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• 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);

• avformat/md5enc : add format, version and column headers

  20 octobre 2013, par Michael Niedermayer

  avformat/md5enc : add format, version and column headers
  See Ticket2280
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavformat/md5enc.c
  • [DH] tests/ref/fate/h264-crop-to-container
  • [DH] tests/ref/fate/h264-extreme-plane-pred
  • [DH] tests/ref/fate/utvideoenc_rgb_left
  • [DH] tests/ref/fate/utvideoenc_rgb_median
  • [DH] tests/ref/fate/utvideoenc_rgb_none
  • [DH] tests/ref/fate/utvideoenc_rgba_left
  • [DH] tests/ref/fate/utvideoenc_rgba_median
  • [DH] tests/ref/fate/utvideoenc_rgba_none
  • [DH] tests/ref/fate/utvideoenc_yuv420_left
  • [DH] tests/ref/fate/utvideoenc_yuv420_median
  • [DH] tests/ref/fate/utvideoenc_yuv420_none
  • [DH] tests/ref/fate/utvideoenc_yuv422_left
  • [DH] tests/ref/fate/utvideoenc_yuv422_median
  • [DH] tests/ref/fate/utvideoenc_yuv422_none
  • [DH] tests/ref/fate/vp8-sign-bias
  • [DH] tests/ref/fate/vp8-size-change
  • [DH] tests/ref/fate/vp8-test-vector-001
  • [DH] tests/ref/fate/vp8-test-vector-002
  • [DH] tests/ref/fate/vp8-test-vector-003
  • [DH] tests/ref/fate/vp8-test-vector-004
  • [DH] tests/ref/fate/vp8-test-vector-005
  • [DH] tests/ref/fate/vp8-test-vector-006
  • [DH] tests/ref/fate/vp8-test-vector-007
  • [DH] tests/ref/fate/vp8-test-vector-008
  • [DH] tests/ref/fate/vp8-test-vector-009
  • [DH] tests/ref/fate/vp8-test-vector-010
  • [DH] tests/ref/fate/vp8-test-vector-011
  • [DH] tests/ref/fate/vp8-test-vector-012
  • [DH] tests/ref/fate/vp8-test-vector-013
  • [DH] tests/ref/fate/vp8-test-vector-014
  • [DH] tests/ref/fate/vp8-test-vector-015
  • [DH] tests/ref/fate/vp8-test-vector-016
  • [DH] tests/ref/fate/vp8-test-vector-017
  • [DH] tests/ref/fate/vp9-00-quantizer-00
  • [DH] tests/ref/fate/vp9-00-quantizer-01
  • [DH] tests/ref/fate/vp9-00-quantizer-02
  • [DH] tests/ref/fate/vp9-00-quantizer-03
  • [DH] tests/ref/fate/vp9-00-quantizer-04
  • [DH] tests/ref/fate/vp9-00-quantizer-05
  • [DH] tests/ref/fate/vp9-00-quantizer-06
  • [DH] tests/ref/fate/vp9-00-quantizer-07
  • [DH] tests/ref/fate/vp9-00-quantizer-08
  • [DH] tests/ref/fate/vp9-00-quantizer-09
  • [DH] tests/ref/fate/vp9-00-quantizer-10
  • [DH] tests/ref/fate/vp9-00-quantizer-11
  • [DH] tests/ref/fate/vp9-00-quantizer-12
  • [DH] tests/ref/fate/vp9-00-quantizer-13
  • [DH] tests/ref/fate/vp9-00-quantizer-14
  • [DH] tests/ref/fate/vp9-00-quantizer-15
  • [DH] tests/ref/fate/vp9-00-quantizer-16
  • [DH] tests/ref/fate/vp9-00-quantizer-17
  • [DH] tests/ref/fate/vp9-00-quantizer-18
  • [DH] tests/ref/fate/vp9-00-quantizer-19
  • [DH] tests/ref/fate/vp9-00-quantizer-20
  • [DH] tests/ref/fate/vp9-00-quantizer-21
  • [DH] tests/ref/fate/vp9-00-quantizer-22
  • [DH] tests/ref/fate/vp9-00-quantizer-23
  • [DH] tests/ref/fate/vp9-00-quantizer-24
  • [DH] tests/ref/fate/vp9-00-quantizer-25
  • [DH] tests/ref/fate/vp9-00-quantizer-26
  • [DH] tests/ref/fate/vp9-00-quantizer-27
  • [DH] tests/ref/fate/vp9-00-quantizer-28
  • [DH] tests/ref/fate/vp9-00-quantizer-29
  • [DH] tests/ref/fate/vp9-00-quantizer-30
  • [DH] tests/ref/fate/vp9-00-quantizer-31
  • [DH] tests/ref/fate/vp9-00-quantizer-32
  • [DH] tests/ref/fate/vp9-00-quantizer-33
  • [DH] tests/ref/fate/vp9-00-quantizer-34
  • [DH] tests/ref/fate/vp9-00-quantizer-35
  • [DH] tests/ref/fate/vp9-00-quantizer-36
  • [DH] tests/ref/fate/vp9-00-quantizer-37
  • [DH] tests/ref/fate/vp9-00-quantizer-38
  • [DH] tests/ref/fate/vp9-00-quantizer-39
  • [DH] tests/ref/fate/vp9-00-quantizer-40
  • [DH] tests/ref/fate/vp9-00-quantizer-41
  • [DH] tests/ref/fate/vp9-00-quantizer-42
  • [DH] tests/ref/fate/vp9-00-quantizer-43
  • [DH] tests/ref/fate/vp9-00-quantizer-44
  • [DH] tests/ref/fate/vp9-00-quantizer-45
  • [DH] tests/ref/fate/vp9-00-quantizer-46
  • [DH] tests/ref/fate/vp9-00-quantizer-47
  • [DH] tests/ref/fate/vp9-00-quantizer-48
  • [DH] tests/ref/fate/vp9-00-quantizer-49
  • [DH] tests/ref/fate/vp9-00-quantizer-50
  • [DH] tests/ref/fate/vp9-00-quantizer-51
  • [DH] tests/ref/fate/vp9-00-quantizer-52
  • [DH] tests/ref/fate/vp9-00-quantizer-53
  • [DH] tests/ref/fate/vp9-00-quantizer-54
  • [DH] tests/ref/fate/vp9-00-quantizer-55
  • [DH] tests/ref/fate/vp9-00-quantizer-56
  • [DH] tests/ref/fate/vp9-00-quantizer-57
  • [DH] tests/ref/fate/vp9-00-quantizer-58
  • [DH] tests/ref/fate/vp9-00-quantizer-59
  • [DH] tests/ref/fate/vp9-00-quantizer-60
  • [DH] tests/ref/fate/vp9-00-quantizer-61
  • [DH] tests/ref/fate/vp9-00-quantizer-62
  • [DH] tests/ref/fate/vp9-00-quantizer-63
  • [DH] tests/ref/fate/vp9-01-sharpness-1
  • [DH] tests/ref/fate/vp9-01-sharpness-2
  • [DH] tests/ref/fate/vp9-01-sharpness-3
  • [DH] tests/ref/fate/vp9-01-sharpness-4
  • [DH] tests/ref/fate/vp9-01-sharpness-5
  • [DH] tests/ref/fate/vp9-01-sharpness-6
  • [DH] tests/ref/fate/vp9-01-sharpness-7
  • [DH] tests/ref/fate/vp9-02-size-08x08
  • [DH] tests/ref/fate/vp9-02-size-08x10
  • [DH] tests/ref/fate/vp9-02-size-08x16
  • [DH] tests/ref/fate/vp9-02-size-08x18
  • [DH] tests/ref/fate/vp9-02-size-08x32
  • [DH] tests/ref/fate/vp9-02-size-08x34
  • [DH] tests/ref/fate/vp9-02-size-08x64
  • [DH] tests/ref/fate/vp9-02-size-08x66
  • [DH] tests/ref/fate/vp9-02-size-10x08
  • [DH] tests/ref/fate/vp9-02-size-10x10
  • [DH] tests/ref/fate/vp9-02-size-10x16
  • [DH] tests/ref/fate/vp9-02-size-10x18
  • [DH] tests/ref/fate/vp9-02-size-10x32
  • [DH] tests/ref/fate/vp9-02-size-10x34
  • [DH] tests/ref/fate/vp9-02-size-10x64
  • [DH] tests/ref/fate/vp9-02-size-10x66
  • [DH] tests/ref/fate/vp9-02-size-16x08
  • [D

• Strange results when converting rgb yuv using ffmpeg in python

  20 avril 2020, par user3569998

  I have JPG images and I am trying to do the following :

  



  

  1. resize the input and save the result into PNG

  


  2. convert PNG images to YUV (for instance yuv444p10le) in AVI container

  


  3. convert AVI back to PNG image.

  


  



  I am using python 3 and ffmpeg Linux version installed on Colab

  



  I printed the difference between resized_png and restored_png. I have values of 255 which doesn't make sense at all.

  



   [[[  0 255   1]
  [  0   0   1]
  [  0 255   1]
  ...
  [  1   0   0]
  [  1   0   0]
  [  2   0   1]]

 [[  0 255   1]
  [  0 255   1]
  [  1   0   0]
  ...
  [  1   0   0]
  [  1   0   0]
  [  1   0   0]]

 [[  0   0   1]
  [  0   0   1]
  [  0   0   1]
  ...
  [  1 255   0]
  [  1 255   1]
  [  1   0   0]]

 ...

 [[255   0   0]
  [255   0   1]
  [255   0   1]
  ...
  [  0   0   0]
  [  0   0   1]
  [255   0   1]]

 [[255   0   1]
  [255   0   1]
  [255   0   1]
  ...
  [  0   0   1]
  [  0   0   1]
  [  0   0   0]]

 [[255   0   1]
  [255   0   1]
  [255   0   1]
  ...
  [255   1   0]
  [255   0   0]
  [255   0   1]]]


  



  input_image = '/content/drive/My Drive/Colab Notebooks/adv_dnn/datasets/im2.jpg'
output_resized = '/content/drive/My Drive/Colab Notebooks/adv_dnn/datasets/im2.png'
folder_path = '/content/drive/My Drive/Colab Notebooks/adv_dnn/datasets/'

#do resize
# code = subprocess.call('cd /usr/bin/ffmpeg',  shell=True)
# print(code)
cmd_resize = ['ffmpeg', '-y', '-i',  input_image,'-vf', 'scale=224:224', output_resized]
process = subprocess.Popen(cmd_resize, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = process.communicate()
print(out)
print(err)

fmt = ['yuv420p', 'yuv420p10le', 'yuv444p', 'yuv444p10le']
for f in fmt:
  cmd2YUV = ['ffmpeg', '-y', '-i', output_resized, '-c:v', 'libx264', '-preset', 'placebo',\
             '-qp', '0', '-x264-params', "keyint=15:no-deblock=1", '-pix_fmt', f, \
             '-sws_flags', 'spline+accurate_rnd+full_chroma_int', \
             '-vf', "colorspace=bt709:iall=bt601-6-625:fast=1", '-color_range', '1', '-colorspace', '1', 
             '-color_primaries', '1', '-color_trc', '1', folder_path+'im2_'+f+'.avi']
  process = subprocess.Popen(cmd2YUV, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  out, err = process.communicate()
  print(out)
  print(err)

  cmd2PNG = ['ffmpeg', '-y', '-i',  folder_path+'im2_'+f+'.avi', '-compression_level', '10', '-pred', 'mixed', \
             '-pix_fmt', 'rgb24', '-sws_flags', '+accurate_rnd+full_chroma_int', \
             folder_path+'im2_'+f+'.png']
  process = subprocess.Popen(cmd2PNG, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  out, err = process.communicate()
  print(out)
  print(err)

im1=pilim.open('/content/drive/My Drive/Colab Notebooks/adv_dnn/datasets/im2.png')
im2=pilim.open('/content/drive/My Drive/Colab Notebooks/adv_dnn/datasets/im2_yuv444p10le.png')
im1_2d = np.asarray(im1)
im2_2d = np.asarray(im2)
print(im2_2d-im1_2d)