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Autres articles (58)
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Use, discuss, criticize
13 avril 2011, parTalk 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. -
L’espace de configuration de MediaSPIP
29 novembre 2010, parL’espace de configuration de MediaSPIP est réservé aux administrateurs. Un lien de menu "administrer" est généralement affiché en haut de la page [1].
Il permet de configurer finement votre site.
La navigation de cet espace de configuration est divisé en trois parties : la configuration générale du site qui permet notamment de modifier : les informations principales concernant le site (...) -
Contribute to a better visual interface
13 avril 2011MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.
Sur d’autres sites (9191)
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Malloc Check Failed when opening video stream
23 août 2013, par donturnerI'm writing a BlackBerry 10 application which decodes an H264 video stream (from a Parrot AR Drone) using ffmpeg and libx264. These libraries have both been compiled for BlackBerry QNX.
Here's my code :
av_register_all();
avcodec_register_all();
avformat_network_init();
printf("AV setup complete\n");
const char* drone_addr = "http://192.168.1.1:5555";
AVFormatContext* pFormatCtx = NULL;
AVInputFormat* pInputFormat = av_find_input_format("H264");
printf("Opening video feed from drone\n");
//THIS LINE FAILS
int result = avformat_open_input(&pFormatCtx, drone_addr, pInputFormat, NULL);The last line fails with the error :
Malloc Check Failed: :../../dlist.c:1168
How can I fix this error or debug it further ?
Update : The error only occurs when I supply
pInputFormat
toavformat_open_input
. If I supply NULL I don't get an error. But for my app I must supply this parameter since it is not possible for ffmpeg to determine the video format from the feed alone. -
Ne plus utiliser qt-faststart
28 août 2013Il est possible d’éviter d’utiliser
qt-faststart
en utilisant le paramètre-moveflags
dans la commande de FFMpeg depuis ce commit : http://git.videolan.org/?p=ffmpeg.git ;a=commit ;h=a714150827c70f8baf2ec42dfecd9363c17e803d (soit depuis moins d’une année lors de la rédaction du ticket).Son utilisation est un peu expliqué ici :
- https://ffmpeg.org/ffmpeg-formats.html
- http://stackoverflow.com/questions/17350503/ffmpeg-how-to-determine-if-movflags-faststart-is-enabled-php
- http://blog.walterebert.com/start-playing-mp4-videos-before-download-has-finished/
Tâches à réaliser
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FFmpeg CLI - transcode only if necessary
23 septembre 2018, par TyrrrzI want to mux an audio and video stream into a single video file. These two streams come in arbitrary formats. Sometimes the input and output encodings will match, in which case I would want to save a lot of processing time by using
-c copy
argument that tells FFmpeg to avoid transcoding.Is there a way to tell FFmpeg to automatically determine if transcoding is required, based on the formats of input files ? Alternatively, I can do the check myself, but I would prefer for FFmpeg to do in on its own, if possible.