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Participer à sa traduction
10 avril 2011Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
Actuellement MediaSPIP n’est disponible qu’en français et (...) -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)
Sur d’autres sites (9064)
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Python yt-dlp and ffmpeg error "merging of multiple formats but ffmpeg is not installed"
27 mai, par T Tea TieI am using the latest version of
yt-dlpwith Python 3.9.

I am trying to download a youtube video in mp4 format with outputname as the
youtubeid.mp4and with best resolution not more than 4K.

This is my Python code :


ytid = '4cDqaLxrt6Q'
url = 'https://www.youtube.com/watch?v='+ytid
output_filename = ytid+".mp4"
 
with YoutubeDL({'format': 'bestvideo[height<=?4K]+bestaudio/best', 'output': output_filename}) as ydl:
 ydl.download(url)`#TODO debug FFmpeg and check if outputname is ok


I expected to have an
.mp4file in my current working directory.

Then I installed the latest version of
FFmpegfromffmpeg-master-latest-win64-gpl.zipand putffmpeg.exe,ffplay.exeandffprobe.exein Scripts python folder (whereyt-dlp.exeis). I also installedffmpegusingpip install.

The
Tracebackis :



[youtube] Extracting URL : https://www.youtube.com/watch?v=4cDqaLxrt6Q
[youtube] 4cDqaLxrt6Q : Downloading webpage
[youtube] 4cDqaLxrt6Q : Downloading android player API JSON
[youtube] 4cDqaLxrt6Q : Downloading MPD manifest
[youtube] 4cDqaLxrt6Q : Downloading MPD manifest
[info] 4cDqaLxrt6Q : Downloading 1 format(s) : 243+251
ERROR : You have requested merging of multiple formats but ffmpeg is not installed. Aborting due to —abort-on-error
Traceback (most recent call last) :


File "C :\Users\t\OneDrive\Documents\Python Scripts\project\main.py", line 88, in 
ydl.download(url)


File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 3353, in download
self.__download_wrapper(self.extract_info)(


File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 3328, in wrapper
res = func(*args, **kwargs)


File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 1486, in extract_info
return self.__extract_info(url, self.get_info_extractor(key), download, extra_info, process)


File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 1497, in wrapper
return func(self, *args, **kwargs)


File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 1594, in __extract_info
return self.process_ie_result(ie_result, download, extra_info)


File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 1653, in process_ie_result
ie_result = self.process_video_result(ie_result, download=download)


File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 2767, in process_video_result
self.process_info(new_info)


File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 3189, in process_info
self.report_error(f'msg. Aborting due to —abort-on-error')


File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 1007, in report_error
self.trouble(f'self._format_err("ERROR :", self.Styles.ERROR) message', *args, **kwargs)


File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 947, in trouble
raise DownloadError(message, exc_info)


DownloadError : ERROR : You have requested merging of multiple formats but ffmpeg is not installed. Aborting due to —abort-on-error




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ffmpeg, how to add new audio (not mixing) in video
15 février 2016, par VetalllI used a command like :
ffmpeg -i video.avi -i audio.mp3 -vcodec codec -acodec codec output_video.avi -newaudioin latest version for adding new audio track to video (not mix). But i updated the ffmpeg to newest version
ffmpeg version git-2012-06-16-809d71dAnd now in this version the parameter "-newaudio" doesn’t work.
Tell me please how i can add new audio to my video(not mix) using ffmpeg.
p.s. sorry my English
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SDL2 won't play with more than 6 audio channels
13 juin 2020, par Hiko HaietoI am trying to stream (raw) video and audio from a capture device as part of my home media setup (with my pc acting similarly to a receiver in a typical home theatre setup), but the biggest problem I haven't been able to get past is that I haven't been able to get ffplay (using SDL2 as its audio backend) to work with all 8 channels in 7.1 streams - two simply get dropped, despite it recognising 8 channel input or me specifying a 7.1 layout.



I have been able to confirm that all 8 channels are present in the source by first using ffmpeg to save the output of a speaker test to a file and playing that back with both mplayer (which works) and ffplay (which doesn't). I also wrote some minimal code to play the audio directly through SDL's API with the same result, so it's not the fault of ffplay. I might simply use mplayer if it weren't for the fact that piping output from ffmpeg adds too much latency for real-time use. I am using libSDL version 2.0.12 and ffplay 4.2.3, both of which are the latest at the time of writing and are ostensibly supposed to support 7.1 audio.



Using output recorded from
speaker-test -c 8, I am using the following to play it back in mplayer :


mplayer -channels 8 -rawaudio channels=8 -format s16le -demuxer rawaudio speaker-test.pcm



and the following to play it back in ffplay :



ffplay -f s16le -ac 8 -af 'channelmap=channel_layout=7.1' speaker-test.pcm



No matter what I try, the two side channels get dropped. I couldn't figure out how to play raw pcm in SDL, so I repeated the same tests with wav output and used the following code to play it back :



#include <sdl2></sdl2>SDL.h>

int main(int argc, char **argv) {
 SDL_Init(SDL_INIT_AUDIO);
 SDL_AudioSpec wavSpec;
 Uint32 wavLength;
 Uint8 *wavBuffer;
 SDL_LoadWAV("speaker-test.wav", &wavSpec, &wavBuffer, &wavLength);
 SDL_AudioDeviceID deviceID = SDL_OpenAudioDevice(NULL, 0, &wavSpec, NULL, 0);
 SDL_QueueAudio(deviceID, wavBuffer, wavLength);
 SDL_PauseAudioDevice(deviceID, 0);
 SDL_Delay(30000);
 SDL_CloseAudioDevice(deviceID);
 SDL_FreeWAV(wavBuffer);
 SDL_Quit();
 return 0;
}



The above code exhibits the same behaviour of dropping the two additional side channels, despite it being the latest version of SDL that should have supported 7.1 for many releases now. Why might this be happening, and how might I fix it ?


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