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Autres articles (41)
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Le plugin : Podcasts.
14 juillet 2010, parLe problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
Types de fichiers supportés dans les flux
Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...) -
Soumettre améliorations et plugins supplémentaires
10 avril 2011Si vous avez développé une nouvelle extension permettant d’ajouter une ou plusieurs fonctionnalités utiles à MediaSPIP, faites le nous savoir et son intégration dans la distribution officielle sera envisagée.
Vous pouvez utiliser la liste de discussion de développement afin de le faire savoir ou demander de l’aide quant à la réalisation de ce plugin. MediaSPIP étant basé sur SPIP, il est également possible d’utiliser le liste de discussion SPIP-zone de SPIP pour (...) -
Automated installation script of MediaSPIP
25 avril 2011, parTo overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
The documentation of the use of this installation script is available here.
The code of this (...)
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How to convert raw H.264 stream from video call to mp4 file
30 mars 2015, par DanielI have captured a SIP point to point video call using wireshark and I used the program ’videosnarf’ on Ubuntu 12.04 to extract the raw H.264 stream from the PCAP. I am having some problems with ffmpeg when trying to convert it to MP4. Below is the ffprobe output :
[STREAM]
index=0
codec_name=h264
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
codec_type=video
codec_time_base=1/2400000
codec_tag_string=[0][0][0][0]
codec_tag=0x0000
width=704
height=396
has_b_frames=0
sample_aspect_ratio=1:1
display_aspect_ratio=16:9
pix_fmt=yuv420p
level=51
r_frame_rate=25/1
avg_frame_rate=25/1
time_base=1/1200000
start_time=N/A
duration=N/A
[/STREAM]Here is the command I used to generate the MP4 :
ffmpeg -f h264 -i H264-media-3.264 -vcodec copy output.mp4
When I transfer the file to my Windows PC, I can’t open the file in VLC. When opening in Windows Media Player (not sure the version but it’s on Windows 8) it plays but very quickly (almost as if it’s playing in fast forward. I also tried with :
ffmpeg -f h264 -i H264-media-3.264 -vcodec copy -r 25 output.mp4
I am able to play the raw H.264 stream using "MPC-HC" on Windows but I need it in MP4 format.
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How to convert raw H.264 stream from video call to mp4 file
13 février 2020, par DanielI have captured a SIP point to point video call using wireshark and I used the program ’videosnarf’ on Ubuntu 12.04 to extract the raw H.264 stream from the PCAP. I am having some problems with ffmpeg when trying to convert it to MP4. Below is the ffprobe output :
[STREAM]
index=0
codec_name=h264
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
codec_type=video
codec_time_base=1/2400000
codec_tag_string=[0][0][0][0]
codec_tag=0x0000
width=704
height=396
has_b_frames=0
sample_aspect_ratio=1:1
display_aspect_ratio=16:9
pix_fmt=yuv420p
level=51
r_frame_rate=25/1
avg_frame_rate=25/1
time_base=1/1200000
start_time=N/A
duration=N/A
[/STREAM]Here is the command I used to generate the MP4 :
ffmpeg -f h264 -i H264-media-3.264 -vcodec copy output.mp4
When I transfer the file to my Windows PC, I can’t open the file in VLC. When opening in Windows Media Player (not sure the version but it’s on Windows 8) it plays but very quickly (almost as if it’s playing in fast forward. I also tried with :
ffmpeg -f h264 -i H264-media-3.264 -vcodec copy -r 25 output.mp4
I am able to play the raw H.264 stream using "MPC-HC" on Windows but I need it in MP4 format.
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vaapi_h264 : Fix bit offset of slice data.
2 avril 2016, par Mark Thompsonvaapi_h264 : Fix bit offset of slice data.
Commit ca2f19b9cc37be509d85f05c8f902860475905f8 modified the meaning of
H264SliceContext.gb : it is now initialised at the start of the NAL unit
header, rather than at the start of the slice header. The VAAPI slice
decoder uses the offset after parsing to determine the offset of the
slice data in the bitstream, so with the changed meaning we no longer
need to add the extra byte to account for the NAL unit header because
it is now included directly.Signed-off-by : Luca Barbato <lu_zero@gentoo.org>