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Autres articles (45)
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Gestion générale des documents
13 mai 2011, parMédiaSPIP ne modifie jamais le document original mis en ligne.
Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...) -
La file d’attente de SPIPmotion
28 novembre 2010, parUne file d’attente stockée dans la base de donnée
Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...) -
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.
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How can i combine a 1 video file (flv) with image file using ffmpeg ?
6 mars 2016, par user6964I have the following question. I need to combine 1 video (.Flv) to an image (png or jpg) generating a new video (.Flv) and then combine it with another video (.Flv). The flow should be as follows :
First, combine a video image where the video should play normally until the last second and then the image should appear.
Second, combining the resulting video with another video.
I tried to do the first step with the following command :
ffmpeg-i-loop_input movie_1.flv picture.png-i-acodec copy-shortest movie_output.flv
But the result is that the image is displayed over video.
Then try connecting 2 flv videos with the following command :
ffmpeg-i-i movie_2.flv output_final.flv movie_output.flv
But only shows 1 video in "output_final.flv".
Can you tell me I’m doing wrong in my command ?
Thank you.
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controlling the speed of the hls play list, generated by ffmpeg
27 mars 2024, par tamirgI have a ffmpeg process which the input is an rtsp stream, and the output is a m3u8 play list.


when i simply watches the rtsp input stream, the play speed is correct and everything works fine.
but when i play the created HLS playlist, it seems to play in a much faster speed.


The way i create the ffmpeg process :


_SEGMENT_FILE_FORMAT = 'output%d.ts'
output_dir_path = "C:\\Tempdir"


source = ffmpeg.input(
 'rtsp://myrtspserveraddress',
 rtsp_transport='tcp',
 fflags='nobuffer', 
 flags='low_delay' 
)

pipe = source.output(
 os.path.join(output_dir_path, _SEGMENT_FILE_FORMAT),
 **dict(vcodec='copy', video_bitrate='1000k'),
 copyts=None,
 f='segment', 
 segment_list_flags='live',
 segment_time=10,
 segment_list_size=20, 
 segment_wrap=20,

 segment_format='mpegts',
 segment_list=os.path.join(output_dir_path, "test_file"),
 segment_list_type='m3u8',
)



Which seems to create a list of "10 seconds" files, but the actual data in those files, is pretty much a 30 seconds video which simply plays much faster.


What exactly controls the "play speed" of the video, and how can i know why it plays faster, and control it so the play speed would be the actual speed matching the RTSP stream ?


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Revision 195061feda : Fix rectangular partition check in speed 1 Make encoder skip rectangular partit
30 septembre 2013, par Jingning HanChanged Paths :
Modify /vp9/encoder/vp9_encodeframe.c
Fix rectangular partition check in speed 1Make encoder skip rectangular partition check in speed 1 and above,
when early termination was triggered in partition split.
Thanks Guillaume (gmartres@) for catching this issue.This change makes bus_cif at 2000kbps speed 1 runtime goes down from
25612ms to 23438ms (about 9% speed-up), at the expense of -0.235%
performance down.Change-Id : I98613fad081a261d30d5fa206f934ca70601c180