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  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

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Sur d’autres sites (8479)

  • video concating in FFmpeg from front and back camera creating a video flip [closed]

    27 octobre 2020, par Suraj Lalla

    When concating a video from front camera and back camera in FFmpeg the video from the front camera is flipped 180 degrees, please help ...

    


  • Android - merge videos taken with front and back cameras

    3 mai 2023, par Raz Leshem

    I am having an orientation problem when merging videos taken with front and back cameras in portrait, recorded using Android CameraX.

    


    This issue is explained here, but I am yet to find a working solution. I have tried multiple solutions, such as using mp4parser as suggested in the issue explanation, but the result is a that every alternate camera video is upside down.
I also tried using FFmpeg for android - mobile-ffmpeg.
Using ffmpeg Concat demuxer resulted in the same result as mp4parser did.

    


    Concat demuxer command I used : ffmpeg -f concat -safe 0 -i mylist.txt -c copy output.mp4

    


    I also tried changing the rotation metadata of the videos to match before concatenating, similar to how it's done here, but that did not seem to have any effect on the end result.

    


    Lastly, I used ffmpeg Concat filter. That solution took longer obviously because of the re-encoding of the video but it did fix the problem of the orientation of the videos, but the output video quality was poor.

    


    Concat filter command :

    


    ffmpeg -i front1.mp4 -i rear1.mp4 -i front2.mp4 \
-filter_complex "[0:v] [0:a] [1:v] [1:a] [2:v] [2:a] \
concat=n=3:v=1:a=1 [v] [a]" \
-map "[v]" -map "[a]" output.mp4


    


    Has anyone found a solution on how to fix the orientation problem in android ? or maybe how can I keep the videos quality as much as possible when using the FFmpeg Concat filter to merge the videos ?

    


  • Revision 07711e9b27 : Use hybrid RD and non-RD coding flow for key frame coding When block size is be

    4 décembre 2014, par Jingning Han

    Changed Paths :
     Modify /vp9/encoder/vp9_encodeframe.c


     Modify /vp9/encoder/vp9_speed_features.c



    Use hybrid RD and non-RD coding flow for key frame coding

    When block size is below 16x16, the encoder swap from non-RD to
    RD mode for key frame coding. This largely brough back the key
    frame compression performance. For vidyo1 at 1000 kbps, the key
    frame coding statistics are changed

    9978F, 34.183 dB, 36807 us -> 9838F, 35.020 dB, 61677 us

    As compared to the full RD case
    7187F, 34.930 dB, 214470 us

    The overall rtc set coding performance (single key frame setting)
    is improved by 1.5%.

    Change-Id : I78a4ecf025d7b24ec911e85be94e01da05e77878

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