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Autres articles (44)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...) -
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
Sur d’autres sites (6050)
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Do I need an AVFormatContext for decoding raw audio data ?
4 décembre 2023, par CheekyChipsI am streaming encoded audio data to my program, in raw byte arrays. The audio data could have any encoding but when I receive the data I will know the encoding, sample rate, etc, so I know how to interpret it. Using ffmpeg/libav libraries, I want to decode the audio chunks when I receive them and do some processing with them (e.g. resampling). My question is, since I am getting raw encoded audio data that is not wrapped in a file format, do I still need to create a
AVFormatContext
and useav_read_frame()
to get the encodedAVPacket
? Or should I just create anAVPacket
usingav_packet_from_data(AVPacket *pkt, uint8_t *data, int size)
and manually set the properties like encoding, sample rate, etc ? It is my understanding thatAVFormatContext
is meant for representing file formats, i.e. wrappers, so I don't know if it would work if I use raw encoded audio data (which I would access through a customAVIOContext
). Also, since I want to support lots of different audio codecs as input, I don't know if the different frame sizes for different codecs will make it difficult to create anAVPacket
, if I have the wrong number of samples in my data array, so maybe anAVFormatContext
would be better.

Which is the better approach for decoding raw encoded audio chunks - creating an
AVFormatContext
orAVPacket
s ?

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How to split each channel data of the recording [on hold]
4 décembre 2018, par MikeDuring the mass production process, the 4-channel data of the microphone recording is split into the data of each channel.
How to use ffmpeg split each channel data of the recording
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Trancsode and generate waveform data file in ffmpeg with a single command
19 mai 2019, par user1152226I am trying to transcode and generate a waveform data file in the same command. I cannot figure out how to generate 2 output files from a single input. I want an mp4 file, and the waveform data file. The waveform data needs to be generated from the output of the transcoding step (ie, after the stream has already been transcoded)
The following does not work :
ffmpeg -i "https://mp3l.jamendo.com/?trackid=862797&format=mp31" -map 0:a -c:a libfdk_aac out1.mp4 -f data data.txt
Output file #1 does not contain any stream