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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 (...)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
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    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
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Sur d’autres sites (6225)

  • How to convert rtp codec in online to amr-nb/wb (octet-align = 0) by FFMPEG ?

    28 janvier 2019, par Mehdi Talebi

    rtp is received as input with different payload types such as amr-nb and WAVE.It is necessary to convert all of them to amr-wb but in bandwidth-align (NOT octet-align).
    I use this command to convert :

    ffmpeg -re -i rtp ://127.0.0.1:1235 -ar 16000 -ab 19.85k -acodec libvo_amrbenc -f rtp rtp rtp ://127.0.0.1:1236

    But the out put (SDP) is like this :

    1. v=0
    2. o=- 0 0 IN IP4 127.0.0.1
    3. s=No Name
    4. c=IN IP$ 127.0.0.1
    5. t=0.0
    6. a=tool:libvaformat 58.25.100
    7. m=audio 1236 RTP/AVP 97
    8. b=AS:19
    9. a=rtpmap:97 AMR-WB/16000/1
    10. a=fmtp:97 octet-align =1

    My problem is octet-align =1, i need octet-align = 0. Do you know any argument to set this in the command ?

  • FFmpeg - Convert MP4 to Webm very slow

    26 avril 2017, par Luzwitz

    I need convert MP4 to webm with ffmpeg.
    So, i use :

    ffmpeg -i input.mp4 -c:v libvpx -crf 10 -b:v 1M -c:a libvorbis output.webm

    But it’s very long.

    Is there faster ?

  • ffmpeg convert mov to mp4 without reduction of bit rate

    17 février 2021, par connor449

    I am trying to convert a mov video to mp4, but I don't want any compression to happen. I recorded it with Quicktime on a Mac and did so with maximum, uncompressed quality. When I run ffmpeg -i. I get :

    


        Stream #0:0(und): Video: prores (apcn / 0x6E637061), yuv422p10le(bt709), 1280x720, 72073 kb/s, 30.09 fps, 30 tbr, 30k tbn, 30k tbc (default)



    


    Note the kb/s is 72,073. I want to preserve this bit rate.

    


    I've tried a few different conversion commands, including :

    


    ffmpeg -i input.mov output.mp4


    


    and :

    


    ffmpeg -i input.mov -qscale 0 output.mp4



    


    Both work, but both result in a loss of bit rate. See info on the results of both

    


        Stream #0:0(und): Video: h264 (High 4:2:2) (avc1 / 0x31637661), yuv422p, 1280x720, 4569 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)


    


    How do I convert to mp4 and still have 72,000 kb/s ? Is this possible ?

    


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