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Déploiements possibles
31 janvier 2010, parDeux types de déploiements sont envisageable dépendant de deux aspects : La méthode d’installation envisagée (en standalone ou en ferme) ; Le nombre d’encodages journaliers et la fréquentation envisagés ;
L’encodage de vidéos est un processus lourd consommant énormément de ressources système (CPU et RAM), il est nécessaire de prendre tout cela en considération. Ce système n’est donc possible que sur un ou plusieurs serveurs dédiés.
Version mono serveur
La version mono serveur consiste à n’utiliser qu’une (...) -
Taille des images et des logos définissables
9 février 2011, parDans beaucoup d’endroits du site, logos et images sont redimensionnées pour correspondre aux emplacements définis par les thèmes. L’ensemble des ces tailles pouvant changer d’un thème à un autre peuvent être définies directement dans le thème et éviter ainsi à l’utilisateur de devoir les configurer manuellement après avoir changé l’apparence de son site.
Ces tailles d’images sont également disponibles dans la configuration spécifique de MediaSPIP Core. La taille maximale du logo du site en pixels, on permet (...) -
Contribute to a better visual interface
13 avril 2011MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.
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How to decode an MPEG Dash Widevine
5 janvier 2016, par MartijnI have a video stream that I’d like to save to disk so I can play this back at a later time when I don’t have an internet connection at my disposal.
The stream is a MPEG Dash Stream that uses Common Encryption, PlayReady, Widevine or Marlin.
Is this possible in language like Go or NodeJS ?
Could this be done using a command line utility like ffmpeg ? -
timeshift Jumps in Live Streaming HLS Playback
8 avril 2024, par matinsome times in live streaming with hls (h264) client show a jump back in time shift
but index.m3u8 and playlist.m3u8 is ok and segments are correctly generated
I see this problem in our player and hls demo too
is there any thing related too transcoding and ffmpeg cause or prevent this problem


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FFMPEG concat leaves audio gapes between clips
14 novembre 2022, par GotCubesI'm writing a python script that uses subprocess to invoke FFMPEG, not using pyffmpeg.



My script generates a variable number of MP4 files using the AAC audio codec, and concatenates them together using FFMPEG. Here is how I'm constructing each clip :



ffmpeg -loop 1 -i image.jpg -i recording.mp3 -tune stillimage -c:a aac -b:a 256k -shortest clip.mp4




The command I'm using to concatenate them is :



ffmpeg -f concat -i clip_names.txt -c copy video_raw.mp4




I then take that resulting video, and mix a looping audio track over it, and adjust the volume. (Sorry for the awful formatting)



ffmpeg -i video_raw -filter_complex
 "amovie=Tracks/Breaktime.mp3:loop=0,
 volume=0.1,
 asetpts=N/SR/TB[aud];
 [0:a][aud]amix[a]"
-map 0:v -map [a] -b:a 256k -shortest final_video.mp4




These commands seem to work as I intend them to. When I play the resulting MP4 from my local machine, everything plays without issue.



However, I uploaded the video to YouTube, and ran into issues. When the video is played from YouTube, there is about a second of silence at every timestamp where two clips were concatenated, before the next clip begins. I've tried this from Chrome, IE, and Firefox, all with the same issues.



Based on what I've looked into so far, I think it could be an issue with how the priming samples of each individual clip are handled. I'm not obligated to keep using MP4 or AAC, so if using a different audio/video codec would work better, feel free to suggest !



Is there some type of manipulation I can do in FFMPEG to get rid of the priming samples, or somehow process them differently ? In the end, I'm looking for each clip to play back to back without the delay that the concat operation seems to insert. Thank you !