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Autres articles (56)
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Encodage et transformation en formats lisibles sur Internet
10 avril 2011MediaSPIP transforme et ré-encode les documents mis en ligne afin de les rendre lisibles sur Internet et automatiquement utilisables sans intervention du créateur de contenu.
Les vidéos sont automatiquement encodées dans les formats supportés par HTML5 : MP4, Ogv et WebM. La version "MP4" est également utilisée pour le lecteur flash de secours nécessaire aux anciens navigateurs.
Les documents audios sont également ré-encodés dans les deux formats utilisables par HTML5 :MP3 et Ogg. La version "MP3" (...) -
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 -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...)
Sur d’autres sites (11675)
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How to install ffmpeg on linux(CentOs 6.8) dedicated server [on hold]
27 septembre 2016, par Kiran PardeshiI am trying to install ffmpeg on linux(CentOs 6.8) dedicated server.
I used below links for reference but could not succeed.https://www.webhostpython.com/billing/knowledgebase.php?ction=displayarticle&id=10
https://chrisjean.com/install-ffmpeg-and-ffmpeg-php-on-centos-easily/
http://wiki.razuna.com/display/ecp/FFMpeg+Installation+on+CentOS+and+RedHat
Please suggest me how to install ??
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FFMPEG throwing error nb_cpb invalid, what went wrong ?
21 août 2023, par qkhanhproI am trying to play with this file from Kodi sample page https://kodi.wiki/view/Samples




HDR10+ Profile A HEVC 10-bit 23.976 Sample (in MKV with DTS:X audio)




The ffmpeg command throw this error on every line, with the number always being 93 for multiple different output video codec


nb_cpb 93 invalid.0 q=0.0 size= 0kB time=00:00:00.65 bitrate= 0.5kbits/s speed=3.95x 


A search point to this source file https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/hevc_ps.c


if (!hdr->flags.low_delay_hrd_flag) {
 hdr->cpb_cnt_minus1[i] = get_ue_golomb_long(gb);
 if (hdr->cpb_cnt_minus1[i] > 31) {
 av_log(NULL, AV_LOG_ERROR, "nb_cpb %d invalid\n",
 hdr->cpb_cnt_minus1[i]);
 return AVERROR_INVALIDDATA;
 }
}


What went wrong ?


ffmpeg -i E:\HDR.mkv -c:v libx265 -c:a copy "HDR.mp4" 

ffmpeg -i E:\HDR.mkv -c:v hevc_nvenc -c:a copy "HDR.mp4" 


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rtl_fm piped to ffmpeg for udp stream
4 novembre 2014, par user3936148rtl_fm piped to ffmpeg for udp stream
Using Windows 7. I would like to pipe the rtl_fm standard out (pipe) to ffmpeg and udp stream it to an ip address. I have downloaded and installed rlt_sdr and other files and I have also installed sox. The console example given with the rtl_fm application using sox to play the radio station is below :
rtl_fm -f 106500000 -M wbfm -s 200000 -r 48000 -l 0 -E deemp -g 50 - | play -r 48000 -t s16 -L -c 1 -
This works great, using sox.
Update :
Below works with ffplay sounds ok not great..
rtl_fm -f 106500000 -M wbfm -s 200000 -r 48000 -l 0 -E deemp -g 80- | ffplay -f s16le -ar 48000 -ac 1 -
I would like to use ffmpeg instead, below is a non working example (just to give you an idea)
rtl_fm -f 106500000 -M wbfm -s 200000 -r 48000 -l 0 -E deemp -g 50 - | ffmpeg -i - -f s16le -ar 48000 -ac 1 -acodec libmp3lame -ab 24k -ar 22050 -f mpegts udp ://192.168.1.196:1234 -
useful links :
http://kmkeen.com/rtl-demod-guide/
http://sdr.osmocom.org/trac/wiki/rtl-sdr
Thank you for your help
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