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• Stream rtsp to Html5 video tag

  19 mai 2021, par Jim Lin

  I have a camera with a RTSP stream
(Example : rtsp ://admin:password@ip:554/Streaming/Channels/101),
now I want to stream it using HTML5 without any plugin.

  


  I tried some solutions using http-flv protocol :

  


  1.Nginx-http-flv-module + FFmpeg + flv.js

  


  2.Nodejs + FFmpeg + flv.js

  


  ffmpeg command : rtsp ://admin:password@ip:554/Streaming/Channels/101-vcodec copy -an -f flv -s 800x600 rtmp ://localhost:1935/myapp/test

  


  ffmpeg log

  


  The problem is that latency is high bettween 5s-8s, if there is any solution to reduce latency between 1s-2s.

  


  PS:flv.js is an HTML5 Flash Video (FLV) Player written in pure JavaScript without Flash. flv.js

  


• Pyinstaller does not include ffmpeg.exe and ffprobe.exe

  11 mars 2021, par lorenzotarquini

  I'm making a simple mp3 downloader using youtube-dl. During my tests with python, everything works, I only had a problem when I saw an error that said 'ffprobe/avprobe and ffmpeg/avconv not found, please install one', solved including ffmpeg.exe and ffprobe.exe in Scripts folder but then i wrote the exe file with pyinstaller, and i got the same error i found before, IDK how to solve it, can someone help me ?. this is the spec file generated :

  


  # -*- mode: python ; coding: utf-8 -*-

block_cipher = None


a = Analysis(['..\\..\\thedownloader_V1.py'],
             pathex=['D:\\Archivio\\Projects\\Python\\MP3_downloader\\venv\\Scripts'],
             binaries=[],
             datas=[],
             hiddenimports=[],
             hookspath=[],
             runtime_hooks=[],
             excludes=[],
             win_no_prefer_redirects=False,
             win_private_assemblies=False,
             cipher=block_cipher,
             noarchive=False)
pyz = PYZ(a.pure, a.zipped_data,
             cipher=block_cipher)
exe = EXE(pyz,
          a.scripts,
          a.binaries,
          a.zipfiles,
          a.datas,
          [],
          name='thedownloader_V1',
          debug=False,
          bootloader_ignore_signals=False,
          strip=False,
          upx=True,
          upx_exclude=[],
          runtime_tmpdir=None,
          console=True )


  


• ffmpeg convert white color to alpha

  11 janvier 2021, par tony

  Hello i took a picture with my camera :a drawing of a square frame on a white paper ; i'm trying to convert the white to transparent and keep the black color frame.

  


  So i started making 1 palette with only 2 colors to make the colors uniform and 1 palette to add the transparency

  


  ffmpeg -f lavfi -i "color=color=white:100x100" -f lavfi -i "color=color=black:100x100" -filter_complex "[0][1]hstack" -frames:v 1 blackwhite.png`
ffmpeg -i blackwhite.png -filter_complex "[0]split[a][b];[a]palettegen[pal1];[b]palettegen=reserve_transparent=on:transparency_color=white[pal2]" -map [pal1] palette1.png -map [pal2] palette2.png


  


  then i mapped the image png of the frame to convert the white to transparent and overlayed the result to a red background

  


  ffmpeg -i image.png -i palette1.png -i palette2.png -i background.png -filter_complex "[0:v][1:v]paletteuse=dither=bayer[a],[a]split[a1][a2];[a1][2:v]paletteuse=alpha_threshold=128[c];[3:v][c]overlay[d]" -map [a2] -c:v png out.png -map [d] -c:v png out1.png


  


  the png mapped to the first palette (as a test) comes as it should be, pure black and white,the second comes with no transparency at all and covers the background
what am i doing wrong ?