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Autres articles (27)
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Modifier la date de publication
21 juin 2013, parComment changer la date de publication d’un média ?
Il faut au préalable rajouter un champ "Date de publication" dans le masque de formulaire adéquat :
Administrer > Configuration des masques de formulaires > Sélectionner "Un média"
Dans la rubrique "Champs à ajouter, cocher "Date de publication "
Cliquer en bas de la page sur Enregistrer -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir -
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 (...)
Sur d’autres sites (4513)
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Understanding a script which uses ffmpeg to send rtmp input to node.js script
4 juin 2022, par Arpit ShuklaI was trying to understand this shell script which uses ffmpeg to take an rtmp input stream and send it to a node.js script. But I am having trouble understanding the syntax. What is going on here ?


The script :


while :
do
 echo "Loop start"

 feed_time=$(ffprobe -v error -show_entries format=start_time -of default=noprint_wrappers=1:nokey=1 $RTMP_INPUT)
 printf "feed_time value: ${feed_time}"

 if [ ! -z "${feed_time}" ]
 then
 ffmpeg -i $RTMP_INPUT -tune zerolatency -muxdelay 0 -af "afftdn=nf=-20, highpass=f=200, lowpass=f=3000" -vn -sn -dn -f wav -ar 16000 -ac 1 - 2>/dev/null | node src/transcribe.js $feed_time

 else
 echo "FFprobe returned null as a feed time."
 
 fi

 echo "Loop finish"
 sleep 3
done


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- What is
feed_timehere ? What does it represent ? - What is this portion doing
- 2>/dev/null | node src/transcribe.js $feed_time? - What is the use of
sleep 3? Does this mean that we are sending audio stream to node.js in chuncks of 3 seconds ?








- What is
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AWS Rekognition error : Chunk video failed
14 juin 2022, par Stefano LeoneI'm using and launching Amazon Rekognition on my videos uploaded into my S3 with python. Every video is converted with FFMPEG with
AACAudio Codec andH264Video Codec and then given to Rekognition. Videos are always fine, the problem is that only 60-70% of videos are processed successfully, while the rest of videos goes into error. In particular, inside the JSON returned from Rekognition :

{'JobId': '<id of="of" my="my" job="job">', 'Status': 'FAILED', 'API': 'StartFaceDetection', 'Message': 'Chunk video failed: Only 1 I-frames found in video', 'Timestamp': 1655118632996, 'Video': {'S3ObjectName': '<my video="video" inside="inside" s3="s3">', 'S3Bucket': '<my s3="s3">'}, 'ErrorCode': 'VideoNotDecodable'}
</my></my></id>

As you can see, I get an error
"Chunk video failed: only 1 I-Frames found in video". Honestly I don't know what is that, but the fact that I convert every video in the same way, but Rekognition fails only with some, makes me crazy. Googling was not helpful, hope you can tell me what's wrong.

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Thumbnails from S3 Videos using FFMPEG - "No such file or directory : '/bin/ffmpeg'"
28 juin 2022, par NicoI am trying to generate thumbnails from videos in an S3 bucket every x frames by following this documentation : https://aws.amazon.com/blogs/media/processing-user-generated-content-using-aws-lambda-and-ffmpeg/


I am at the point where I'm testing the Lambda code provided in the documentation, but receive this error in CloudWatch Logs :




Here is the portion of the Lambda code associated with this error :




Any help is appreciated. Thanks !


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