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  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • Qualité du média après traitement

    21 juin 2013, par

    Le bon réglage du logiciel qui traite les média est important pour un équilibre entre les partis ( bande passante de l’hébergeur, qualité du média pour le rédacteur et le visiteur, accessibilité pour le visiteur ). Comment régler la qualité de son média ?
    Plus la qualité du média est importante, plus la bande passante sera utilisée. Le visiteur avec une connexion internet à petit débit devra attendre plus longtemps. Inversement plus, la qualité du média est pauvre et donc le média devient dégradé voire (...)

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  • Use FFMPEG mux flv and send rtmp on IOS

    3 janvier 2017, par downloss

    I would like to use iphone camera & microphone to capture information pushed out through FFMPEG RTMP Streaming

    The following Function capture information on IOS

    - (void)captureOutput:(AVCaptureOutput *)captureOutput  didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection
    
{    
    
    if (connection == videoCaptureConnection)
    
    {
    
        [manager264 encoderToH264:sampleBuffer];
    
    }
    
    else if (connection == audioCaptureConnection)
    
    {
    
        [manager264 encoderToMP3:sampleBuffer];
    
    }
    
}

    Initialization FFMPEG

    - (int)setX264Resource
    
{
    
    Global_Variables_VVV = (AppDelegate *)[[UIApplication sharedApplication] delegate];
    
    avformat_network_init();
    
    av_register_all();
    

    
    pFormatCtx = avformat_alloc_context();
    
    avformat_alloc_output_context2(&pFormatCtx, NULL, "flv", out_file);
    
    fmt = pFormatCtx->oformat;
    

    
    //Open output URL
    
    if (avio_open(&pFormatCtx->pb, out_file, AVIO_FLAG_READ_WRITE) < 0)
    
    {
    
        printf("Failed to open output file! \n");
    
        return -1;
    
    }
    

    
    /* Add the audio and video streams using the default format codecs
    
     * and initialize the codecs. */
    
    video_st = NULL;
    
    audio_st = NULL;
    
   if (fmt->video_codec != AV_CODEC_ID_NONE) {
    
        video_st = add_stream(pFormatCtx, &pCodec, AV_CODEC_ID_H264);
    
    }
    
   if (fmt->audio_codec != AV_CODEC_ID_NONE) {
    
        audio_st = add_stream(pFormatCtx, &aCodec, AV_CODEC_ID_MP3);
    
    }
    

    
    /* Now that all the parameters are set, we can open the audio and
    
     * video codecs and allocate the necessary encode buffers. */
    
    if (video_st)
    
        [self open_video:pFormatCtx avcodec:pCodec avstream:video_st];
    

    
    if (audio_st)
    
        [self open_audio:pFormatCtx avcodec:aCodec avstream:audio_st];
    

    
    // Show some Information
    
    av_dump_format(pFormatCtx, 0, out_file, 1);
    

    
    //Write File Header
    
    avformat_write_header(pFormatCtx, NULL);
    

    
    av_new_packet(&pkt, picture_size);
    
    av_new_packet(&pkt2, picture_size);
    

    
    AVCodecContext *c = video_st->codec;
    

    
    y_size = c->width * c->height;
    

    
    if (pFrame)
    
        pFrame->pts = 0;
    

    
    if(aFrame)
    
    {
    
        aFrame->pts = 0;
    
    }
    

    
    return 0;
    
}
    

    
static AVStream *add_stream(AVFormatContext *oc, AVCodec **codec, enum AVCodecID codec_id)
    
{
    
    AVCodecContext *c;
    
    AVStream *st;
    
    /* find the encoder */
    
    *codec = avcodec_find_encoder(codec_id);
    
    if (!(*codec))
    
    {
    
        NSLog(@"Could not find encoder for '%s'\n",
    
          avcodec_get_name(codec_id));
    
    }
    
    st = avformat_new_stream(oc, *codec);
    
    if (!st)
    
    {
    
        NSLog(@"Could not allocate stream\n");
    
    }
    
    st->id = oc->nb_streams-1;
    
    c = st->codec;
    
    switch ((*codec)->type)
    
    {
    
        case AVMEDIA_TYPE_AUDIO:
    
            c->codec_id = AV_CODEC_ID_MP3;
    
            c->codec_type = AVMEDIA_TYPE_AUDIO;
    
            c->channels = 1;
    

    
            c->sample_fmt = AV_SAMPLE_FMT_S16P;
    
            c->bit_rate = 128000;
    
            c->sample_rate = 44100;
    
            c->channel_layout = AV_CH_LAYOUT_MONO;
    
            break;
    
        case AVMEDIA_TYPE_VIDEO:
    
            c->codec_id = AV_CODEC_ID_H264;
    
            c->codec_type=AVMEDIA_TYPE_VIDEO;
    
            /* Resolution must be a multiple of two. */
    
            c->width    = 720;
    
            c->height   = 1280;
    
            /* timebase: This is the fundamental unit of time (in seconds) in terms
    
             * of which frame timestamps are represented. For fixed-fps content,
    
             * timebase should be 1/framerate and timestamp increments should be
    
             * identical to 1. */
    
            c->time_base.den = 30;
    
            c->time_base.num = 1;
    
            c->gop_size      = 15; /* emit one intra frame every twelve frames at most */
    
            c->pix_fmt       = PIX_FMT_YUV420P;
    
            c->max_b_frames = 0;
    
            c->bit_rate = 3000000;
    
            c->qmin = 10;
    
            c->qmax = 51;
    

    
            break;
    
        default:
    
            break;
    
    }
    
    /* Some formats want stream headers to be separate. */
    
    if (oc->oformat->flags & AVFMT_GLOBALHEADER)
    
        c->flags |= CODEC_FLAG_GLOBAL_HEADER;
    
    return st;
    
}

    SampleBuffer will turn into H264 and pushed out RTMP Streaming

    - (void)encoderToH264:(CMSampleBufferRef)sampleBuffer
    
{
    
    CVPixelBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
    
    if (CVPixelBufferLockBaseAddress(imageBuffer, 0) == kCVReturnSuccess)
    
    {
    
        UInt8 *bufferbasePtr = (UInt8 *)CVPixelBufferGetBaseAddress(imageBuffer);
    
        UInt8 *bufferPtr = (UInt8 *)CVPixelBufferGetBaseAddressOfPlane(imageBuffer,0);
    
        UInt8 *bufferPtr1 = (UInt8 *)CVPixelBufferGetBaseAddressOfPlane(imageBuffer,1);
    
        size_t buffeSize = CVPixelBufferGetDataSize(imageBuffer);
    
        size_t width = CVPixelBufferGetWidth(imageBuffer);
    
        size_t height = CVPixelBufferGetHeight(imageBuffer);
    
        size_t bytesPerRow = CVPixelBufferGetBytesPerRow(imageBuffer);
    
        size_t bytesrow0 = CVPixelBufferGetBytesPerRowOfPlane(imageBuffer,0);
    
        size_t bytesrow1  = CVPixelBufferGetBytesPerRowOfPlane(imageBuffer,1);
    
        size_t bytesrow2 = CVPixelBufferGetBytesPerRowOfPlane(imageBuffer,2);
    
        UInt8 *yuv420_data = (UInt8 *)malloc(width * height *3/ 2); // buffer to store YUV with layout YYYYYYYYUUVV
    

    

    
        /* convert NV12 data to YUV420*/
    
        UInt8 *pY = bufferPtr ;
    
        UInt8 *pUV = bufferPtr1;
    
        UInt8 *pU = yuv420_data + width*height;
    
        UInt8 *pV = pU + width*height/4;
    
        for(int i =0;i/Read raw YUV data
    
        picture_buf = yuv420_data;
    
        pFrame->data[0] = picture_buf;              // Y
    
        pFrame->data[1] = picture_buf+ y_size;      // U
    
        pFrame->data[2] = picture_buf+ y_size*5/4;  // V
    

    
        int got_picture = 0;
    

    
        // Encode
    
        pFrame->width = 720;
    
        pFrame->height = 1280;
    
        pFrame->format = PIX_FMT_YUV420P;
    

    
        AVCodecContext *c = video_st->codec;
    
        int ret = avcodec_encode_video2(c, &pkt, pFrame, &got_picture);
    
        if(ret < 0)
    
        {
    
            printf("Failed to encode! \n");
    
        }
    

    
        if (got_picture==1)
    
        {
    
            /* Compute current audio and video time. */
    
            video_time = video_st ? video_st->pts.val * av_q2d(video_st->time_base) : 0.0;
    
            pFrame->pts += av_rescale_q(1, video_st->codec->time_base, video_st->time_base);
    

    
            if(pkt.size != 0)
    
            {
    
                printf("Succeed to encode frame: %5lld\tsize:%5d\n", pFrame->pts, pkt.size);
    
                pkt.stream_index = video_st->index;
    
                ret = av_write_frame(pFormatCtx, &pkt);
    
                av_free_packet(&pkt);
    
            }
    
        }
    
        free(yuv420_data);
    
    }
    
    CVPixelBufferUnlockBaseAddress(imageBuffer, 0);
    
}

    SampleBuffer will turn into MP3 and pushed out RTMP Streaming

    -(void)encoderToMP3:(CMSampleBufferRef)sampleBuffer
    
{
    
    CMSampleTimingInfo timing_info;
    
    CMSampleBufferGetSampleTimingInfo(sampleBuffer, 0, &timing_info);
    
    double  pts=0;
    
    double  dts=0;
    
    AVCodecContext *c;
    
    int got_packet, ret;
    
    c = audio_st->codec;
    
    CMItemCount numSamples = CMSampleBufferGetNumSamples(sampleBuffer);
    

    
    NSUInteger channelIndex = 0;
    

    
    CMBlockBufferRef audioBlockBuffer = CMSampleBufferGetDataBuffer(sampleBuffer);
    

    
    size_t audioBlockBufferOffset = (channelIndex * numSamples * sizeof(SInt16));
    
    size_t lengthAtOffset = 0;
    
    size_t totalLength = 0;
    
    SInt16 *samples = NULL;
    
    CMBlockBufferGetDataPointer(audioBlockBuffer, audioBlockBufferOffset, &lengthAtOffset, &totalLength, (char **)(&samples));
    

    
    const AudioStreamBasicDescription *audioDescription = CMAudioFormatDescriptionGetStreamBasicDescription(CMSampleBufferGetFormatDescription(sampleBuffer));
    

    
    SwrContext *swr = swr_alloc();
    

    
    int in_smprt = (int)audioDescription->mSampleRate;
    
    av_opt_set_int(swr, "in_channel_layout",  AV_CH_LAYOUT_MONO, 0);
    
    av_opt_set_int(swr, "out_channel_layout", audio_st->codec->channel_layout,  0);
    

    
    av_opt_set_int(swr, "in_channel_count", audioDescription->mChannelsPerFrame,  0);
    
    av_opt_set_int(swr, "out_channel_count", 1,  0);
    

    
    av_opt_set_int(swr, "out_channel_layout", audio_st->codec->channel_layout,  0);
    
    av_opt_set_int(swr, "in_sample_rate",     audioDescription->mSampleRate,0);
    

    
    av_opt_set_int(swr, "out_sample_rate",    audio_st->codec->sample_rate,0);
    

    
    av_opt_set_sample_fmt(swr, "in_sample_fmt",  AV_SAMPLE_FMT_S16, 0);
    

    
    av_opt_set_sample_fmt(swr, "out_sample_fmt", audio_st->codec->sample_fmt,  0);
    

    
    swr_init(swr);
    
    uint8_t **input = NULL;
    
    int src_linesize;
    
    int in_samples = (int)numSamples;
    
    ret = av_samples_alloc_array_and_samples(&input, &src_linesize, audioDescription->mChannelsPerFrame, in_samples, AV_SAMPLE_FMT_S16P, 0);
    

    
    *input=(uint8_t*)samples;
    
    uint8_t *output=NULL;
    

    
    int out_samples = av_rescale_rnd(swr_get_delay(swr, in_smprt) +in_samples, (int)audio_st->codec->sample_rate, in_smprt, AV_ROUND_UP);
    

    
    av_samples_alloc(&output, NULL, audio_st->codec->channels, out_samples, audio_st->codec->sample_fmt, 0);
    
    in_samples = (int)numSamples;
    
    out_samples = swr_convert(swr, &output, out_samples, (const uint8_t **)input, in_samples);
    

    
    aFrame->nb_samples =(int) out_samples;
    

    
    ret = avcodec_fill_audio_frame(aFrame, audio_st->codec->channels, audio_st->codec->sample_fmt,
    
                                   (uint8_t *)output,
    
                                   (int) out_samples *
    
                                   av_get_bytes_per_sample(audio_st->codec->sample_fmt) *
    
                                   audio_st->codec->channels, 1);
    
    if (ret < 0)
    
    {
    
        fprintf(stderr, "Error fill audio frame: %s\n", av_err2str(ret));
    
    }
    
    aFrame->channel_layout = audio_st->codec->channel_layout;
    
    aFrame->channels=audio_st->codec->channels;
    
    aFrame->sample_rate= audio_st->codec->sample_rate;
    

    
    if (timing_info.presentationTimeStamp.timescale!=0)
    
        pts=(double) timing_info.presentationTimeStamp.value/timing_info.presentationTimeStamp.timescale;
    

    

    
    aFrame->pts = pts*audio_st->time_base.den;
    
    aFrame->pts = av_rescale_q(aFrame->pts, audio_st->time_base, audio_st->codec->time_base);
    

    
    ret = avcodec_encode_audio2(c, &pkt2, aFrame, &got_packet);
    

    
    if (ret < 0)
    
    {
    
        fprintf(stderr, "Error encoding audio frame: %s\n", av_err2str(ret));
    
    }
    
    swr_free(&swr);
    

    
    if (got_packet)
    
    {
    
        pkt2.stream_index = audio_st->index;        
    

    
        // Write the compressed frame to the media file.
    

    
        ret = av_interleaved_write_frame(pFormatCtx, &pkt2);
    
        if (ret != 0)
    
        {
    
            fprintf(stderr, "Error while writing audio frame: %s\n", av_err2str(ret));
    
            av_free_packet(&pkt2);
    
        }
    
    }
    
}

    Soon "Broken pipe" problem occurs after execution.
    PTS is currently feeling is not adjusted, but do not know how to adjust the PTS.

    2016-03-09 16:57:41.058 PoliceCamPlayer[1004:193465] recordVideo....
    
[libx264 @ 0x12f8b6e00] using cpu capabilities: ARMv8 NEON
    
[libx264 @ 0x12f8b6e00] profile Constrained Baseline, level 3.1
    
[libx264 @ 0x12f8b6e00] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=2 lookahead_threads=2 sliced_threads=1 slices=2 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=15 keyint_min=1 scenecut=40 intra_refresh=0 rc=abr mbtree=0 bitrate=3000 ratetol=1.0 qcomp=0.60 qpmin=25 qpmax=51 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, flv, to 'rtmp://XXX.XX.XXX.XX/myapp/jackal':
    
    Stream #0:0: Video: h264 (libx264), yuv420p, 720x1280, q=25-51, 3000 kb/s, 23 tbc
    
    Stream #0:1: Audio: mp3 (libmp3lame), 44100 Hz, mono, s16p, 64 kb/s
    
[flv @ 0x12f8b5400] Using AVStream.codec.time_base as a timebase hint to the muxer is deprecated. Set AVStream.time_base instead.
    
[flv @ 0x12f8b5400] Using AVStream.codec.time_base as a timebase hint to the muxer is deprecated. Set AVStream.time_base instead.
    
[libx264 @ 0x12f8b6e00] Provided packet is too small, needs to be 33468
    
Failed to encode! 
    
Audio_pts:4154432515 pts_time:4.15443e+06 dts:4154432515 dts_time:4.15443e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:43 pts_time:0.043 dts:43 dts_time:0.043 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154433667 pts_time:4.15443e+06 dts:4154433667 dts_time:4.15443e+06 duration:1152 duration_time:1.152 stream_index:1
    
Audio_pts:4154434854 pts_time:4.15443e+06 dts:4154434854 dts_time:4.15443e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:86 pts_time:0.086 dts:86 dts_time:0.086 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154435996 pts_time:4.15444e+06 dts:4154435996 dts_time:4.15444e+06 duration:1152 duration_time:1.152 stream_index:1
    
Audio_pts:4154437138 pts_time:4.15444e+06 dts:4154437138 dts_time:4.15444e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:129 pts_time:0.129 dts:129 dts_time:0.129 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154438281 pts_time:4.15444e+06 dts:4154438281 dts_time:4.15444e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:172 pts_time:0.172 dts:172 dts_time:0.172 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154439467 pts_time:4.15444e+06 dts:4154439467 dts_time:4.15444e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:215 pts_time:0.215 dts:215 dts_time:0.215 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154440609 pts_time:4.15444e+06 dts:4154440609 dts_time:4.15444e+06 duration:1152 duration_time:1.152 stream_index:1
    
Audio_pts:4154441752 pts_time:4.15444e+06 dts:4154441752 dts_time:4.15444e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:258 pts_time:0.258 dts:258 dts_time:0.258 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154442884 pts_time:4.15444e+06 dts:4154442884 dts_time:4.15444e+06 duration:1152 duration_time:1.152 stream_index:1
    
Audio_pts:4154444071 pts_time:4.15444e+06 dts:4154444071 dts_time:4.15444e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:301 pts_time:0.301 dts:301 dts_time:0.301 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154445213 pts_time:4.15445e+06 dts:4154445213 dts_time:4.15445e+06 duration:1152 duration_time:1.152 stream_index:1
    
Audio_pts:4154446355 pts_time:4.15445e+06 dts:4154446355 dts_time:4.15445e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:344 pts_time:0.344 dts:344 dts_time:0.344 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154447498 pts_time:4.15445e+06 dts:4154447498 dts_time:4.15445e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:387 pts_time:0.387 dts:387 dts_time:0.387 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154448640 pts_time:4.15445e+06 dts:4154448640 dts_time:4.15445e+06 duration:1152 duration_time:1.152 stream_index:1
    
Audio_pts:4154449826 pts_time:4.15445e+06 dts:4154449826 dts_time:4.15445e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:430 pts_time:0.43 dts:430 dts_time:0.43 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154450969 pts_time:4.15445e+06 dts:4154450969 dts_time:4.15445e+06 duration:1152 duration_time:1.152 stream_index:1
    
Audio_pts:4154452101 pts_time:4.15445e+06 dts:4154452101 dts_time:4.15445e+06 duration:1152 duration_time:1.152 stream_index:1
    
...................
    
...................
    
...................
    
Video_pts:4343 pts_time:4.343 dts:4343 dts_time:4.343 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154622619 pts_time:4.15462e+06 dts:4154622619 dts_time:4.15462e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:4386 pts_time:4.386 dts:4386 dts_time:4.386 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154623761 pts_time:4.15462e+06 dts:4154623761 dts_time:4.15462e+06 duration:1152 duration_time:1.152 stream_index:1
    
Audio_pts:4154624903 pts_time:4.15462e+06 dts:4154624903 dts_time:4.15462e+06 duration:1152 duration_time:1.152 stream_index:1
    
Audio_pts:4154626090 pts_time:4.15463e+06 dts:4154626090 dts_time:4.15463e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:4429 pts_time:4.429 dts:4429 dts_time:4.429 duration:0 duration_time:0 stream_index:0
    
Audio_pts:4154627222 pts_time:4.15463e+06 dts:4154627222 dts_time:4.15463e+06 duration:1152 duration_time:1.152 stream_index:1
    
Video_pts:4472 pts_time:4.472 dts:4472 dts_time:4.472 duration:0 duration_time:0 stream_index:0
    
Error while writing audio frame: Broken pipe
    
Audio_pts:4154628365 pts_time:4.15463e+06 dts:4154628365 dts_time:4.15463e+06 duration:1152 duration_time:1.152 stream_index:1
    
Error while writing audio frame: Broken pipe
    
Audio_pts:4154629507 pts_time:4.15463e+06 dts:4154629507 dts_time:4.15463e+06 duration:1152 duration_time:1.152 stream_index:1
    
Error while writing audio frame: Broken pipe
    
Audio_pts:4154630693 pts_time:4.15463e+06 dts:4154630693 dts_time:4.15463e+06 duration:1152 duration_time:1.152 stream_index:1
    
Error while writing audio frame: Broken pipe
    
Audio_pts:4154631836 pts_time:4.15463e+06 dts:4154631836 dts_time:4.15463e+06 duration:1152 duration_time:1.152 stream_index:1
    
Error while writing audio frame: Broken pipe
    
Audio_pts:4154632978 pts_time:4.15463e+06 dts:4154632978 dts_time:4.15463e+06 duration:1152 duration_time:1.152 stream_index:1
    
.......................
    
.......................
    
.......................
    
2016-03-09 16:57:49.345 PoliceCamPlayer[1004:193465] stopRecord!!!
    
Video_pts:7783 pts_time:7.783 dts:7783 dts_time:7.783 duration:0 duration_time:0 stream_index:0
    
[flv @ 0x12f8b5400] Failed to update header with correct duration.
    
[flv @ 0x12f8b5400] Failed to update header with correct filesize.
    
[libx264 @ 0x12f8b6e00] frame I:28    Avg QP:25.36  size: 24181
    
[libx264 @ 0x12f8b6e00] frame P:154   Avg QP:25.34  size:  6603
    
[libx264 @ 0x12f8b6e00] mb I  I16..4: 80.9%  0.0% 19.1%
    
[libx264 @ 0x12f8b6e00] mb P  I16..4:  5.9%  0.0%  0.2%  P16..4: 28.2%  4.4%  1.0%  0.0%  0.0%    skip:60.2%
    
[libx264 @ 0x12f8b6e00] final ratefactor: 16.70
    
[libx264 @ 0x12f8b6e00] coded y,uvDC,uvAC intra: 35.8% 9.3% 0.4% inter: 8.8% 1.6% 0.0%
    
[libx264 @ 0x12f8b6e00] i16 v,h,dc,p: 28% 26% 26% 21%
    
[libx264 @ 0x12f8b6e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 26% 25%  3%  7%  4%  5%  3% 13%
    
[libx264 @ 0x12f8b6e00] i8c dc,h,v,p: 85%  9%  5%  0%
    
[libx264 @ 0x12f8b6e00] kb/s:1712.63

  • Video rotation with FFmpeg

    6 mars 2016, par haresh

    I’m developing a PHP web service for my iPhone app in order for the users to upload videos. When users want to see a video on the site they get a horizontal video, so I need rotate the video using FFmpeg commands. Can someone help me ?

    function make_rotation($input, $output, $transpose="1") {
    
    $ffmpegpath = "ffmpeg";
    
    if(!file_exists($input)) return false;  
    
    //$command = "$ffmpegpath -i $input -vf 'transpose=$transpose' $output";
    
    //$command = "ffmpeg -vfilters 'rotate=270' -i $input $output";
    
    $command ="ffmpeg -i $input -vf 'transpose=$transpose'  $output";
    
    exec($command);
    
    return true;
    
}

    Thanks All

  • RTSP/RTMP Video Streaming Client iOS [closed]

    28 mai 2015, par nathansizemore

    I’m in need of a open source solution/library to stream RTSP/RTMP to an iOS Application. I need to build an app that connects to a media server, and opens the provided video stream. I believe there has to be libraries out there, but I have yet to find one that is open source, compiles, actually works, and runs on iOS 5+, iPhone 4+. I do not have a preference, RTMP or RTSP will suffice. Preferably the one with the least amount of work. I have RTSP working on the Android side, but nothing for iOS yet.

    This is what I already know from research today -

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    • MooncatVenture Group - Old FFMPEG, not compatible with ARMv7s (No updates/blogs/commits in over a year)
    • DFURTSPPlayer - This is a working example.

    RTMP

    • Seems possible using Live555/FFMPEG
    • A few libraries are out there for data messaging, but that is all
    • MidnightCoders Project - Does not seem video support is build yet, as Audio is not.

    I’ve never messed with anything video related before, so encoding, frame rate, key frame, chunks, etc... is pretty foreign to me. Right now, it seems building a static binary from Live555/FFMPEG is the only solution to my problem. If so, can anyone give me a simple quickstart guide or links to a blog/example someone has out there ? I’m not looking for anything crazy, just a simple

    1. Download This - LINK
    2. Compile it like this - LINK
    3. Place it into X Folder in Xcode
    4. Create X Object
    5. Read Stream API here - LINK

    If not, anyone want to point me to a working open source library ?

    Oh yeah, this happens to be my first iPhone app and first time in Objective-C. Awesome first project, yeah ?

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