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Médias (91)

Autres articles (38)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

Sur d’autres sites (8576)

  • Android - Best solution to convert recorded H.264 Main Profile videos to H.264 Baseline Profile

    19 février 2016, par Alireza

    I found MediaPlayer cannot play videos which are encoded by H.264 Main Profile and I tried ExoPlayer and Vitamio but none of them solved my problem. finally I found the best solution is converting videos to H.264 Baseline Profile. FFmpeg is almost 9MB and it’s so heavy for my project, so I don’t like to use it for converting videos to that profile by commands. My friend suggested converting videos on the server-side but we both know it has bad performance. What should I do ? What is the best solution to this problem ?

  • Not able to change H264 profile to High from Main using FFMPEG API

    7 juin 2015, par AsG

    I am using QtFFMPEG wrapper(https://code.google.com/p/qtffmpegwrapper/) with Qt 5.4 and MSCV 2012. I want to encode a mp4 video from image files at 25 fps and high profile.
    I used the createFile() and encodeImage() functions from here

    I am using the below parameters :

    pCodecCtx=pVideoStream->codec;
    
pCodecCtx->codec_id = pOutputFormat->video_codec;
    
pCodecCtx->codec_type = ffmpeg::AVMEDIA_TYPE_VIDEO;
    
pCodecCtx->profile=FF_PROFILE_H264_HIGH;
    
pCodecCtx->bit_rate = Bitrate;
    
pCodecCtx->width = getWidth();
    
pCodecCtx->height = getHeight();
    
pCodecCtx->time_base.den = fps;
    
pCodecCtx->time_base.num = 1;
    
pCodecCtx->gop_size = 10;
    
pCodecCtx->pix_fmt = ffmpeg::PIX_FMT_YUV420P;
    
pCodecCtx->qmin = 10;
    
pCodecCtx->qmax = 51;

    The FFMPEG variables are :

    License: %s
    
 GPL version 3 or later
    
AVCodec version %d
    
 3476480
    
AVFormat configuration: %s
    
 --disable-static --enable-shared --enable-gpl --enable-version3 --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib

    Now I currently get a video with below properties :

    ID                             : 1
    
Format                         : AVC
    
Format/Info                    : Advanced Video Codec
    
Format profile                 : Main@L3.2
    
Format settings, CABAC         : No
    
Format settings, ReFrames      : 1 frame
    
Format settings, GOP           : M=1, N=10
    
Codec ID                       : avc1
    
Codec ID/Info                  : Advanced Video Coding
    
Duration                       : 4s 320ms

    I want the profile to be "High" and the CABAC to be yes with 3 ReFrames. How do I achieve that ? I tried setting the profile, coder_type and max_b_frames but did not help. At times the generated file did not even play. Can anyone help please. Thanks.

    I also tried using the av_opt_set() way but could not find that function. Only function I have is av_opt_set_dict(), am I missing something - outdated FFMPEG or missing #include.

    Tried this too, didnt help-

       ffmpeg::AVDictionary *opt = NULL;
    
   int iRes = av_dict_set(&opt, "profile", "high", 0);
    
   av_opt_set_dict(pFormatCtx->priv_data, &opt);
    
   av_opt_set_dict(pFormatCtx, &opt);

    Please help.

    EDIT :
    I got a high quality mp4 by changing the qmin and qmax values and then reencoding the big sized output via command line. I will try to upgrade the FFMPEG as suggested by Ronald below. Please consider the question closed for now.

  • ffmpeg erorr as "video4linux2 Dequeued v4l2 buffer contains corrupted data (0 bytes). " when captured image,in beaglebone black,

    12 février 2020, par Deepak Poul

    when i’m capturing a image using ffmpeg 4.2.1 in debian 9.5 of Beaglebone black its not showing this error
    as
    [video4linux2,v4l2 @ 0x2e0f1e0] Dequeued v4l2 buffer contains corrupted data (0 bytes).
    i used this command to capture image
    "ffmpeg -y -i /dev/video0 -ss 00:00:06 -vframes 1 image.jpg"

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