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Autres articles (30)
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Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
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Gestion des droits de création et d’édition des objets
8 février 2011, parPar défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;
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Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...)
Sur d’autres sites (6211)
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как сделать 8 d музыку -> ffmpeg [closed]
3 janvier 2023, par имя фамилияВсех приветствую, подскажите как через ffmpeg создать трек 8D
8D музыка это - метод постобработки аудиозаписи, когда диджеи берут уже существующий трек и микшируют его, создавая эффект движения звука вокруг слушателя.
По сути, 8D-аудио эмулирует звучание surround-формата Ambisonics. Последний подразумевает, что слушатель находится в центре «акустической сферы», по краям которой расставлены источники звука. (на одном форуме спросил что такое 8D)


Писал на форуме, там не знаю решения, пробовал найти в открытых источниках, но видимо таким вопросом не задавались


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How to to add additional metadata to individual frames, DDB's, when creating an AVI file with ffmpeg
6 décembre 2019, par Totte KarlssonI’m creating avi videos from device dependent bitmaps, DDB’s.
The pipeline is quite simple, a GigE camera provides frame by frame, and each frame, a DDB, is piped to a ffmpeg process creating a final AVI file, using h264 compression.
These videos are scientific in nature, and we would like to store/embed experimental hardware information, such as the states of a few digital lines, with each frame.
This information need to be available in the final avi videoQuestion is, is this possible ?
Looking at this : https://docs.microsoft.com/en-us/windows/win32/api/wingdi/ns-wingdi-bitmap it does not seem that adding additional data to the DDB themselves is possible, but I’m not sure.
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Separate simultaneously changing regions of video into individual videos
17 juillet 2019, par Elle FieGiven a single video stream (up to 4K resolution), where only small displayed portions may change, I’d like to identify these changing sections and create separate video streams, one for each changing section of the input video stream, in real time.
Note that this is spatial extraction, not time slicing !
Q1 : Is there a better name to address this process ?
Q2 : Is this an already solved problem ?
It seems ImageMagick’s Compare program supports diffing two images, which I can process to identify regions as coordinates for an ffmpeg crop (launched in parallel for each discovered diff region), but this method relies on having a PNG stream to avoid false positive diffs due to lossy encoding. Also, too slow to happen in real time.
Q3 : Is there any way ffmpeg can dump out the causal regions influencing scene-change detection ?
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