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Autres articles (104)
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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 (...) -
Création définitive du canal
12 mars 2010, parLorsque votre demande est validée, vous pouvez alors procéder à la création proprement dite du canal. Chaque canal est un site à part entière placé sous votre responsabilité. Les administrateurs de la plateforme n’y ont aucun accès.
A la validation, vous recevez un email vous invitant donc à créer votre canal.
Pour ce faire il vous suffit de vous rendre à son adresse, dans notre exemple "http://votre_sous_domaine.mediaspip.net".
A ce moment là un mot de passe vous est demandé, il vous suffit d’y (...) -
Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...)
Sur d’autres sites (4645)
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ffmpeg produce not expected number of frames
22 mars 2016, par mrgloomI’m using this command to count frames in video.
FRAME_COUNT=`./ffprobe -v error -count_frames -select_streams v:0 -show_entries stream=nb_read_frames -of default=nokey=1:noprint_wrappers=1 $VIDEO_NAME`
and this command for video splitting :
ffmpeg -i $VIDEO_NAME -qscale:v 1 $DIRNAME$SEPARATOR'image%d.jpg'
but last command produce much more images then expected for some videos, for example calculated number of frames is 597 and produces number of images > 100,000.
What can be the case of such behaviour ?
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MPJPEG Expected boundary '—' not found
12 août 2019, par Mauro SampietroI get the following error when streaming from a video camera.
"[mpjpeg @ 00555000] Expected boundary ’—’ not found, instead found a line of n bytes"
When debugging, the above error is written to the console multiple times a second. As a result i can only get a frame every many seconds. This prevents me to actually stream from the camera. In release mode, the problem is not there.
I’d like to solve the problem the clean way by letting ffmpeg know that stream is not mpjpeg but a mjpeg one.
I read about forcing "-f mjpeg" in ffmpeg.exe, but i’m not actually using ffmpeg.exe : i’m using its libraries directly.
So how do i set those parameters ?
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http: Add an option for forcing basic authentication
9 octobre 2013, par Martin Storsjöhttp: Add an option for forcing basic authentication
The default is to autodetect the auth method. This does require one
extra request (and also closing and reopening the http connection).
For some cases such as HTTP POST, the autodetection is not handled
properly (yet).No option is added for digest, since this method requires getting
nonce parameters from the server first and can’t be used straight
away like Basic.Signed-off-by : Martin Storsjö <martin@martin.st>