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Autres articles (22)
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L’utiliser, en parler, le critiquer
10 avril 2011La première attitude à adopter est d’en parler, soit directement avec les personnes impliquées dans son développement, soit autour de vous pour convaincre de nouvelles personnes à l’utiliser.
Plus la communauté sera nombreuse et plus les évolutions seront rapides ...
Une liste de discussion est disponible pour tout échange entre utilisateurs. -
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 (...) -
Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
Sur d’autres sites (4975)
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avcodec/mpeg12 : Use ff_rl_mpeg1.table_(run|level) directly
22 octobre 2022, par Andreas Rheinhardt -
avcodec/speedhqdec : Use ff_rl_speedhq.table_(run|level) directly
22 octobre 2022, par Andreas Rheinhardt -
ffmpeg h264_nvenc force level=41
9 octobre 2022, par MauroI have some videos at 1080p 60fps.


These videos are with level=50 and my TV plays only videos up to level=41, so I want to convert my videos using ffmpeg and hardware acceleration.


I have a Windows 10 machine with ffmpeg and Geforce 2060, so I try run below command :


ffmpeg -i video.mp4 -vcodec h264_nvenc -preset slow -level 4.1 output.mp4



but I get this error :


[h264_nvenc @ 000001dd43cd07c0] InitializeEncoder failed : invalid param (8) : Invalid Level.
Error initializing output stream 0:0 — Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height


When I try to run the same command above using "-level 4.2" or above, the encode process works ! But it is useless for me, because I really need "-level 4.1".


I noticed that if use libx264 instead of h264_nvenc, the encode process accepts "-level 4.1", but it take too long to complete (I want to enjoy hardware acceleration instead of CPU).


How can I force h264_nvenc to accept "level=4.1" ?