mp4 , avi c'est un conteneur. Donne les codecs utilisés.
Chez moi, j'ai des vidéos en mp4 et pas de soucis. J'ai lu un DVD acheté dans le commerce avec ses protections (j'ai bien sûr installé libdvdcss2).
alors ce n'est pas un problème du système, il doit manquer des paquets.
Je redonne les paquets vlc et gstreamer installés chez moi :
S | Name | Summary | Type
--+---------------------+--------------------------------------------------+-------
i | libvlc5 | Shared code for the VLC media player program | paquet
i | libvlccore9 | Shared code for the VLC media player program | paquet
i | vlc | Graphical media player | paquet
i | vlc-codec-gstreamer | GStreamer integration for the VLC media player | paquet
i | vlc-lang | Translations for package vlc | paquet
i | vlc-noX | VLC without X dependencies | paquet
i | vlc-qt | Qt interface for the VLC media player | paquet
i | vlc-vdpau | Additional vdpau codecs for the VLC media player | paquet
S | Name | Summary | Type
---+-----------------------------------+-----------------------------------------------------------------+-------
i | gstreamer | Streaming-Media Framework Runtime | paquet
i | gstreamer-lang | Translations for package gstreamer | paquet
i | gstreamer-libnice | GStreamer plugin for the Interactive Connectivity Establishment | paquet
i+ | gstreamer-plugin-openh264 | Gstreamer openh264 plugin | paquet
i+ | gstreamer-plugin-pipewire | Gstreamer Plugin for PipeWire | paquet
i+ | gstreamer-plugins-bad | GStreamer Streaming-Media Framework Plug-Ins | paquet
i+ | gstreamer-plugins-bad-lang | Translations for package gstreamer-plugins-bad | paquet
i | gstreamer-plugins-base | GStreamer Streaming-Media Framework Plug-Ins | paquet
i | gstreamer-plugins-base-lang | Translations for package gstreamer-plugins-base | paquet
i | gstreamer-plugins-farstream | GStreamer Plug-Ins for videoconferencing | paquet
i | gstreamer-plugins-good | GStreamer Streaming-Media Framework Plug-Ins | paquet
i | gstreamer-plugins-good-gtk | Gtksink plugin for gstreamer-plugins-good | paquet
i | gstreamer-plugins-good-lang | Translations for package gstreamer-plugins-good | paquet
i+ | gstreamer-plugins-libav | A ffmpeg/libav plugin for GStreamer | paquet
i+ | gstreamer-plugins-ugly | GStreamer Streaming-Media Framework Plug-Ins | paquet
i+ | gstreamer-plugins-ugly-lang | Translations for package gstreamer-plugins-ugly | paquet
i | gstreamer-plugins-vaapi | Gstreamer VA-API plugins | paquet
i | libgstreamer-1_0-0 | Streaming-Media Framework Runtime | paquet
i | libgupnp-dlna-backend-gstreamer | GUPnP-DLNA GStreamer meta-extraction backend | paquet
i | PackageKit-gstreamer-plugin | Install GStreamer codecs using PackageKit | paquet
i+ | phonon4qt5-backend-gstreamer | Phonon Multimedia Platform Abstraction | paquet
i | phonon4qt5-backend-gstreamer-lang | Translations for package phonon4qt5-backend-gstreamer | paquet
i | vlc-codec-gstreamer | GStreamer integration for the VLC media player | paquet
et pour ffmepg (peut-être pas utile, c'est un logiciel je ne sais plus lequel qui le demande chez moi) :
i | ffmpeg-5 | Set of libraries for working with various multimedia formats | paquet
i+ | ffmpegthumbs | FFmpeg-based thumbnail creator for video files | paquet