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Autres articles (95)
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Mise à jour de la version 0.1 vers 0.2
24 juin 2013, parExplications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...) -
Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
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Ecrire une actualité
21 juin 2013, parPrésentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
Vous pouvez personnaliser le formulaire de création d’une actualité.
Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...)
Sur d’autres sites (16146)
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avfilter's anull says "Rematrix is needed between stereo and 0 channels but there is not enough information to do it"
24 mai 2017, par kuanyuiI’m trying to write a transcoder according to FFMpeg’s official example with ffmpeg 3.2.4 (official prebuild Win32), and try to transcode a video with stereo audio stream source (from
avformat
’sdshow
).In the example code, which passes
anull
intoavfilter_graph_parse_ptr()
for audio stream, and"time_base=1/44100:sample_rate=44100:sample_fmt=s16:channels=2:channel_layout=0x3"
is passed intoavfilter_graph_create_filter()
, occurs error in the followingavfilter_graph_config()
:[auto-inserted scaler 0 @ 32f77600] w:iw h:ih flags:'bilinear' interl:0
[Parsed_null_0 @ 2e9d79a0] auto-inserting filter 'auto-inserted scaler 0' between the filter 'in' and the filter 'Parsed_null_0'
[swscaler @ 3331bfe0] deprecated pixel format used, make sure you did set range correctly
[auto-inserted scaler 0 @ 32f77600] w:1920 h:1080 fmt:yuvj422p sar:1/1 -> w:1920 h:1080 fmt:yuv420p sar:1/1 flags:0x2
[libmp3lame @ 2e90a360] Channel layout not specified
[in @ 3866e8a0] tb:1/44100 samplefmt:s16 samplerate:44100 chlayout:0x3
[Parsed_anull_0 @ 330e8820] auto-inserting filter 'auto-inserted resampler 0' between the filter 'in' and the filter 'Parsed_anull_0'
[auto-inserted resampler 0 @ 330e8dc0] [SWR @ 3809b620] Rematrix is needed between stereo and 0 channels but there is not enough information to do it
[auto-inserted resampler 0 @ 330e8dc0] Failed to configure output pad on auto-inserted resampler 0I’ve googled for days but didn’t find any clue for it. Doesn’t what
anull
do is only "Pass the audio source unchanged to the output", why libav want to resample stereo to 0 channel ? What’s going wrong ? -
ffmpeg IP camera unable to record
14 mai 2021, par trycatch22I am using an Amcrest POE camera. I have assigned it a static IP which I am able to confirm by logging into it via the browser. Its IP is 192.168.1.200.


I tried following the instructions in this link but couldn't get it to work. I get :


http://admin:admin@192.168.1.200/dd-a End of file



The official ffmpeg documentation does not talk about -segment_time or -segment_format. What is the ffmepg command to grab a stream for a fixed duration and write it to an .mp4 file ?


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FFMPEG capabilities
11 juillet 2012, par kerim yucelI currently have an algorithm which basically processes every preview frames. I have tried to capture the video using MediaRecorder of SDK, however, apparently I can't access the preview frames while MediaRecorder is capturing the video.
As far as I know, this could be achieved using NDK tools, even though NDK itself does not provide an official API to handle video recording. I know ffmpeg is ported to android and preferred by most of the developers. However, I have just started to develop using NDK and ffmpeg as well.
I just wonder if ffmpeg supports processing the frames (which already is developed)and most importantly, recording the video.
Thanks a lot.