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  • Le plugin : Podcasts.

    14 juillet 2010, par

    Le 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 (...)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

Sur d’autres sites (3784)

  • How can I capture audio AND video simultenaous with ffmpeg from an USB capture device

    20 mai 2017, par oban

    I’m capturing a video by means of an USB Terratec Grabster AV350 (which is based on the em2860 chip).

    I don’t succeed to get the audio when it is played . If I play the captured video with vlc or with ffplay I got only 3 seconds sound and then a silence for the rest of the video ...

    During the capturing I don’t get any errors. At the end it indicates the size of the video and audio captured ....

    I’m using the ffmpeg command for this :

    ffmpeg -f alsa -ac 2 -i hw:3 -f video4linux2 -i /dev/video0 -acodec ac3 -ab 128k -vcodec mpeg4 -b 6000k -r 25 test5.avi

    The log is :

    [alsa @ 0x9bcd420]Estimating duration from bitrate, this may be inaccurate
    
Input #0, alsa, from 'hw:3':
    
Duration: N/A, start: 69930.998994, bitrate: N/A
    
Stream #0.0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
    
[video4linux2 @ 0x9bf5d30]Estimating duration from bitrate, this may be inaccurate
    
Input #1, video4linux2, from '/dev/video0':
    
Duration: N/A, start: 1307111377.654173, bitrate: -2147483 kb/s
    
Stream #1.0: Video: rawvideo, yuyv422, 720x576, -2147483 kb/s, 1000k tbr, 1000k tbn, 1000k tbc
    
[ac3 @ 0x9bf9590]No channel layout specified. The encoder will guess the layout, but it might be incorrect.
    
Output #0, avi, to 'test5.avi':
    
Metadata:
    
ISFT : Lavf52.64.2
    
Stream #0.0: Video: mpeg4, yuv420p, 720x576, q=2-31, 6000 kb/s, 25 tbn, 25 tbc
    
Stream #0.1: Audio: ac3, 44100 Hz, stereo, s16, 128 kb/s
    
Stream mapping:
    
Stream #1.0 -> #0.0
    
Stream #0.0 -> #0.1
    
Press [q] to stop encoding
    
frame= 1283 fps= 25 q=2.3 Lsize= 38677kB time=51.32 bitrate=6173.9kbits/s
    
**video:37755kB audio:846kB** global headers:0kB muxing overhead 0.198922%

    If I reduce the command for only capturing audio, then the audio file can be played successfully :

    ffmpeg -f alsa -ac 2 -i hw:3,0 -acodec ac3 -ab 128k test5.avi

    [alsa @ 0x8ede420]Estimating duration from bitrate, this may be inaccurate
    
Input #0, alsa, from 'hw:3,0':
    
Duration: N/A, start: 70395.998935, bitrate: N/A
    
Stream #0.0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
    
[ac3 @ 0x8eebac0]No channel layout specified. The encoder will guess the layout, but it might be incorrect.
    
Output #0, avi, to 'test5.avi':
    
Metadata:
    
ISFT : Lavf52.64.2
    
Stream #0.0: Audio: ac3, 44100 Hz, stereo, s16, 128 kb/s
    
Stream mapping:
    
Stream #0.0 -> #0.0
    
Press [q] to stop encoding
    
size= 227kB time=13.62 bitrate= 136.8kbits/s
    
**video:0kB audio:213kB** global headers:0kB muxing overhead 6.902375%

    If I run the command for only video capturing then vlc or ffplay can play the video successfully :

    ffmpeg -f video4linux2 -i /dev/video0 -vcodec mpeg4 -b 12000k -r 25 test5.avi

    [video4linux2 @ 0x91d6420]Estimating duration from bitrate, this may be inaccurate
    
Input #0, video4linux2, from '/dev/video0':
    
Duration: N/A, start: 1307112044.025687, bitrate: -2147483 kb/s
    
Stream #0.0: Video: rawvideo, yuyv422, 720x576, -2147483 kb/s, 1000k tbr, 1000k tbn, 1000k tbc
    
Output #0, avi, to 'test5.avi':
    
Metadata:
    
ISFT : Lavf52.64.2
    
Stream #0.0: Video: mpeg4, yuv420p, 720x576, q=2-31, 12000 kb/s, 25 tbn, 25 tbc
    
Stream mapping:
    
Stream #0.0 -> #0.0
    
Press [q] to stop encoding
    
frame= 388 fps= 25 q=2.0 Lsize= 12963kB time=15.52 bitrate=6842.5kbits/s
    
**video:12949kB audio:0kB** global headers:0kB muxing overhead 0.114584%

    Strange behaviour I noticed is that when I tried capturing video and audio, I can not capture the audio afterwards any more,
    unless I unplug the AV350 first.

    The G350 is located at card 3 :

    htpc@htpc-01:/proc/asound/G350/pcm0c$ more info
    
card: 3
    
device: 0
    
subdevice: 0
    
stream: CAPTURE
    
id: USB Audio
    
name: USB Audio
    
subname: subdevice #0
    
class: 0
    
subclass: 0
    
subdevices_count: 1
    
subdevices_avail: 1

    The OS is a Linux 2.6.38-8-generic with the Ubuntu Natty Narwhal version

    Any help on how to tackle this issue would be great ....

    Thanks !

  • How can I capture audio AND video simultenaous with ffmpeg from an USB capture device

    22 octobre 2018, par oban

    I’m capturing a video by means of an USB Terratec Grabster AV350 (which is based on the em2860 chip).

    I don’t succeed to get the audio when it is played . If I play the captured video with vlc or with ffplay I got only 3 seconds sound and then a silence for the rest of the video ...

    During the capturing I don’t get any errors. At the end it indicates the size of the video and audio captured ....

    I’m using the ffmpeg command for this :

    ffmpeg -f alsa -ac 2 -i hw:3 -f video4linux2 -i /dev/video0 -acodec ac3 -ab 128k -vcodec mpeg4 -b 6000k -r 25 test5.avi

    The log is :

    [alsa @ 0x9bcd420]Estimating duration from bitrate, this may be inaccurate
    
Input #0, alsa, from 'hw:3':
    
Duration: N/A, start: 69930.998994, bitrate: N/A
    
Stream #0.0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
    
[video4linux2 @ 0x9bf5d30]Estimating duration from bitrate, this may be inaccurate
    
Input #1, video4linux2, from '/dev/video0':
    
Duration: N/A, start: 1307111377.654173, bitrate: -2147483 kb/s
    
Stream #1.0: Video: rawvideo, yuyv422, 720x576, -2147483 kb/s, 1000k tbr, 1000k tbn, 1000k tbc
    
[ac3 @ 0x9bf9590]No channel layout specified. The encoder will guess the layout, but it might be incorrect.
    
Output #0, avi, to 'test5.avi':
    
Metadata:
    
ISFT : Lavf52.64.2
    
Stream #0.0: Video: mpeg4, yuv420p, 720x576, q=2-31, 6000 kb/s, 25 tbn, 25 tbc
    
Stream #0.1: Audio: ac3, 44100 Hz, stereo, s16, 128 kb/s
    
Stream mapping:
    
Stream #1.0 -> #0.0
    
Stream #0.0 -> #0.1
    
Press [q] to stop encoding
    
frame= 1283 fps= 25 q=2.3 Lsize= 38677kB time=51.32 bitrate=6173.9kbits/s
    
**video:37755kB audio:846kB** global headers:0kB muxing overhead 0.198922%

    If I reduce the command for only capturing audio, then the audio file can be played successfully :

    ffmpeg -f alsa -ac 2 -i hw:3,0 -acodec ac3 -ab 128k test5.avi

    [alsa @ 0x8ede420]Estimating duration from bitrate, this may be inaccurate
    
Input #0, alsa, from 'hw:3,0':
    
Duration: N/A, start: 70395.998935, bitrate: N/A
    
Stream #0.0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
    
[ac3 @ 0x8eebac0]No channel layout specified. The encoder will guess the layout, but it might be incorrect.
    
Output #0, avi, to 'test5.avi':
    
Metadata:
    
ISFT : Lavf52.64.2
    
Stream #0.0: Audio: ac3, 44100 Hz, stereo, s16, 128 kb/s
    
Stream mapping:
    
Stream #0.0 -> #0.0
    
Press [q] to stop encoding
    
size= 227kB time=13.62 bitrate= 136.8kbits/s
    
**video:0kB audio:213kB** global headers:0kB muxing overhead 6.902375%

    If I run the command for only video capturing then vlc or ffplay can play the video successfully :

    ffmpeg -f video4linux2 -i /dev/video0 -vcodec mpeg4 -b 12000k -r 25 test5.avi

    [video4linux2 @ 0x91d6420]Estimating duration from bitrate, this may be inaccurate
    
Input #0, video4linux2, from '/dev/video0':
    
Duration: N/A, start: 1307112044.025687, bitrate: -2147483 kb/s
    
Stream #0.0: Video: rawvideo, yuyv422, 720x576, -2147483 kb/s, 1000k tbr, 1000k tbn, 1000k tbc
    
Output #0, avi, to 'test5.avi':
    
Metadata:
    
ISFT : Lavf52.64.2
    
Stream #0.0: Video: mpeg4, yuv420p, 720x576, q=2-31, 12000 kb/s, 25 tbn, 25 tbc
    
Stream mapping:
    
Stream #0.0 -> #0.0
    
Press [q] to stop encoding
    
frame= 388 fps= 25 q=2.0 Lsize= 12963kB time=15.52 bitrate=6842.5kbits/s
    
**video:12949kB audio:0kB** global headers:0kB muxing overhead 0.114584%

    Strange behaviour I noticed is that when I tried capturing video and audio, I can not capture the audio afterwards any more,
    unless I unplug the AV350 first.

    The G350 is located at card 3 :

    htpc@htpc-01:/proc/asound/G350/pcm0c$ more info
    
card: 3
    
device: 0
    
subdevice: 0
    
stream: CAPTURE
    
id: USB Audio
    
name: USB Audio
    
subname: subdevice #0
    
class: 0
    
subclass: 0
    
subdevices_count: 1
    
subdevices_avail: 1

    The OS is a Linux 2.6.38-8-generic with the Ubuntu Natty Narwhal version

    Any help on how to tackle this issue would be great ....

    Thanks !

  • How can I capture audio AND video simultenaous with ffmpeg from a linux USB capture device

    7 juin 2019, par oban

    I’m capturing a video by means of an USB Terratec Grabster AV350 (which is based on the em2860 chip).

    I don’t succeed to get the audio when it is played . If I play the captured video with vlc or with ffplay I got only 3 seconds sound and then a silence for the rest of the video ...

    During the capturing I don’t get any errors. At the end it indicates the size of the video and audio captured ....

    I’m using the ffmpeg command for this :

    ffmpeg -f alsa -ac 2 -i hw:3 -f video4linux2 -i /dev/video0 -acodec ac3 -ab 128k -vcodec mpeg4 -b 6000k -r 25 test5.avi

    The log is :

    [alsa @ 0x9bcd420]Estimating duration from bitrate, this may be inaccurate
    
Input #0, alsa, from 'hw:3':
    
Duration: N/A, start: 69930.998994, bitrate: N/A
    
Stream #0.0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
    
[video4linux2 @ 0x9bf5d30]Estimating duration from bitrate, this may be inaccurate
    
Input #1, video4linux2, from '/dev/video0':
    
Duration: N/A, start: 1307111377.654173, bitrate: -2147483 kb/s
    
Stream #1.0: Video: rawvideo, yuyv422, 720x576, -2147483 kb/s, 1000k tbr, 1000k tbn, 1000k tbc
    
[ac3 @ 0x9bf9590]No channel layout specified. The encoder will guess the layout, but it might be incorrect.
    
Output #0, avi, to 'test5.avi':
    
Metadata:
    
ISFT : Lavf52.64.2
    
Stream #0.0: Video: mpeg4, yuv420p, 720x576, q=2-31, 6000 kb/s, 25 tbn, 25 tbc
    
Stream #0.1: Audio: ac3, 44100 Hz, stereo, s16, 128 kb/s
    
Stream mapping:
    
Stream #1.0 -> #0.0
    
Stream #0.0 -> #0.1
    
Press [q] to stop encoding
    
frame= 1283 fps= 25 q=2.3 Lsize= 38677kB time=51.32 bitrate=6173.9kbits/s
    
**video:37755kB audio:846kB** global headers:0kB muxing overhead 0.198922%

    If I reduce the command for only capturing audio, then the audio file can be played successfully :

    ffmpeg -f alsa -ac 2 -i hw:3,0 -acodec ac3 -ab 128k test5.avi

    [alsa @ 0x8ede420]Estimating duration from bitrate, this may be inaccurate
    
Input #0, alsa, from 'hw:3,0':
    
Duration: N/A, start: 70395.998935, bitrate: N/A
    
Stream #0.0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
    
[ac3 @ 0x8eebac0]No channel layout specified. The encoder will guess the layout, but it might be incorrect.
    
Output #0, avi, to 'test5.avi':
    
Metadata:
    
ISFT : Lavf52.64.2
    
Stream #0.0: Audio: ac3, 44100 Hz, stereo, s16, 128 kb/s
    
Stream mapping:
    
Stream #0.0 -> #0.0
    
Press [q] to stop encoding
    
size= 227kB time=13.62 bitrate= 136.8kbits/s
    
**video:0kB audio:213kB** global headers:0kB muxing overhead 6.902375%

    If I run the command for only video capturing then vlc or ffplay can play the video successfully :

    ffmpeg -f video4linux2 -i /dev/video0 -vcodec mpeg4 -b 12000k -r 25 test5.avi

    [video4linux2 @ 0x91d6420]Estimating duration from bitrate, this may be inaccurate
    
Input #0, video4linux2, from '/dev/video0':
    
Duration: N/A, start: 1307112044.025687, bitrate: -2147483 kb/s
    
Stream #0.0: Video: rawvideo, yuyv422, 720x576, -2147483 kb/s, 1000k tbr, 1000k tbn, 1000k tbc
    
Output #0, avi, to 'test5.avi':
    
Metadata:
    
ISFT : Lavf52.64.2
    
Stream #0.0: Video: mpeg4, yuv420p, 720x576, q=2-31, 12000 kb/s, 25 tbn, 25 tbc
    
Stream mapping:
    
Stream #0.0 -> #0.0
    
Press [q] to stop encoding
    
frame= 388 fps= 25 q=2.0 Lsize= 12963kB time=15.52 bitrate=6842.5kbits/s
    
**video:12949kB audio:0kB** global headers:0kB muxing overhead 0.114584%

    Strange behaviour I noticed is that when I tried capturing video and audio, I can not capture the audio afterwards any more,
    unless I unplug the AV350 first.

    The G350 is located at card 3 :

    htpc@htpc-01:/proc/asound/G350/pcm0c$ more info
    
card: 3
    
device: 0
    
subdevice: 0
    
stream: CAPTURE
    
id: USB Audio
    
name: USB Audio
    
subname: subdevice #0
    
class: 0
    
subclass: 0
    
subdevices_count: 1
    
subdevices_avail: 1

    The OS is a Linux 2.6.38-8-generic with the Ubuntu Natty Narwhal version

    Any help on how to tackle this issue would be great ....

    Thanks !

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