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  • ffmpeg universal audio decoder failing on certain wma files

    6 septembre 2016, par Steve M

    I’m trying to build a small universal audio decoding library that decodes the file a frame at a time. I’ve built a command line static ffmpeg that I can exec that works on every file format I have tested. Now I am trying to build a shared library version, so I can directly decode frame by frame. I seem to have success, except it is failing on certain WMA files. FFprobe of a file that is failing (file plays on every music player, and command line ffmpeg with same build configuration shows no problems) :

    Input #0, asf, from 'a.wma':
    
  Metadata:
    
    WM/Track        : 0
    
    track           : 1
    
    WM/MediaPrimaryClassID: {D1607DBC-E323-4BE2-86A1-48A42A28441E}
    
    WM/EncodingTime : 2139839136
    
    WMFSDKVersion   : 11.0.5721.5145
    
    WMFSDKNeeded    : 0.0.0.0000
    
    AverageLevel    : 10107
    
    PeakValue       : 32673
    
    IsVBR           : 0
    
    DeviceConformanceTemplate: M0
    
    WM/WMADRCPeakReference: 32766
    
    WM/WMADRCPeakTarget: 32766
    
    WM/WMADRCAverageReference: 12733
    
    WM/WMADRCAverageTarget: 12733
    
  Duration: 00:00:29.94, start: 0.000000, bitrate: 50 kb/s
    
    Stream #0:0: Audio: wmapro (b[1][0][0] / 0x0162), 44100 Hz, stereo, fltp, 48 kb/s

    Here’s my code for initializing and opening file and the decode function :

    FFMpegAudioDecoder::FFMpegAudioDecoder(int samplerate) : len(0), index(0), samplerate(samplerate)
    
{
    
    av_register_all();
    
    avformat_network_init();
    
    pFormatCtx = avformat_alloc_context();
    
}
    
const char* FFMpegAudioDecoder::open(const char *path, bool metaOnly, int offset, int length)
    
{
    
    const char* error = "File could not be opened";
    
    //this->path = path;
    
    if(avformat_open_input(&pFormatCtx,path,NULL,NULL)!=0){
    
            return error;
    
    }
    
    if(avformat_find_stream_info(pFormatCtx,NULL)<0){
    
            return error;
    
    }
    
    // Dump valid information onto standard error
    
    //av_dump_format(pFormatCtx, 0, path, false);
    

    
    // Find the best audio stream
    
    audioStream = av_find_best_stream(pFormatCtx, AVMEDIA_TYPE_AUDIO, -1, -1, nullptr, 0);
    

    
    if(audioStream < 0){
    
        return error;
    
    }
    
    pCodecCtx=pFormatCtx->streams[audioStream]->codec;
    

    
    // Find the decoder for the audio stream
    
    pCodec=avcodec_find_decoder(pCodecCtx->codec_id);
    
    if(pCodec==NULL){
    
        return error;
    
    }
    

    
    // Open codec
    
    if(avcodec_open2(pCodecCtx, pCodec,NULL)<0){
    
       return error;
    
    }
    
    packet=(AVPacket *)av_malloc(sizeof(AVPacket));
    
    av_init_packet(packet);
    

    
    //Out Audio Param
    
    out_channel_layout=AV_CH_LAYOUT_STEREO;
    
    //nb_samples: AAC-1024 MP3-1152
    
    out_nb_samples=pCodecCtx->frame_size;
    
    out_sample_fmt=AV_SAMPLE_FMT_S16;
    
    out_sample_rate=samplerate;
    
    out_channels=av_get_channel_layout_nb_channels(out_channel_layout);
    
    //Out Buffer Size
    
    out_buffer_size=av_samples_get_buffer_size(NULL,out_channels ,out_nb_samples,out_sample_fmt, 1);
    

    
    out_buffer=(uint8_t *)av_malloc(MAX_AUDIO_FRAME_SIZE*3);
    
    pFrame=av_frame_alloc();
    

    
    //FIX:Some Codec's Context Information is missing
    
    in_sample_fmt = pCodecCtx->sample_fmt;
    
    in_channel_layout=av_get_default_channel_layout(pCodecCtx->channels);
    
    //Swr
    
    initConverter();
    

    
    timeBase = (int64_t(pCodecCtx->time_base.num) * AV_TIME_BASE) / int64_t(pCodecCtx->time_base.den);
    

    
    LOGI("Opened file");
    
    return nullptr;
    
}
    
void FFMpegAudioDecoder::initConverter()
    
{
    
     au_convert_ctx = swr_alloc();
    
     au_convert_ctx=swr_alloc_set_opts(au_convert_ctx,out_channel_layout, out_sample_fmt, out_sample_rate,
    
            in_channel_layout,in_sample_fmt, pCodecCtx->sample_rate,0, NULL);
    
     swr_init(au_convert_ctx);
    
}
    
unsigned char FFMpegAudioDecoder::decode(short int *pcmOutput, unsigned int *samples)
    
{
    
    unsigned int samplesWritten = 0;
    
    //LOGI("BEFORE FRAME");
    
    int read = av_read_frame(pFormatCtx, packet);
    
    //LOGI("AFTER FRAME");
    
    if (read < 0)
    
    {
    
        char msg[101];
    
        av_strerror(read, msg, 100);
    
        LOGI("EOF, %s", msg);
    
        return AUDIODECODER_EOF;
    
    }
    

    
    if(packet->stream_index==audioStream)
    
    {
    
        //LOGI("BEFORE DECODE");
    
        ret = avcodec_decode_audio4( pCodecCtx, pFrame, &got_picture, packet);
    
        const char* msg1 = av_get_sample_fmt_name((AVSampleFormat)pFrame->format);
    
        const char* msg2 = av_get_sample_fmt_name(in_sample_fmt);
    
        LOGI("samples formats, pFrame->format: %s, in_sample_fmt: %s", msg1, msg2);
    
        if (pFrame->format != in_sample_fmt)
    
        {
    
            LOGI("FORMAT CHANGED!@!!!!!, decode return value: %d", ret);
    
            in_sample_fmt = (AVSampleFormat) pFrame->format;
    
            swr_free(&au_convert_ctx);
    
            initConverter();
    
        }
    
        LOGI("Decode return value: %d, packet->size: %d", ret, packet->size);
    
        //LOGI("AFTER DECODE");
    

    
        if ( ret < 0 ) {
    
            char msg[101];
    
            av_strerror(ret, msg, 100);
    
            LOGI("decoder return value error, %s", msg);
    
            //return AUDIODECODER_ERROR;
    
        }
    
        else if ( got_picture > 0 ){
    
            //LOGI("BEFORE CONVERT");
    
            int converted = swr_convert(au_convert_ctx,&out_buffer, MAX_AUDIO_FRAME_SIZE,(const uint8_t **)&pFrame->data , pFrame->nb_samples);
    
           // LOGI("AFTER CONVERT");
    
            if ( converted < 0 ) {
    
                LOGI("CONVERT ERROR");
    
                return AUDIODECODER_ERROR;
    
            }
    
            for (int i = 0; i < converted * 4; i += 2)
    
            {
    
                pcmOutput[i / 2] = (short int)(out_buffer[i+1]<<8 | (out_buffer[i] & 0xFF));
    
            }
    
            samplesWritten = (unsigned int) converted;
    
            //LOGI("after write");
    
            //LOGI("index:%5d\t pts:%lld\t packet size:%d\t samples written:%d",index,packet->pts,packet->size,samplesWritten);
    
            index++;
    

    
        }
    
    }
    

    
    av_packet_unref(packet);
    
    //LOGI("after free, writte:%u", samplesWritten);
    
    *samples = samplesWritten;
    
    return AUDIODECODER_OK;
    
}

    The file reaches EOF after only 1-2 seconds and there is no audio. On a sample run with the WMA file the packet->format is set to null and there are strange return values from the decode4 function, here is the log with some redundancy cut :

    09-05 16:21:51.839 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: fltp
    
09-05 16:21:51.839 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: FORMAT CHANGED!@!!!!!, decode return value: 2
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 2, packet->size: 2230
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 682, packet->size: 2230
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 206, packet->size: 2230
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 194, packet->size: 2230
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 26, packet->size: 2230
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 100, packet->size: 2230
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.880 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 68, packet->size: 2230
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 2230, packet->size: 2230
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 49, packet->size: 2230
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 65, packet->size: 2230
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 216, packet->size: 2230
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 123, packet->size: 2230
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 146, packet->size: 2230
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.881 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 24, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 162, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 90, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 15, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 290, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 220, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 118, packet->size: 2230
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.882 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 135, packet->size: 2230
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 171, packet->size: 2230
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 267, packet->size: 2230
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 56, packet->size: 2230
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: 90, packet->size: 2230
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: Decode return value: -1094995529, packet->size: 2230
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: decoder return value error, Invalid data found when processing input
    
09-05 16:21:51.883 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: samples formats, pFrame->format: (null), in_sample_fmt: (null)
    
09-05 16:21:51.885 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: EOF, End of file
    
09-05 16:21:51.885 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: DECODELOOP EOF 2
    
09-05 16:21:51.886 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: EOF, End of file
    
09-05 16:21:51.887 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: DECODELOOP EOF 2
    
09-05 16:21:51.888 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: EOF, End of file
    
09-05 16:21:51.888 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: DECODELOOP EOF 2
    
09-05 16:21:51.916 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: EOF, End of file
    
09-05 16:21:51.916 5116-5332/com.smp.musicspeed I/SOUNDPROCESS: DECODELOOP EOF 2

  • avdevice : Give names to anonymously typedeffed structs

    17 juillet 2014, par Diego Biurrun
    avdevice : Give names to anonymously typedeffed structs

    Anonymous structs can cause trouble in header files, so try to
    
avoid them altogether as a matter of good style.
    • [DH] libavdevice/bktr.c
    • [DH] libavdevice/fbdev.c
    • [DH] libavdevice/jack_audio.c
    • [DH] libavdevice/oss_audio.c

  • ffmpeg concat failing with dts timing error

    14 septembre 2020, par mrsass

    I have some videos that I am trying to concat with ffmpeg, they all work just fine by themselves but trying to concat them with this command :

    


    ffmpeg -f concat -safe 0 -fflags flush_packets -fflags discardcorrupt -i ./videos.txt -c copy -an 1.mp4


    


    This isn't a live stream or mpeg-dash, it's just standalone mp4's that I would like to join into one longer video.

    


    It's just a constant stream of errors like this :

    


    [mp4 @ 0x5560664a1780] Non-monotonous DTS in output stream 0:0; previous: 72811593, current: 4396274; changing to 72811594. This may result in incorrect timestamps in the output file.
[mp4 @ 0x5560664a1780] Non-monotonous DTS in output stream 0:0; previous: 72811594, current: 4396786; changing to 72811595. This may result in incorrect timestamps in the output file.
[mp4 @ 0x5560664a1780] Non-monotonous DTS in output stream 0:0; previous: 72811595, current: 4397298; changing to 72811596. This may result in incorrect timestamps in the output file.
[mp4 @ 0x5560664a1780] Non-monotonous DTS in output stream 0:0; previous: 72811596, current: 4397810; changing to 72811597. This may result in incorrect timestamps in the output file.

[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55e9b217ab40] Dropped corrupted packet (stream = 0)
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55e9b217ab40] stream 1, offset 0x402a6: partial file
./videos.txt: Invalid data found when processing input


    


    Just to be clear these aren't .ts videos but mp4 videos.

    


    Here's an example of ffprobe from
      Metadata:
        minor_version   : 512
        major_brand     : isom
        compatible_brands: isomiso2avc1mp41
        comment         : vid:v09044820000brpbed8biap950ufpcr0
        encoder         : Lavf58.20.100
      Duration: 00:00:14.70, start: 0.000000, bitrate: 901 kb/s
        Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 576x1024 [SAR 1:1 DAR 9:16], 830 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 59.94 tbc (default)
        Metadata:
          handler_name    : VideoHandler
        Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 64 kb/s (default)
        Metadata:
          handler_name    : SoundHandler


    


    another of the video file

    


      Metadata:
    minor_version   : 512
    major_brand     : isom
    compatible_brands: isomiso2avc1mp41
    comment         : vid:v090447e0000bo8lplu9uukrbn9qbupg
    encoder         : Lavf58.20.100
  Duration: 00:00:12.12, start: 0.000000, bitrate: 791 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, smpte170m/bt470bg/smpte170m), 576x1024, 718 kb/s, 30 fps, 30 tbr, 1000k tbn, 60 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 64 kb/s (default)
    Metadata:
      handler_name    : SoundHandler


    


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