
Recherche avancée
Médias (1)
-
Spitfire Parade - Crisis
15 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
Autres articles (105)
-
Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ; -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs
Sur d’autres sites (12960)
-
avformat/jacosubdec : Use 64bit for abs
25 mars 2024, par Michael Niedermayeravformat/jacosubdec : Use 64bit for abs
Fixes : negation of -2147483648 cannot be represented in type 'int' ; cast to an unsigned type to negate this value to itself
Fixes : 62276/clusterfuzz-testcase-minimized-ffmpeg_dem_JACOSUB_fuzzer-5401294942371840Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc> -
How to avoid audio sample 16bit clipping after equalization ?
28 mai 2013, par testCoderI have samples which come from ffmpeg, very often it is 16 bit samples (short type), i have used iir band pass filter with dbGain as described here, after filtering i sometimes got a short type overflow and result of it is some noise when calculated sample value go out from 32767/-32767, Is any way to escape audio pcm sample clipping. May be exists any approaches ?
I have googled but not found any worked example ?
UPDATE
When i cast transfer function calculation result to integer and check overflow then noise still occurs: :
int result = A1 * ((int) Rx) + A2 * ((int) Rxx) + A3 * ((int) Rxxx)
- B1 * ((int) Ryy) - B2 * ((int) Ryyy);
if (result > 32767)
result = 32767;
if (result < -32700)
result = -32700;
y = (short) result; -
avcodec/agm : Fix integer overflow with w/h
5 avril 2019, par Michael Niedermayeravcodec/agm : Fix integer overflow with w/h
Fixes : negation of -2147483648 cannot be represented in type 'int' ; cast to an unsigned type to negate this value to itself
Fixes : 13999/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AGM_fuzzer-5644405991538688Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by : Paul B Mahol <onemda@gmail.com>
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>