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    5 septembre 2013, par

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  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
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  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

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  • avcodec/vlc : Attempt to free buf after use in ff_vlc_init_multi_from_lengths()

    13 septembre 2023, par Michael Niedermayer
    avcodec/vlc : Attempt to free buf after use in ff_vlc_init_multi_from_lengths()

    Fixes : use after free
    
Fixes : 62153/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MAGICYUV_fuzzer-4702814909366272
    

    Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavcodec/vlc.c

  • List of free TCP ports in C++ without using bind() with port=0

    8 mai 2016, par userDtrm

    I need to create a set of dynamic ffmpeg instances that listens to a port that is available within a C++ program. The ffmpeg instances are created using a command identified as ffmpeg -i tcp://ip:port?listen ..., where the port number should be an available free port. Then ffmpeg command is executed using execv() within a c++ program.

    Therefore, I need to find a free port which is currently available without using bind() with port=0. As I understand, the bind() will bind the port when trying to check if the port is available.

    Please let me know if there is a way to implement this within C++.

    Thanks.

  • Libav - how to correctly free memory leaking with av_write_frame

    20 avril 2017, par golstar

    I am using LIBAV on Ubuntu to save user’s video stream(RTP VP8) on server in WebM format.
    The problem is, memory is leaking when using av_write_frame. Memory usage is constantly growing (equally with the webm file size) and is never freed after finishing the video recording. The only way to free the memory(RAM) is deleting the WebM file from the storage (HD) afterwards.

    I have 2 questions :

    1. Is it possible to free the memory consumed by av_write_frame during runtime ? I am freeing the packet.data correctly. Memory usage is not growing when av_write_frame line is commented.

    2. What is the correct way to close the file ? This is what I’m doing (it does not free the memory) :

      av_write_trailer(fctx);
      avcodec_close(vStream->codec);
      avio_close(fctx->pb);
      avformat_free_context(fctx);

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