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Autres articles (65)

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    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
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  • Submit bugs and patches

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    Unfortunately a software is never perfect.
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  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
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Sur d’autres sites (10115)

  • Converting PCM-ALAW data to an audio file using ffmpeg

    8 septembre 2020, par bbdd

    In my project, I processed the received RTP packets with the payload, and extracted all the payload to a separate buffer. This payload is - PCM ALAW (Type 8). How do I implement a class that will take as arguments - the file name and a buffer with raw data to create an audio file. Exactly what steps do I have to go through in order to encode raw data into an audio file ? As an example, I used this example.

    


  • How to modify SPS/PPS aka Codec Private data of a mkv file

    13 novembre 2019, par Minh Nghĩa

    I encode my clip in 5 parts (output is x265 in MKV), using -ss and -t to seek to cut position. Now mkvtoolnix refuses to merge the encoded files, warning that codec private data doesn't match.

    From this question in mkvtoolnix repo, I learned that the codec private data is encoded in PPS/SPS field of the file. I check the encoding settings from mediainfo, and found that all settings are the same, just one file has a different numa-pool argument. I think my files can still be merged.

    How can I edit SPS/PPS data to fool mkvmerge into merging my files ? Thanks !

  • Write raw PCMA data to an audio file using ffmpeg

    4 août 2020, par WithoutExperience

    I received a task where I have to process RTP packets containing audio data. In the previous question, I figured out how to process an RTP packet, and output the payload for further processing. In my case, the type of payload is PCMA (Payload type - 8). The problem occurs when writing the payload itself. I know that when allocating a payload, it also needs to be processed, since this load contains the audio data format and the audio data itself. The question is how do I create an audio file using the ffmpeg library and write audio packages created using the ffmpeg library itself to it. I should use the library functions, not the finished library itself.

    


    I looked at the encoder example, but I don't know how to bypass the raw PCMA data itself, how to create a frame and write it to a file.

    


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