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Autres articles (61)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • 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 (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

Sur d’autres sites (7152)

  • ffmpeg transcode to hls and multiple aac audio tracks

    23 août 2023, par Aquarius

    I'm trying to transcode h264 mp4 file to HLS format with multiple AAC audio tracks. On Windows browsers everythins works like a shine. There's an option to switch audio track

    


    audio track switcher

    


    It doesn't work on Android devices or TV. On Android Opera browser video works with sound, but screen stuck while seeking and there's no option to switch audio track. On TV browser video works, it doesn't stuck when seeking but also no option to switch audio track

    


    Using video.js player on site. Below code for transcode and produced manifest file

    


    ffmpeg -i "file.mp4" -i PL-6ch.aac -i EN-6ch.aac -map 0:v -map 1:a -map 2:a -c:v copy -c:a:0 aac -ac:a:0 6 -af channelmap=channel_layout=5.1 -c:a:1 aac -ac:a:1 6 -af channelmap=channel_layout=5.1 -tag:v:0 h264 -b:v:0 2500k -tag:a:0 aac -b:a:0 384k -tag:a:1 aac -b:a:1 384k -f hls -hls_time 10 -hls_playlist_type vod -hls_list_size 0 -master_pl_name file.m3u8 -var_stream_map "v:0,agroup:AAC a:0,agroup:AAC,language:pl a:1,agroup:AAC,language:en" file_%v_.m3u8


    


    #EXTM3U
#EXT-X-VERSION:3
#EXT-X-INDEPENDENT-SEGMENTS
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="AAC",NAME="Polish",AUTOSELECT=YES,DEFAULT=YES,LANGUAGE="pl",URI="file_1_.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="AAC",NAME="English",AUTOSELECT=YES,DEFAULT=NO,LANGUAGE="en",URI="file_2_.m3u8"
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=3172400,RESOLUTION=1920x872,CODECS="avc1.640029,mp4a.40.2",AUDIO="AAC" 
file_0_.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=422400,CODECS="mp4a.40.2",AUDIO="AAC"
file_1_.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=422400,CODECS="mp4a.40.2",AUDIO="AAC"
file_2_.m3u8


    


    Any clues what's wrong ?

    


  • ffplay shows no video from Grass Valley KMX in HDMI input even though HDMI from scope bars displays just fine

    14 juin 2023, par Scott Wilkerson

    I'm trying to replace an unsupported video input player that uses a Decklink card to superimpose video on an iControl widget. I was able to get this to work with a Decklink Mini Recorder 4K card with ffplay using this command :

    


    ffplay -f dshow -video_size 1280x720 -left 631 -top 19 -rtbufsize 702000k -framerate 59.94 -i video="Decklink Video Capture":audio="Decklink Audio Capture" -noborder -hide_banner -alwaysontop

    


    I used bars and tone from a handheld scope to test the video window and it worked great. When I put it into production with input from a Grass Valley KMX it only displays black. I can see the video, chroma, audio etc in the video window stats. The KMX video can display just fine with the Black Magic Media Express app. Any ideas what might be tripping it up ?

    


    I tried -videoinput HDMI, which did not work.

    


  • avdevice/decklink_enc : Add support for compressed AC-3 output over SDI

    7 avril 2023, par Devin Heitmueller
    avdevice/decklink_enc : Add support for compressed AC-3 output over SDI

    Extend the decklink output to include support for compressed AC-3,
    
encapsulated using the SMPTE ST 377:2015 standard.
    

    This functionality can be exercised by using the "copy" codec when
    
the input audio stream is AC-3.  For example :
    

    ./ffmpeg -i /foo.ts -codec:a copy -f decklink 'UltraStudio Mini Monitor'
    

    Note that the default behavior continues to be to do PCM output,
    
which means without specifying the copy codec a stream containing
    
AC-3 will be decoded and downmixed to stereo audio before output.
    

    Thanks to Marton Balint for providing feedback.
    

    Signed-off-by : Devin Heitmueller <dheitmueller@ltnglobal.com>
    
Signed-off-by : Marton Balint <cus@passwd.hu>
    • [DH] libavdevice/decklink_enc.cpp

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