (if existing). The latter check is redundant.
  The reason for checking twice lies in the FFmpeg-Libav split : The check
  
  in write_packet() has been added in 9ad1e0c1 in Libav. FFmpeg already
  
  had the other checks (since aec9390a), but when 9ad1e0c1 was merged
  
  (in 1f1c1008), no one noticed the redundant checks.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/mux.c