
Recherche avancée
Médias (1)
-
Sintel MP4 Surround 5.1 Full
13 mai 2011, par
Mis à jour : Février 2012
Langue : English
Type : Video
Autres articles (63)
-
List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...) -
Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
-
Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
You may also (...)
Sur d’autres sites (5976)
-
Restream with FFmpeg [closed]
30 mars, par boyuna1720I have iptv playlist file with inside VODs and Channel links. I want to restream it from my server becouse provider allows only one user to watch. When i am using Nginx with RTMP and FFmpeG i am getting this error. please tell me if anyone can help to fix this issue.


ffmpeg -re -i "http://excel90095.cdn-akm.me:80/23a9a158d8d8/2dd736a985/325973" -c:v copy -c:a aac -f flv "rtmp ://localhost/live/test"




-
How to Save an Image (Current Frame) from an RTSP, using FFMPEG ?
4 mars 2023, par spacemanI recently purchased a Security Camera,

and it provides an RTSP URL withwhich you can view the video.

So If I run the command
VLC rtsp://<ip>/etc</ip>
for example,

then I am successfully able to watch the stream from the camera.

My question is :

Does FFMPEG provide some command line operation for Saving one Image from an RTSP Stream to disk ?

That way I can run this command, and have a .PNG or .JPG file created on disk.


-
Is there a way to (automatically) detect if the channels of a stereo video/audio are out of phase and canceling each other ?
8 mars 2024, par Rhenan BartelsBackground


I've encountered an issue while attempting to convert an audio downloaded from a youtube video into a mono .wav format using
ffmpeg
. Despite using typical conversion commands (code below), the resulting audio is either silent or corrupted, indicating potential stereo channel cancellation.
I tried to load the audio into Python and calculate phase and cross-correlation, but this step uses a lot of memory, especially for a 6-hour-long audio.

Goal


I'm seeking a method, preferably using
ffmpeg
, to detect if stereo channels are canceling each other out due to phase misalignment. Additionally, I aim to automate the process of phase inversion before converting to mono to ensure the integrity of the resulting audio.

Question :


How can I automatically detect if stereo channels are canceling each other and subsequently invert the phase to ensure successful conversion to mono using
ffmpeg
? Any insights, solutions, or alternative approaches would be greatly appreciated.

Steps Taken :


- 

- Downloaded audio from YouTube using
yt-dlp
. - Attempted audio conversion to mono using
ffmpeg
, resulting in silent or corrupted output. - Successfully converted audio to mono by manually inverting the phase of one channel prior to conversion.








Download audio from youtube


yt-dlp -f bestaudio https://www.youtube.com/watch?v=s3QB_rJzH08 -o input.webm



Audio conversion


The resulting file is silent or corrupted


ffmpeg -i input.webm -ac 1 -ar 16000 -c:a pcm_s16le output.wav



Audio conversion to mono .wav with phase inversion


The resulting file has audio


ffmpeg -i input.webm -af "aeval=val(0)|-val(1)" -ac 1 -ar 16000 -c:a pcm_s16le output.wav



- Downloaded audio from YouTube using