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  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

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  • iPhone video thumbnail upside down

    30 juin 2015, par ffmaer

    Quicktime can play it right. But ffmpeg will produce an upside-down thumbnail sometimes.

    ffmpeg -i input.MOV -ss 00:00:00.002 -vframes 1 -y output.png

    I like to generate thumbnails of correct positions. What are some good remedies ?

    Thanks

  • How to switch between audio streams added using ffmpeg on an iPhone ?

    24 décembre 2019, par Tony M

    I have an m.mp4 with English audio and want to add a second audio stream in Italian so that I can play either language using the iPhone. When I used this command :

    ffmpeg -i m.mp4 -i ita.mp3 -c copy -map 0 -map 1 out.mp4

    The output from ffmpeg -i out.mp4 (see below) shows that a new audio stream is added, yet when I transfer the video to the TV app and play it on either MacOS or iOS it only plays the original English and I see no options to play other languages.

    How do I get it to be able to switch between either audio ?

    Here is the output from ffmpeg -i out.mp4:

        Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 400x300 [SAR 1:1 DAR 4:3], q=2-31, 482 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 24k tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 102 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
    Stream #0:2: Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 152 kb/s
    
    Metadata:
    
      encoder         : LAME3.100
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
  Stream #1:0 -> #0:2 (copy)

  • 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.

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