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  • Qu’est ce qu’un éditorial

    21 juin 2013, par

    Ecrivez votre de point de vue dans un article. Celui-ci sera rangé dans une rubrique prévue à cet effet.
    Un éditorial est un article de type texte uniquement. Il a pour objectif de ranger les points de vue dans une rubrique dédiée. Un seul éditorial est placé à la une en page d’accueil. Pour consulter les précédents, consultez la rubrique dédiée.
    Vous pouvez personnaliser le formulaire de création d’un éditorial.
    Formulaire de création d’un éditorial Dans le cas d’un document de type éditorial, les (...)

  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

Sur d’autres sites (3862)

  • Messages : Create messages_tj.js

    14 janvier 2014, par 1darvesh
    Messages : Create messages_tj.js

    Added Tajik (Asia/Tajikistan) language
    

    Closes gh-888

  • Burning subtitles different resolutions

    3 mai 2018, par Facundo

    I’m trying to create a live stream with three quality profiles with different resolutions (SD, HD and FullHD). The live stream has subtitles, and I have to burn them for compatibility reasons.

    I know how to do it with one profile, but with many no idea.

    ffmpeg -nostdin -loglevel error -hwaccel cuvid -deint 2 -drop_second_field 1 -surfaces 15 -c:v h264_cuvid -resize 1280x720 -y -i udp://xxx.xxx.xxx.xxx:xxxxx?pkt_size=1316\&buffer_size=409600\&fifo_size=1000000\&overrun_nonfatal=1 -filter_complex [i:0x2c6]hwdownload,format=nv12[base];[i:0x993]setpts=(2.5)/TB+PTS[subs];[subs]scale=1280:720[subtitle];[base][subtitle]overlay[v];[v]hwupload_cuda[v] -map [v] -c:v hevc_nvenc -preset llhq -rc vbr_hq -cq 23 -qp 23 -tier high -profile:v main10 -level 4.0 -b:v 2000k -maxrate 2400k -bufsize 1000k -map i:0x2bd -c:a libfdk_aac -ac 2 -b:a 64k -map i:0x2be -c:a libfdk_aac -ac 2 -b:a 64k -metadata:s:a:0 language=eng -metadata:s:a:1 language=spa -f mpegts -mpegts_flags resend_headers+pat_pmt_at_frames -mpegts_copyts 1 -pcr_period 40 udp://yyy.yyy.yyy.yyy:yyyy?ttl=31\?pkt_size=1316\&buffer_size=409600\&fifo_size=1000000\&overrun_nonfatal=1

    Apparenlty, Iffmpeg doen’t allow to use -vf filter with filter_complex.

    I’m using ffmpeg 3.4, cuda 8.

  • ffmpeg : two videos side-by-side with audio1 lang=ger & audio2 lang=eng

    19 janvier 2023, par miridigital

    I have two videos from two GoPro cameras. Both videos are rendered via ffmpeg side-by-side into a single video (left and right) and the audio is currently combined/mixed into two channels (stereo). I can hear both camera audio channels at the same time.

    


    Two channels stereo :

    


    ffmpeg -i video1.mp4 -i video2.mp4 -filter_complex "[0:v][1:v]hstack=inputs=2[v]; [0:a][1:a]amerge[a]" -map "[v]" -map "[a]" -ac 2 side-by-side.mp4


    


    audio from both videos mixed into a single file with 2 channels - mediainfo

    


    Now I want to switch between the two audio channels (cam1 or cam2) while I'm playing the side-by-side video.

    


    My first try : With four channels (without -ac 2 parameter) :

    


    ffmpeg -i video1.mp4 -i video2.mp4 -filter_complex "[0:v][1:v]hstack=inputs=2[v]; [0:a][1:a]amerge[a]" -map "[v]" -map "[a]" side-by-side.mp4


    


    audio from both videos mixed into a single file with 4 channels - mediainfo

    


    But the most video players can't easily select the channels 1+2 or 3+4 while playing.

    


    So I tried two languages :

    


    ffmpeg -i video1.mp4 -i video2.mp4 -filter_complex "[0:v][1:v]hstack=inputs=2[v]; [0:a][1:a]amerge[a]" -map "[v]" -map "[a]" -metadata:s:a:0 language=ger -metadata:s:a:1 language=eng side-by-side.mp4


    


    audio from both videos mixed into a single file with 4 channels with languages - mediainfo

    


    But that's wrong. I can only see german with 4 channels. How can I put channels 1+2 into german and channels 3+4 into english ? Afterwards I should be able to use the multi language feature from most video players to switch the audio between cameras.

    


    Thank you,
    
Miriam

    


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