Recherche avancée
Médias (1)
-
GetID3 - Bloc informations de fichiers
9 avril 2013, par
Mis à jour : Mai 2013
Langue : français
Type : Image
Autres articles (106)
-
Pas question de marché, de cloud etc...
10 avril 2011Le vocabulaire utilisé sur ce site essaie d’éviter toute référence à la mode qui fleurit allègrement
sur le web 2.0 et dans les entreprises qui en vivent.
Vous êtes donc invité à bannir l’utilisation des termes "Brand", "Cloud", "Marché" etc...
Notre motivation est avant tout de créer un outil simple, accessible à pour tout le monde, favorisant
le partage de créations sur Internet et permettant aux auteurs de garder une autonomie optimale.
Aucun "contrat Gold ou Premium" n’est donc prévu, aucun (...) -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Other interesting software
13 avril 2011, parWe don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
We don’t know them, we didn’t try them, but you can take a peek.
Videopress
Website : http://videopress.com/
License : GNU/GPL v2
Source code : (...)
Sur d’autres sites (5100)
-
Pims.open Throws "UnkownFormat Error" with "Invalid Argument" On One Machine But Not on Another
12 août 2021, par KaceBellamyI'm trying to do some video processing for a physics experiment, and I want to do it on my much more powerful Windows desktop computer as opposed to my Mac laptop.


The following code works like a dream when run as a Jupyter notebook on my Mac :


import matplotlib as mpl
from mpl_toolkits import mplot3d
import pims
import trackpy as tp 

@pims.pipeline
def gray(image):
 return image[:, :, 1] # Take just the green channel

frames = gray(pims.open('output.mp4'))


but on my Windows machine I get this error :


---------------------------------------------------------------------------
UnknownFormatError Traceback (most recent call last)
~\AppData\Local\Temp/ipykernel_12152/704954007.py in <module>
 1 #Actually converts the video. Might be VERY processor intensive... or not?
----> 2 frames = gray(pims.open('output.mp4')) #Make the File Name whatever file you like!

~\miniconda3\lib\site-packages\pims\api.py in open(sequence, **kwargs)
 207 warn(message)
 208 exceptions += message + '\n'
--> 209 raise UnknownFormatError("All handlers returned exceptions:\n" + exceptions)
 210 
 211 

UnknownFormatError: All handlers returned exceptions:
<class> errored: [Errno 22] Invalid argument: 'output.mp4'
<class> errored: [Errno 22] Invalid argument: 'output.mp4'
<class> errored: Could not load meta information
=== stderr ===

ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
 built with gcc 9.2.1 (GCC) 20200122
 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-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-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
 libavutil 56. 31.100 / 56. 31.100
 libavcodec 58. 54.100 / 58. 54.100
 libavformat 58. 29.100 / 58. 29.100
 libavdevice 58. 8.100 / 58. 8.100
 libavfilter 7. 57.100 / 7. 57.100
 libswscale 5. 5.100 / 5. 5.100
 libswresample 3. 5.100 / 3. 5.100
 libpostproc 55. 5.100 / 55. 5.100
C:\Users\Callum\OneDrive - The University of Chicago\output.mp4: Invalid argument
<class> errored: MoviePy error: failed to read the duration of file output.mp4.
Here are the file infos returned by ffmpeg:

ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
 built with gcc 9.2.1 (GCC) 20200122
 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-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-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
 libavutil 56. 31.100 / 56. 31.100
 libavcodec 58. 54.100 / 58. 54.100
 libavformat 58. 29.100 / 58. 29.100
 libavdevice 58. 8.100 / 58. 8.100
 libavfilter 7. 57.100 / 7. 57.100
 libswscale 5. 5.100 / 5. 5.100
 libswresample 3. 5.100 / 3. 5.100
 libpostproc 55. 5.100 / 55. 5.100
output.mp4: Invalid argument
</class></class></class></class></module>

output.mp4 is just a run of the mill video file taken on a CCD camera ; I've tried converting it to a .MOV, I've tried other video files taken on different cameras, and I've tried running the file through FFmpeg to impose a 30 fps framerate ; everything I've tried works fine on my Mac and throws the above error on my Windows machine.


For reference, I installed necessary packages for this code on both machines this morning, so it should all be up to date and the same on both.


Any ideas as to what's up ? Thanks !


-
Split ffmpeg audio and video to different pipe outputs
8 septembre 2021, par Bryan HornaI have a conference application using Jitsi Meet, and using their Jibri tool for streaming to an RTMP source.

But the delay is intolerable as of now so while looking out for alternatives I found that I can use WebRTC.

It turns out that most of the tools I've found (Pion, and others) expect me to send separate video/audio streams.

And Jibri uses anffmpegcommand which outputs both streams joined, so I want to split them.

Here's the command in question :


ffmpeg \
-y -v info \
-f x11grab \
-draw_mouse 0 \
-r 30 \
-s 1920x1080 \
-thread_queue_size 4096 \
-i :0.0+0,0 \
-f alsa \
-thread_queue_size 4096 \
-i plug:bsnoop \
-acodec aac -strict -2 -ar 44100 -b:a 128k \
-af aresample=async=1 \
-c:v libx264 -preset veryfast \
-maxrate 2976k -bufsize 5952k \
-pix_fmt yuv420p -r 30 \
-crf 25 \
-g 60 -tune zerolatency \
-f flv rtmps://redacted.info


I'd want to have it output to at least two outputs (one for video and other for audio), using
pipe:xorrtp://.

It'll be better if multiple output codecs are possible (audio opus/aac, video h264/vp8), so it supports most of WebRTC.

I've read the documentation at ffmpeg website but still can't get to a command that does this job in just one command.

I know I could use-anand-vnwith two differentffmpegcommands but that would consume more CPU I guess.

Thanks in advance for your great help !


-
FFMPEG and FFPlay can access rtsp stream from one ip, but from other ip, it can't
28 mai 2022, par CrearThe situation is kind of complex. I was archiving several CCTV camera feeds (rtsp, h264, no audio) through OpenCV, which worked but the CPU utilization was too high and started to lose some frames time by time.


To reduce the CPU utilization, I started to use FFMPEG to skip the decoding and encoding processes, which worked perfectly on my home machine. However, when I connected to my university VPN and tried to deploy it on our lab server, FFmpeg couldn't read any frame, ffplay couldn't get anything either. However, OpenCV, VLC Player and IINA Player could still read and display the feed.


In Summary,


1 FFMPEG/ffplay


1.1 can only read the feed from my home network(Wi-Fi, optimum)


1.2 from other two networks, the error message says : "Could not find codec parameters for stream 0 (Video : h264, none) : unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options"


2 IINA/VLC Player, OpenCV
These tools can get the video all the time.


I'm wondering whether it's related to some specific port access, that the ffmpeg required but the others don't. I'd appreciate it if anyone can provide any suggestions.


As references, the tested ffplay command is simple :


ffplay 'the rtsp address'


Thanks



Update


More tests have been performed.


By specifying rtsp_transport as TCP, ffplay can play the video, but FFmpeg can't access the video. (In the beginning, when both FFmpeg and ffplay worked through my home network, it was UDP)
The FFmpeg command is as follows :


ffmpeg -i rtsp://the_ip_address/axis-media/media.amp -hide_banner -c:v copy -s 1920x1080 -segment_time 00:30:00 -f segment -strftime 1 -reset_timestamps 1 -rtsp_transport tcp "%Y-%m-%d-%H-%M-%S_Test.mp4"


Please help...


Syndiquer tout le site
