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• Introducing WebM, an open web media project

  19 mai 2010, par noreply@blogger.com (christosap)

  A key factor in the web’s success is that its core technologies such as HTML, HTTP, TCP/IP, etc. are open and freely implementable. Though video is also now core to the web experience, there is unfortunately no open and free video format that is on par with the leading commercial choices. To that end, we are excited to introduce WebM, a broadly-backed community effort to develop a world-class media format for the open web.

  WebM includes :
  

  • VP8, a high-quality video codec we are releasing today under a BSD-style, royalty-free license
  • Vorbis, an already open source and broadly implemented audio codec
  • a container format based on a subset of the Matroska media container

  The team that created VP8 have been pioneers in video codec development for over a decade. VP8 delivers high quality video while efficiently adapting to the varying processing and bandwidth conditions found on today’s broad range of web-connected devices. VP8’s efficient bandwidth usage will mean lower serving costs for content publishers and high quality video for end-users. The codec’s relative simplicity makes it easy to integrate into existing environments and requires less manual tuning to produce high quality results. These existing attributes and the rapid innovation we expect through the open-development process make VP8 well suited for the unique requirements of video on the web.

  A developer preview of WebM and VP8, including source code, specs, and encoding tools is available today at www.webmproject.org.

  We want to thank the many industry leaders and web community members who are collaborating on the development of WebM and integrating it into their products. Check out what Mozilla, Opera, Google Chrome, Adobe, and many others below have to say about the importance of WebM to the future of web video.

  
  

  AMD

  ARM

  Brightcove

  Broadcom

  Collabora

  Digital Rapids

  Encoding.com

  Grab Networks

  iLinc

  INLET

  Kaltura

  Logitech

  MIPS

  Nvidia

  Ooyala

  Qualcomm

  Skype

  Sorenson

  Telestream
  

  Texas Instruments

  Verisilicon

  ViewCast

  Wildform

  
  

  Posted by Jeremy Doig, Engineering Director of video and Mike Jazayeri, Group Product Manager, Google

  

• YouTube's HD Video Streaming Server Technology ?

  30 septembre 2013, par bgentry

  Lately I've been researching different methods for streaming MP4s to the browser. Flash Media Server is an obvious choice here (using Cloudfront), and most solutions I've seen use the RTMP protocol.

  However, I spent some time on YouTube with Firebug and Chrome debugger figuring out how their streaming worked and I discovered some interesting differences between some of their videos and quality rates.

  My two sample videos are A and B. A is available up to 480p and B is available up to 1080p. For both videos, all rates up to 480p are served in an FLV container with H.264 video and AAC audio, over HTTP. What's interesting here is that if you have not yet downloaded (cached) the entire video, and you try to skip forward to an uncached part of the video, a new request will be made with a 'begin' parameter equal to the target offset in milliseconds. Example from Video A at 480p :

  http://v11.lscache8.c.youtube.com/videoplayback?ip=0.0.0.0&sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Calgorithm%2Cburst%2Cfactor%2Coc%3AU0dWTldQVF9FSkNNNl9PSlhJ&fexp=904806%2C902906%2C903711&algorithm=throttle-factor&itag=35&ipbits=0&burst=40&sver=3&expire=1279756800&key=yt1&signature=D2D704D63C242CF187CAA5B5D5BAFB8DFACAC5FF.39180C01559C976717B651A7EB1D0C6249231EB7&factor=1.25&id=8568eb3135971f6f&begin=111863
  
  
  
  Response Headers:
  
  Cache-Control:public,max-age=23472
  
  Connection:close
  
  Content-Length:14320637
  
  Content-Type:video/x-flv
  
  Date:Wed, 21 Jul 2010 17:23:48 GMT
  
  Expires:Wed, 21 Jul 2010 23:55:00 GMT
  
  Last-Modified:Wed, 19 May 2010 12:31:41 GMT
  
  Server:gvs 1.0
  
  X-Content-Type-Options:nosniff

  The file returned by this URL is a fully valid FLV containing only the portion of the video after the requested offset.

  I did the same kind of test on the higher resolution versions of Video B. At 720p and 1080p, YouTube will return a video in an MP4 container, also with H.264 video and AAC audio. What's impressive to me is that their server takes the same type of offset for an MP4 video (via the 'begin' parameter) and returns a valid, streamable MP4 (moov atom at the front of the file with correct offsets) that also only includes the requested portion of the video.

  So, how does YouTube do this ? How do they generate the FLV or MP4 container on the fly with the correct headers and only the desired segment of the requested video ? I know this can be accomplished using FFMPEG to seek to the desired start point and the qt-faststart script to reposition the moov atom to the front of the stream, but it seems like this would be too slow to handle on-demand for millions of YouTube viewers.

  Ideas ?

  Thanks in advance !

  Footnote : I am not allowed to include more than 1 link at this point, so here is Video A's URL : http:// www.youtube .com/watch ?v=hWjrMTWXH28 "Video available up to 480p"

• ffmpeg streaming fails to stream over internet to twitch.tv

  15 avril 2021, par josh joyer

  I did already streaming to twitch.tv with command :

  


  ffmpeg -stream_loop -1 -i 9stream.wav 
-f dshow -i audio="mic"
 -f dshow -i audio="realTek" 
-filter_complex "[0:a]volume=2[a0];[1:a]volume=1.5[a1];[2:a]volume=1.5[a2];[a0][a1][a2]amix=inputs=3"
 -f dshow -i video="USB2.0 PC CAMERA" 
-ac 1 -ar 11025 -acodec libmp3lame -c:v libx264 -b:v 100k -f flv -s 80x120 
rtmp://live.twitch.tv/app/live_streamingKey


  


  It was most advanced command that I used to stream online.

  


  (I do not know how to make enter in here so I put double enter)

  


  9stream.wav was played in loop as background music

  


  microphone was added

  


  stereoMix named realTek was the playback of system sounds

  


  volume was adjusted and all sounds mixed into one stream

  


  camera view was added

  


  THEN network flow was reduced by sending only one channel with low frequency of 11025 with lowest

  


  possible data size made by mp3 encoder and libx264 was used to encode video in png files.

  


  It was working fine SO I decided to make final version

  


  (this one worked with all sounds(background music,microphone,system sounds) and camera)

  


  Final version was about adding screen view and logo.

  


  I succeded writing everything to disc with command :

  


  ffmpeg 
-stream_loop -1 -i 9stream.wav 
-f dshow -i audio="mic" 
-f dshow -i audio="stereoMixRealtek" 
-i camera.png 
-f gdigrab -framerate 1 -i desktop 
-f dshow -framerate 15 -i video="USB2.0 PC CAMERA" 
-filter_complex "[0:a]volume=2[a0];[1:a]volume=1.5[a1];[2:a]volume=1.5[a2];
[a0][a1][a2]amix=inputs=3[aMix];
[4:v]scale=200:-1[v4];[5:v]scale=50:-1[v5];
[v4][v5]overlay=(W-w)-5:(H-h)-5[vScreenCam];
[vScreenCam][3:v]overlay=5:5[v]" 
-map "[v]" -map "[aMix]" -ac 1 -ar 11025 -c:a libmp3lame -r 1 -c:v libx264 output.mkv


  


  That was

  


  background music

  


  microphone

  


  system sounds

  


  logo picture

  


  screen view

  


  camera

  


  adjusting sound volume

  


  mixing sounds

  


  reducing size of screen view and camera view

  


  overlaying reduced camera view over reduced screen view

  


  adding logo

  


  choosing final view, final mixed sounds,

  


  reducing data size to one channel, reducing sample frequency,

  


  choosing mp3 codec to reduce final data size,

  


  choosing minimal framerate of one per second to reduce data size

  


  choosing libx264 codec for video.

  


  THEN I tried to use final command for network streaming with slight modification :

  


  ffmpeg 
-stream_loop -1 -i 9stream.wav 
-f dshow -i audio="mic" 
-f dshow -i audio="stereo mix" 
-i camera.png 
-f gdigrab -framerate 1 -i desktop 
-f dshow -framerate 15 -i video="USB2.0 PC CAMERA" 
-filter_complex "[0:a]volume=2[a0];[1:a]volume=1.5[a1];[2:a]volume=1.5[a2];
[a0][a1][a2]amix=inputs=3[aMix];
[4:v]scale=200:-1[v4];[5:v]scale=50:-1[v5];
[v4][v5]overlay=(W-w)-5:(H-h)-5[vScreenCam];[vScreenCam][3:v]overlay=5:5[v]" 
-map "[v]" -map "[aMix]" 
-ac 1 -ar 11025 -c:a libmp3lame -r 1 -c:v libx264 -b:v 100k -b:a 10k -f flv rtmp://live.twitch.tv/app/live_streamingKey


  


  I added parameter
-b:v 100k to reduce video flow
-b:a 10k to reduce sound flow
-f flv to be good for twitch.tv otherwise it would not accept stream

  


  BUT ffmpeg is always stopping sending data with message like this :

  


  testosteron_@testosteron MINGW64 ~/Desktop/2021b/magisterka/ScreenRecorderXi/ScreenRecorderXi/bin
$ cmd
Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. Wszelkie prawa zastrze▒one.

C:\Users\testosteron_\Desktop\2021b\magisterka\ScreenRecorderXi\ScreenRecorderXi\bin>ffmpeg -stream_loop -1 -i 9stream.wav -f dshow -i audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{5B4DB0B5-B645-4AFA-930D-4710AAF753DB}" -f dshow -i audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{ADECEC1D-C3CC-4BAE-8516-752251B8B63F}" -i camera.png -f gdigrab -framerate 1 -i desktop -f dshow -framerate 15 -i video="USB2.0 PC CAMERA" -filter_complex "[0:a]volume=2[a0];[1:a]volume=1.5[a1];[2:a]volume=1.5[a2];[a0][a1][a2]amix=inputs=3[aMix];[4:v]scale=200:-1[v4];[5:v]scale=50:-1[v5];[v4][v5]overlay=(W-w)-5:(H-h)-5[vScreenCam];[vScreenCam][3:v]overlay=5:5[v]" -map "[v]" -map "[aMix]" -ac 1 -ar 11025 -c:a libmp3lame -r 1 -c:v libx264 -b:v 100k -b:a 10k -f flv rtmp://live.twitch.tv/app/live_674912043_oAwGnACTndHyeZnlA6scLegm8gaxwf
ffmpeg -stream_loop -1 -i 9stream.wav -f dshow -i audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{5B4DB0B5-B645-4AFA-930D-4710AAF753DB}" -f dshow -i audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{ADECEC1D-C3CC-4BAE-8516-752251B8B63F}" -i camera.png -f gdigrab -framerate 1 -i desktop -f dshow -framerate 15 -i video="USB2.0 PC CAMERA" -filter_complex "[0:a]volume=2[a0];[1:a]volume=1.5[a1];[2:a]volume=1.5[a2];[a0][a1][a2]amix=inputs=3[aMix];[4:v]scale=200:-1[v4];[5:v]scale=50:-1[v5];[v4][v5]overlay=(W-w)-5:(H-h)-5[vScreenCam];[vScreenCam][3:v]overlay=5:5[v]" -map "[v]" -map "[aMix]" -ac 1 -ar 11025 -c:a libmp3lame -r 1 -c:v libx264 -b:v 100k -b:a 10k -f flv rtmp://live.twitch.tv/app/live_674912043_oAwGnACTndHyeZnlA6scLegm8gaxwf
ffmpeg version git-2020-08-02-b48397e Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 10.2.1 (GCC) 20200726
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libgsm --enable-librav1e --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 57.100 / 56. 57.100
  libavcodec     58. 99.100 / 58. 99.100
  libavformat    58. 49.100 / 58. 49.100
  libavdevice    58. 11.101 / 58. 11.101
  libavfilter     7. 87.100 /  7. 87.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from '9stream.wav':
  Metadata:
    encoder         : Lavf58.49.100
  Duration: 00:00:13.48, bitrate: 1411 kb/s
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s
Guessed Channel Layout for Input Stream #1.0 : stereo
Input #1, dshow, from 'audio=@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{5B4DB0B5-B645-4AFA-930D-4710AAF753DB}':
  Duration: N/A, start: 209609.948000, bitrate: 1411 kb/s
    Stream #1:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
Guessed Channel Layout for Input Stream #2.0 : stereo
Input #2, dshow, from 'audio=@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{ADECEC1D-C3CC-4BAE-8516-752251B8B63F}':
  Duration: N/A, start: 209610.502000, bitrate: 1411 kb/s
    Stream #2:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
Input #3, png_pipe, from 'camera.png':
  Duration: N/A, bitrate: N/A
    Stream #3:0: Video: png, rgba(pc), 32x32 [SAR 3779:3779 DAR 1:1], 25 tbr, 25 tbn, 25 tbc
[gdigrab @ 0000009a3f019700] Capturing whole desktop as 1280x1024x32 at (0,0)
[gdigrab @ 0000009a3f019700] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #4, gdigrab, from 'desktop':
  Duration: N/A, start: 1618506176.140738, bitrate: 41943 kb/s
    Stream #4:0: Video: bmp, bgra, 1280x1024, 41943 kb/s, 1 fps, 1000k tbr, 1000k tbn, 1000k tbc
Input #5, dshow, from 'video=USB2.0 PC CAMERA':
  Duration: N/A, start: 209613.583000, bitrate: N/A
    Stream #5:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 15 fps, 15 tbr, 10000k tbn, 10000k tbc
[dshow @ 0000009a3f034900] real-time buffer [USB2.0 PC CAMERA] [video input] too full or near too full (101% of size: 3041280 [rtbufsize parameter])! frame dropped!
    Last message repeated 9 times
Stream mapping:
  Stream #0:0 (pcm_s16le) -> volume
  Stream #1:0 (pcm_s16le) -> volume
  Stream #2:0 (pcm_s16le) -> volume
  Stream #3:0 (png) -> overlay:overlay
  Stream #4:0 (bmp) -> scale
  Stream #5:0 (rawvideo) -> scale
  overlay -> Stream #0:0 (libx264)
  amix -> Stream #0:1 (libmp3lame)
Press [q] to stop, [?] for help
[dshow @ 0000009a3efd5b80] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
[dshow @ 0000009a406fb280] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
[libx264 @ 0000009a4082ddc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64 SlowShuffle
[libx264 @ 0000009a4082ddc0] profile High, level 1.1, 4:2:0, 8-bit
[libx264 @ 0000009a4082ddc0] 264 - core 161 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=5 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=1 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=100 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, flv, to 'rtmp://live.twitch.tv/app/live_streamingKey':
  Metadata:
    encoder         : Lavf58.49.100
    Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p(progressive), 200x160, q=-1--1, 100 kb/s, 1 fps, 1k tbn, 1 tbc (default)
    Metadata:
      encoder         : Lavc58.99.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/100000 buffer size: 0 vbv_delay: N/A
    Stream #0:1: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 11025 Hz, mono, fltp, 10 kb/s (default)
    Metadata:
      encoder         : Lavc58.99.100 libmp3lame
frame=    1 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   frame=    1 fps=1.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   frame=    1 fps=0.7 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   frame=    3 fps=1.5 q=0.0 size=       0kB time=00:00:03.08 bitrate=   1.0kbits/sframe=    4 fps=1.6 q=0.0 size=       0kB time=00:00:03.66 bitrate=   0.8kbits/sframe=    4 fps=1.3 q=0.0 size=       0kB time=00:00:03.66 bitrate=   0.8kbits/sframe=    5 fps=1.4 q=0.0 size=       0kB time=00:00:04.65 bitrate=   0.7kbits/sframe=    5 fps=1.2 q=0.0 size=       0kB time=00:00:04.65 bitrate=   0.7kbits/sframe=    6 fps=1.3 q=0.0 size=       0kB time=00:00:05.64 bitrate=   0.5kbits/sframe=    6 fps=1.2 q=0.0 size=       0kB time=00:00:05.64 bitrate=   0.5kbits/sframe=    7 fps=1.3 q=0.0 size=       0kB time=00:00:06.64 bitrate=   0.5kbits/sframe=    7 fps=1.2 q=0.0 size=       0kB time=00:00:06.64 bitrate=   0.5kbits/sframe=    8 fps=1.2 q=0.0 size=       0kB time=00:00:07.58 bitrate=   0.4kbits/sframe=    8 fps=1.1 q=0.0 size=       0kB time=00:00:07.58 bitrate=   0.4kbits/sframe=    9 fps=1.2 q=0.0 size=       0kB time=00:00:08.57 bitrate=   0.4kbits/sframe=    9 fps=1.1 q=0.0 size=       0kB time=00:00:08.57 bitrate=   0.4kbits/sframe=   10 fps=1.2 q=0.0 size=       0kB time=00:00:09.56 bitrate=   0.3kbits/sframe=   10 fps=1.1 q=0.0 size=       0kB time=00:00:09.56 bitrate=   0.3kbits/sframe=   11 fps=1.1 q=0.0 size=       1kB time=00:00:10.55 bitrate=   0.9kbits/sframe=   11 fps=1.1 q=0.0 size=       1kB time=00:00:10.55 bitrate=   0.9kbits/sframe=   12 fps=1.1 q=0.0 size=       2kB time=00:00:11.55 bitrate=   1.7kbits/sframe=   12 fps=1.1 q=0.0 size=       2kB time=00:00:11.55 bitrate=   1.7kbits/sframe=   13 fps=1.1 q=0.0 size=       4kB time=00:00:12.59 bitrate=   2.5kbits/sframe=   13 fps=1.1 q=0.0 size=       4kB time=00:00:12.59 bitrate=   2.5kbits/sframe=   14 fps=1.1 q=0.0 size=       5kB time=00:00:13.58 bitrate=   3.0kbits/sframe=   14 fps=1.1 q=0.0 size=       5kB time=00:00:13.58 bitrate=   3.0kbits/sframe=   15 fps=1.1 q=0.0 size=       6kB time=00:00:14.58 bitrate=   3.5kbits/sframe=   15 fps=1.1 q=0.0 size=       6kB time=00:00:14.58 bitrate=   3.5kbits/sframe=   16 fps=1.1 q=0.0 size=       8kB time=00:00:15.57 bitrate=   4.0kbits/sframe=   16 fps=1.1 q=0.0 size=       8kB time=00:00:15.57 bitrate=   4.0kbits/sframe=   17 fps=1.1 q=0.0 size=       9kB time=00:00:16.56 bitrate=   4.4kbits/sframe=   17 fps=1.1 q=0.0 size=       9kB time=00:00:16.56 bitrate=   4.4kbits/sframe=   18 fps=1.1 q=0.0 size=      10kB time=00:00:17.55 bitrate=   4.7kbits/sframe=   18 fps=1.0 q=0.0 size=      10kB time=00:00:17.55 bitrate=   4.7kbits/sframe=   19 fps=1.1 q=0.0 size=      11kB time=00:00:18.55 bitrate=   5.0kbits/sframe=   19 fps=1.0 q=0.0 size=      11kB time=00:00:18.55 bitrate=   5.0kbits/sframe=   20 fps=1.1 q=0.0 size=      13kB time=00:00:19.54 bitrate=   5.3kbits/sframe=   20 fps=1.0 q=0.0 size=      13kB time=00:00:19.54 bitrate=   5.3kbits/sframe=   21 fps=1.1 q=0.0 size=      14kB time=00:00:20.58 bitrate=   5.6kbits/sframe=   21 fps=1.0 q=0.0 size=      14kB time=00:00:20.58 bitrate=   5.6kbits/sframe=   22 fps=1.1 q=0.0 size=      15kB time=00:00:21.58 bitrate=   5.8kbits/sframe=   22 fps=1.0 q=0.0 size=      15kB time=00:00:21.58 bitrate=   5.8kbits/sframe=   23 fps=1.1 q=0.0 size=      17kB time=00:00:22.57 bitrate=   6.0kbits/sframe=   23 fps=1.0 q=0.0 size=      17kB time=00:00:22.57 bitrate=   6.0kbits/sframe=   24 fps=1.1 q=0.0 size=      18kB time=00:00:23.56 bitrate=   6.2kbits/sframe=   24 fps=1.0 q=0.0 size=      18kB time=00:00:23.56 bitrate=   6.2kbits/sframe=   25 fps=1.1 q=0.0 size=      19kB time=00:00:24.56 bitrate=   6.4kbits/sframe=   25 fps=1.0 q=0.0 size=      19kB time=00:00:24.56 bitrate=   6.4kbits/sframe=   26 fps=1.1 q=0.0 size=      20kB time=00:00:25.55 bitrate=   6.5kbits/sframe=   26 fps=1.0 q=0.0 size=      20kB time=00:00:25.55 bitrate=   6.5kbits/sframe=   27 fps=1.0 q=0.0 size=      22kB time=00:00:26.54 bitrate=   6.7kbits/sframe=   27 fps=1.0 q=0.0 size=      22kB time=00:00:26.54 bitrate=   6.7kbits/sframe=   28 fps=1.0 q=0.0 size=      23kB time=00:00:27.58 bitrate=   6.8kbits/sframe=   28 fps=1.0 q=0.0 size=      23kB time=00:00:27.58 bitrate=   6.8kbits/sframe=   29 fps=1.0 q=0.0 size=      24kB time=00:00:28.58 bitrate=   6.9kbits/sframe=   30 fps=1.1 q=0.0 size=      25kB time=00:00:29.00 bitrate=   7.0kbits/sframe=   30 fps=1.0 q=0.0 size=      25kB time=00:00:29.57 bitrate=   7.0kbits/sframe=   30 fps=1.0 q=0.0 size=      25kB time=00:00:29.57 bitrate=   7.0kbits/sframe=   31 fps=1.0 q=0.0 size=      27kB time=00:00:30.56 bitrate=   7.2kbits/sframe=   32 fps=1.1 q=0.0 size=      27kB time=00:00:30.56 bitrate=   7.2kbits/sframe=   32 fps=1.0 q=0.0 size=      28kB time=00:00:31.56 bitrate=   7.3kbits/sframe=   33 fps=1.1 q=0.0 size=      29kB time=00:00:32.55 bitrate=   7.4kbits/sframe=   33 fps=1.0 q=0.0 size=      29kB time=00:00:32.55 bitrate=   7.4kbits/sframe=   33 fps=1.0 q=0.0 size=      29kB time=00:00:32.55 bitrate=   7.4kbits/sframe=   34 fps=1.0 q=0.0 size=      31kB time=00:00:33.54 bitrate=   7.4kbits/sframe=   35 fps=1.1 q=0.0 size=      31kB time=00:00:33.96 bitrate=   7.5kbits/sframe=   35 fps=1.0 q=0.0 size=      32kB time=00:00:34.53 bitrate=   7.5kbits/sframe=   36 fps=1.0 q=0.0 size=      33kB time=00:00:35.58 bitrate=   7.6kbits/sframe=   36 fps=1.0 q=0.0 size=      33kB time=00:00:35.58 bitrate=   7.6kbits/sframe=   36 fps=1.0 q=0.0 size=      33kB time=00:00:35.58 bitrate=   7.6kbits/sframe=   37 fps=1.0 q=0.0 size=      34kB time=00:00:36.57 bitrate=   7.7kbits/sframe=   38 fps=1.0 q=0.0 size=      36kB time=00:00:37.56 bitrate=   7.8kbits/sframe=   38 fps=1.0 q=0.0 size=      36kB time=00:00:37.56 bitrate=   7.8kbits/sframe=   39 fps=1.0 q=0.0 size=      37kB time=00:00:38.56 bitrate=   7.8kbits/sframe=   39 fps=1.0 q=0.0 size=      37kB time=00:00:38.56 bitrate=   7.8kbits/sframe=   40 fps=1.0 q=0.0 size=      38kB time=00:00:39.55 bitrate=   7.9kbits/sframe=   40 fps=1.0 q=0.0 size=      38kB time=00:00:39.55 bitrate=   7.9kbits/sframe=   41 fps=1.0 q=0.0 size=      39kB time=00:00:40.54 bitrate=   8.0kbits/sframe=   41 fps=1.0 q=0.0 size=      39kB time=00:00:40.54 bitrate=   8.0kbits/sframe=   42 fps=1.0 q=0.0 size=      41kB time=00:00:41.59 bitrate=   8.0kbits/sframe=   42 fps=1.0 q=0.0 size=      41kB time=00:00:41.59 bitrate=   8.0kbits/sframe=   43 fps=1.0 q=0.0 size=      42kB time=00:00:42.58 bitrate=   8.1kbits/sframe=   43 fps=1.0 q=0.0 size=      42kB time=00:00:42.58 bitrate=   8.1kbits/sframe=   44 fps=1.0 q=0.0 size=      43kB time=00:00:43.57 bitrate=   8.1kbits/sframe=   44 fps=1.0 q=0.0 size=      43kB time=00:00:43.57 bitrate=   8.1kbits/sframe=   45 fps=1.0 q=0.0 size=      45kB time=00:00:44.56 bitrate=   8.2kbits/sframe=   45 fps=1.0 q=0.0 size=      45kB time=00:00:44.56 bitrate=   8.2kbits/sframe=   46 fps=1.0 q=0.0 size=      46kB time=00:00:45.56 bitrate=   8.2kbits/sframe=   46 fps=1.0 q=0.0 size=      46kB time=00:00:45.56 bitrate=   8.2kbits/sframe=   47 fps=1.0 q=0.0 size=      47kB time=00:00:46.55 bitrate=   8.3kbits/sframe=   47 fps=1.0 q=0.0 size=      47kB time=00:00:46.55 bitrate=   8.3kbits/sframe=   48 fps=1.0 q=0.0 size=      48kB time=00:00:47.54 bitrate=   8.3kbits/sframe=   48 fps=1.0 q=0.0 size=      48kB time=00:00:47.54 bitrate=   8.3kbits/sframe=   49 fps=1.0 q=0.0 size=      50kB time=00:00:48.59 bitrate=   8.4kbits/sframe=   49 fps=1.0 q=0.0 size=      50kB time=00:00:48.59 bitrate=   8.4kbits/s[flv @ 0000009a40865940] Packets poorly interleaved, failed to avoid negative timestamp -3900 in stream 0.
Try -max_interleave_delta 0 as a possible workaround.
[flv @ 0000009a40865940] Packets are not in the proper order with respect to DTS
av_interleaved_write_frame(): Invalid argument
[flv @ 0000009a40865940] Failed to update header with correct duration.
[flv @ 0000009a40865940] Failed to update header with correct filesize.
frame=   50 fps=1.0 q=6.0 Lsize=      63kB time=00:00:49.11 bitrate=  10.5kbits/s speed=   1x
video:27kB audio:48kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[libx264 @ 0000009a4082ddc0] frame I:1     Avg QP: 0.56  size: 27197
[libx264 @ 0000009a4082ddc0] frame P:15    Avg QP: 0.76  size:  2567
[libx264 @ 0000009a4082ddc0] frame B:34    Avg QP: 3.98  size:  1481
[libx264 @ 0000009a4082ddc0] consecutive B-frames:  8.0%  0.0% 12.0% 80.0%
[libx264 @ 0000009a4082ddc0] mb I  I16..4: 13.1% 13.8% 73.1%
[libx264 @ 0000009a4082ddc0] mb P  I16..4:  0.0%  0.1%  0.8%  P16..4: 17.5%  5.9%  4.2%  0.0%  0.0%    skip:71.5%
[libx264 @ 0000009a4082ddc0] mb B  I16..4:  0.0%  0.0%  0.3%  B16..8: 12.1%  4.2%  2.4%  direct: 6.3%  skip:74.7%  L0:42.9% L1:41.8% BI:15.4%
[libx264 @ 0000009a4082ddc0] final ratefactor: -7.50
[libx264 @ 0000009a4082ddc0] 8x8 transform intra:12.3% inter:14.5%
[libx264 @ 0000009a4082ddc0] coded y,uvDC,uvAC intra: 95.2% 96.9% 96.9% inter: 16.0% 14.9% 14.8%
[libx264 @ 0000009a4082ddc0] i16 v,h,dc,p: 26% 32% 32% 11%
[libx264 @ 0000009a4082ddc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  8% 40% 14%  8%  1%  2%  1%  1% 25%
[libx264 @ 0000009a4082ddc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 15% 45%  7%  4%  5%  3%  7%  3%  9%
[libx264 @ 0000009a4082ddc0] i8c dc,h,v,p: 36% 40% 18%  6%
[libx264 @ 0000009a4082ddc0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000009a4082ddc0] ref P L0: 65.2%  2.2% 19.9% 12.7%
[libx264 @ 0000009a4082ddc0] ref B L0: 71.8% 23.0%  5.2%
[libx264 @ 0000009a4082ddc0] ref B L1: 88.2% 11.8%
[libx264 @ 0000009a4082ddc0] kb/s:17.86
Conversion failed!


  


  Main message from above was :

  


  [flv @ 0000009a40865940] Packets poorly interleaved, failed to avoid negative timestamp -3900 in stream 0.


  


  It was problem to stream 0 so it was mixed sounds stream BUT earlier it was fine with mixing

  


  and sending mix over internet BUT after I added screen view and scaling it failed to work.

  


  What is problem ?

  


  How to fix it ?

  


  Since I was able to do this to stream to disc I would assume that

  


  computer processing power is enough. Since I was able to stream over internet mixed sounds I

  


  would assume that it is not problem here. So the problem must be with sending

  


  screen view. BUT I put framerate 1 per second and downsized its resolution. I compressed

  


  sounds as much as I could. I added -b:a and -b:v commands to reduce network flow.

  


  WHAT ELSE COULD I DO TO FIX IT ?