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Autres articles (48)
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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 (...) -
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" ; -
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 (5420)
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Localization : Missing french step translation (#1928)
28 janvier 2017, par tchiotludoLocalization : Missing french step translation (#1928)
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ffmpeg.c - drain all decoded frames during stream_loop flush
15 mars 2018, par Gyan Doshiffmpeg.c - drain all decoded frames during stream_loop flush
When a decoded stream is being looped, after each post-EOF rewind,
decoders are flushed in seek_to_start(). This only drains 1 frame, and
thus the output has a few frames missing at the tail of each iteration
except the last.With this patch, process_input is looped till process_input_packet
reaches EOF.Fixes #7081
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
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HIK IP cameras changes chunks length while switching from day to night mode
22 septembre 2022, par Klaus-Peter EckertWe are using ffmpeg to create a video playlist consisting of 2 sec chunks send by a HIKVISION DS-2CD2143G0-I IP camera. When the camera switches from day mode to night mode the length of the chunks changes from 2 to 4 sec. When the camera switches back to day mode the chunks again have a length of 2 sec.
This is an excerpt of a playlist :


chunk-stream0-17750.m4s
#EXTINF:2.000000,
#EXT-X-PROGRAM-DATE-TIME:2022-09-19T22:26:59.418+0200
chunk-stream0-17751.m4s
#EXTINF:2.793047,
#EXT-X-PROGRAM-DATE-TIME:2022-09-19T22:27:01.418+0200
chunk-stream0-17752.m4s
#EXTINF:3.998984,
#EXT-X-PROGRAM-DATE-TIME:2022-09-19T22:27:04.211+0200
chunk-stream0-17753.m4s
#EXTINF:3.998984,
#EXT-X-PROGRAM-DATE-TIME:2022-09-19T22:27:08.210+0200
chunk-stream0-17754.m4s


This is the call of ffmpeg (with APP_RECORDING_SEG_DUR = 2) :


window_size = int(Settings.APP_RECORDING_PRE_DUR / Settings.APP_RECORDING_SEG_DUR)
# Command to start ffmpeg dash muxer
cmd = ''
cmd += f'ffmpeg -loglevel fatal -stimeout 1000000 -rtsp_transport tcp -i "{rtsp_url}" '
cmd += f'-map 0:0 -c:v:0 copy -movflags frag_keyframe+empty_moov -an -f dash -use_template 1 '
cmd += f'-use_timeline 0 -index_correction 0 -seg_duration {Settings.APP_RECORDING_SEG_DUR} '
cmd += f'-hls_playlist 1 -dash_segment_type mp4 -streaming 1 -remove_at_exit 1 '
cmd += f'-window_size {window_size} -extra_window_size {20 / Settings.APP_RECORDING_SEG_DUR} '
 cmd += f'{(self._target_path / playlist).as_posix()}'


Has anybody observed a similar behaviour and knows how to stop the camera from changing the size of the video chunks ?


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