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• Wowza RTMP to RTSP

  3 août 2016, par Nmas

  We’re using a Raspicam to stream live video to a client using Wowza Streaming Engine. We use FFMPEG to encode and send to Wowza and we can succesfully watch the RTMP stream using JWPlayer. This is the FFMPEG command used :

  ffmpeg -t 0 -s 320x240 -f video4linux2 -i /dev/video0 -b:v 250k -tune zerolatency -preset ultrafast -f flv -r 15 rtmp://wowzaaddress:1935/live/live

  To be able to watch the stream on mobile devices we want to use RTSP or HLS which Wowza provides links to, however when we use those links (provided on the Test Player) nothing happens and we can’t even open them to test for example in VLC. We have already added the extra ports on our web server to see if that was the problem and still didn’t work.
  Does anybody know what the problem is or what could we be doing wrong ?

• FFMPEG - Using multiple Fiters including hardsub, denoise, watermark causes "Too many inputs" Error

  17 avril 2017, par Vahid Jamali

  I’m trying to do one command with complex filters that allow for denoising, hardsub, scaling (to 480 height) and watermark.

  I’ve gotten 3/4 filters to work in combination with each other here :

   ffmpeg -i test720.mp4 -vf hqdn3d=1.5:1.5:6:6,scale=w="if(gt(dar\,854/480)\,min(854\,iw*sar)\,2*trunc(iw*sar*oh/ih/2))":h="if(gt(dar\,854/480)\,2*trunc(ih*ow/iw/sar/2)\,min(480\,ih))"\:flags=bicubic,setsar=1\,subtitles=add.ass[out]" -c:v libx264 -crf 18 -preset veryslow -tune film -refs 8 -bf 6 -aq-mode 2  -c:a copy -f mp4 720encoded.mp4

  but when it comes to all for, it gives me a Too many inputs specified for the "movie" filter.

  Here is my command that should work but doesn’t :

   ffmpeg -i test720.mp4 -vf hqdn3d=1.5:1.5:6:6,scale=w="if(gt(dar\,854/480)\,min(854\,iw*sar)\,2*trunc(iw*sar*oh/ih/2))":h="if(gt(dar\,854/480)\,2*trunc(ih*ow/iw/sar/2)\,min(480\,ih))"\:flags=bicubic,setsar=1\,"movie=actorimage.png[wm];[in][wm]overlay=30:main_h-overlay_h-120\,subtitles=add.ass[out]" -c:v libx264 -crf 18 -preset veryslow -tune film -refs 8 -bf 6 -aq-mode 2  -c:a copy -f mp4 720encoded.mp4

  I’m sure I’m making a simply syntax error somewhere in there.

• FFMPEG rtmp live stream with android fps is too low

  27 novembre 2015, par 蔡明原

  I’m interesting live stream from android to youtube.
  I have compile ffmpeg and write jni to live stream with android.
  but the fps is too low, it always has 3 5 fps, the user view is not good.
  how can i do to change the fps.
  this is my jni code with ffmpeg init.

  AVCodecContext *video_codec_ctx = video_stream->codec;
  
    video_codec_ctx->codec_id = video_codec->id;
  
    video_codec_ctx->codec_type = AVMEDIA_TYPE_VIDEO;
  
    video_codec_ctx->level = 31;
  
  
  
    video_codec_ctx->width = width;
  
    video_codec_ctx->height = height;
  
    video_codec_ctx->pix_fmt = PIX_FMT_YUV420P;
  
  
  
    video_codec_ctx->rc_max_rate = 0;
  
    video_codec_ctx->rc_buffer_size = 0;
  
    video_codec_ctx->gop_size = 30;
  
    video_codec_ctx->max_b_frames = 0;
  
    video_codec_ctx->slices = 8;   
  
    video_codec_ctx->b_frame_strategy = 1;
  
    video_codec_ctx->coder_type = 0;
  
    video_codec_ctx->me_cmp = 1;
  
    video_codec_ctx->me_range = 16;
  
    video_codec_ctx->qmin = 10;
  
    video_codec_ctx->qmax = 51;
  
    video_codec_ctx->keyint_min = 25;
  
    video_codec_ctx->refs= 3;   
  
    video_codec_ctx->trellis = 0;
  
    video_codec_ctx->scenechange_threshold = 40;
  
    video_codec_ctx->flags |= CODEC_FLAG_LOOP_FILTER;
  
    video_codec_ctx->me_method = ME_HEX;
  
    video_codec_ctx->me_subpel_quality = 6;
  
    video_codec_ctx->i_quant_factor = 0.71;
  
    video_codec_ctx->qcompress = 0.6;
  
    video_codec_ctx->max_qdiff = 4;
  
    video_codec_ctx->time_base.den = 30;
  
    video_codec_ctx->time_base.num = 1;
  
    video_codec_ctx->bit_rate = 5200*1000;
  
    video_codec_ctx->bit_rate_tolerance = 0;
  
    video_codec_ctx->flags2 |= 0x00000100;
  
  
  
    fmt_context->bit_rate = 6000*1000;
  
  
  
    av_opt_set(video_codec_ctx, "partitions", "i8x8,i4x4,p8x8,b8x8", 0);
  
  
  
    av_opt_set_int(video_codec_ctx, "direct-pred", 1, 0);
  
    av_opt_set_int(video_codec_ctx, "rc-lookahead", 0, 0);
  
    av_opt_set_int(video_codec_ctx, "fast-pskip", 1, 0);
  
    av_opt_set_int(video_codec_ctx, "mixed-refs", 1, 0);
  
    av_opt_set_int(video_codec_ctx, "8x8dct", 0, 0);
  
    av_opt_set_int(video_codec_ctx, "weightb", 0, 0);
  
  
  
    if(fmt_context->oformat->flags & AVFMT_GLOBALHEADER)
  
        video_codec_ctx->flags |= CODEC_FLAG_GLOBAL_HEADER;
  
  
  
    LOGI("Opening video codec");
  
    AVDictionary *vopts = NULL;
  
    av_dict_set(&vopts, "profile", "main", 0);
  
    //av_dict_set(&vopts, "vprofile", "main", 0);
  
    av_dict_set(&vopts, "rc-lookahead", 0, 0);
  
    av_dict_set(&vopts, "tune", "film", 0);  
  
    av_dict_set(&vopts, "preset", "ultrafast", 0);  
  
    av_opt_set(video_codec_ctx->priv_data,"tune","film",0);
  
    av_opt_set(video_codec_ctx->priv_data,"preset","ultrafast",0);
  
    av_opt_set(video_codec_ctx->priv_data,"tune","film",0);
  
    int open_res = avcodec_open2(video_codec_ctx, video_codec, &vopts);