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• MSE video fragments [closed]

  21 juin 2024, par Bogdan Rusu

  I am trying to build a Javascript web streammer, which uses MediSource and a buffer.
I append to the buffer every new fragment that is comming, which allows me to stream a video.

  


  To be more in context, its done with MPEG DASH. I have the video init.mp4 file and the m4s fragments.

  


  However, I want to add some videos that are pure mp4 video, and I cannot append them to the buffer, since they are not fragments related to the first stream. I was thinking about converting them to m4s fragment, but I don't understand how to do it. As far as I've read, m4s fragments are mp4 videos without the initial metadata and some other atoms/boxes removed.

  


  Is there a way to convert a mp4 video to one big m4s segment of the same duration and to properly append it to the MediaSource buffer ? Is there a way to manually create a m4s segment from a mp4 video ?

  


  I tried multiple tools such as Bento4 and some ffmpeg commands that converts the mp4 video in a mp4 fragment. But every time I append it to the buffer, the video stops and cannot read further. Especially with chrome.

  


  With bento4, after I mp4fragment, chrome can't seem to play the second fragment and the player always stops.

  


• .exe file, works different than .py file

  29 août 2024, par r_b

  I've made the YouTube Dowbloader App. Everything is working properly (run in PyCharm), but when I try to make it into an executable with pyinstaller, it does not work.

  


  This is the link to the repo :

  


  YouTube Downloader

  


  Command for making exe file :
pyinstaller project.spec

  


  project.spec file :

  


  # project.spec
# -*- mode: python ; coding: utf-8 -*-

block_cipher = None

a = Analysis(
    ['gui.py'],
    pathex=['.'],
    binaries=[],
    datas=[('static_files/*', 'static_files')],
    hiddenimports=[],
    hookspath=[],
    runtime_hooks=[],
    excludes=[],
    win_no_prefer_redirects=False,
    win_private_assemblies=False,
    cipher=block_cipher,
)
pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)

exe = EXE(
    pyz,
    a.scripts,
    [],
    exclude_binaries=True,
    name='YouTube Downloader',
    debug=False,
    bootloader_ignore_signals=False,
    strip=False,
    upx=True,
    upx_exclude=[],
    runtime_tmpdir=None,
    console=False,
    icon='static_files/logo.ico'
)
coll = COLLECT(
    exe,
    a.binaries,
    a.zipfiles,
    a.datas,
    strip=False,
    upx=True,
    upx_exclude=[],
    name='YouTube Downloader'
)

app = BUNDLE(
    coll,
    name='YouTube Downloader',
    icon='static_files/logo.ico',
    bundle_identifier=None
)


  


  The file structure :

  


  project/
├── backend.py
├── gui.py
├── temp_mp3 # temporary mp3 for Audio player
├── static_files/
│   ├── icon.ico
│   ├── image1.png
│   ├── image2.png
│   └── setup.json  # setup.json file
└── project.spec


  


  Search block diagram :
Search block diagram

  


  After searching and fetching the YouTube URL, the app downloads an MP3 file (in temp_mp3) for the audio player section.

  


  And here is the difference between .exe and the .py, when I run .exe the APP downloads the audio segment from the URL in .webm format and stops there. Even if the format is different, it should be converted to MP3 (in PyCharm does).

  


  Find possible problem with moviepy/ffmpeg.exe (library for converting files).

  


  project.spec

  


  a = Analysis(
    ['gui.py'],
    pathex=['.'],
    binaries=[('C:\\path\\to\\ffmpeg\\bin\\ffmpeg.exe', 'ffmpeg')],
    datas=[('static_files/*', 'static_files')],


  


  Added binaries => path to ffmpeg.exe , but it still doesn't work.

  


• Revision 33048 : Un flv n’a pas forcément de vidéo associée ... on écrit les metadatas ...

  18 novembre 2009, par kent1@… — Log

  Un flv n’a pas forcément de vidéo associée ... on écrit les metadatas avant pour être sûr