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The Slip - Artworks
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (59)
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List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...) -
Contribute to documentation
13 avril 2011Documentation is vital to the development of improved technical capabilities.
MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
To contribute, register to the project users’ mailing (...) -
Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users.
Sur d’autres sites (4546)
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FFmpeg "Illegal instruction" Raspberry Pi Zero W
20 août 2019, par ErezMI’ve been struggling with having FFmpeg run on Pi Zero W, as a newbie I can’t say where the root of the problem whether its the compilation configuration of the FFmpeg or maybe the syntax of the command line itself..
The current configuration is :
Raspberry Pi Zero Wireless
Set GPU memory to 256Running OS :
Linux raspberrypi 4.19.66+ #1253 Thu Aug 15 11:37:30 BST 2019 armv6l GNU/Linux
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=raspbian
ID_LIKE=debian
No LSB modules are available.
Distributor ID: Raspbian
Description: Raspbian GNU/Linux 10 (buster)
Release: 10
Codename: busterFFmpeg version and configuration :
ffmpeg version N-94582-gd0fa1a58da Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8 (Raspbian 8.3.0-6+rpi1)
configuration: --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-omx --enable-omx-rpi --enable-nonfree
libavutil 56. 33.100 / 56. 33.100
libavcodec 58. 55.100 / 58. 55.100
libavformat 58. 31.101 / 58. 31.101
libavdevice 58. 9.100 / 58. 9.100
libavfilter 7. 58.100 / 7. 58.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Hyper fast Audio and Video encoderCommand to copy 30 seconds clip from the 10 second mark :
sudo ffmpeg -ss 00:00:10 -t 00:00:30 -i GOPR2546.MP4 -c:v libx264 -c:a copy out.MP4
The FFmpeg output :
ffmpeg version N-94582-gd0fa1a58da Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8 (Raspbian 8.3.0-6+rpi1)
configuration: --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-omx --enable-omx-rpi --enable-nonfree
libavutil 56. 33.100 / 56. 33.100
libavcodec 58. 55.100 / 58. 55.100
libavformat 58. 31.101 / 58. 31.101
libavdevice 58. 9.100 / 58. 9.100
libavfilter 7. 58.100 / 7. 58.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x210d360] Using non-standard frame rate 59/1
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'GOPR2546.MP4':
Metadata:
major_brand : mp41
minor_version : 538120216
compatible_brands: mp41
creation_time : 2019-08-20T11:09:41.000000Z
firmware : HD7.01.01.80.00
Duration: 00:01:00.84, start: 0.000000, bitrate: 45293 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 45043 kb/s, 59.94 fps, 59.94 tbr, 60k tbn, 119.88 tbc (default)
Metadata:
creation_time : 2019-08-20T11:09:41.000000Z
handler_name : GoPro AVC
encoder : GoPro AVC encoder
timecode : 11:20:21:32
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
Metadata:
creation_time : 2019-08-20T11:09:41.000000Z
handler_name : GoPro AAC
timecode : 11:20:21:32
Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
Metadata:
creation_time : 2019-08-20T11:09:41.000000Z
handler_name : GoPro TCD
timecode : 11:20:21:32
Stream #0:3(eng): Data: bin_data (gpmd / 0x646D7067), 41 kb/s (default)
Metadata:
creation_time : 2019-08-20T11:09:41.000000Z
handler_name : GoPro MET
Stream #0:4(eng): Data: none (fdsc / 0x63736466), 13 kb/s (default)
Metadata:
creation_time : 2019-08-20T11:09:41.000000Z
handler_name : GoPro SOS
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
Illegal instructionThe result is an empty out.MP4 file... I’ve tried different configuration but never got it to work.
the one minute input file i’m using to test can be downloaded from https://dl.dropboxusercontent.com/s/dxd285zrz6d57da/GOPR2546.MP4
Thank you all in advance !!
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Start of video is not labeled as "0" in QuickTime Video from GoPro
26 mars 2020, par John TerragnoliI’m trying to combine four GoPro videos into a single video, and then rotate it 90 degrees. However, the time scales on the bottom of the videos are all wrong. The videos are 17 minutes and 42 second. But the beginning time is labeled as 5:15:20:32 and the ending time is 5:33:01:32. It just looks really weird and I’d like to fix it. After I use ffmpeg to rotate and concatenate the videos, the problem persists. Could it possibly be fixed with Exiftool ?
ffmpeg -safe 0 -f concat -i list.txt -vcodec copy -acodec copy merged_videos.MP4
ffmpeg -i input.mov -vf "transpose=1" output.mov
Here is the exiftool information on one of the videos :
File Name : GOPR3023.MP4
Directory : .
File Size : 3.7 GB
File Modification Date/Time : 2018:04:12 14:56:16-05:00
File Access Date/Time : 2020:03:25 12:17:18-05:00
File Inode Change Date/Time : 2020:03:25 17:57:04-05:00
File Permissions : rwxrwxrwx
File Type : MP4
File Type Extension : mp4
MIME Type : video/mp4
Major Brand : MP4 v1 [ISO 14496-1:ch13]
Minor Version : 2013.10.18
Compatible Brands : mp41
Movie Data Size : 4001979951
Movie Data Offset : 28
Movie Header Version : 0
Create Date : 2018:04:12 14:38:32
Modify Date : 2018:04:12 14:38:32
Time Scale : 60000
Duration : 0:17:42
Preferred Rate : 1
Preferred Volume : 100.00%
Preview Time : 0 s
Preview Duration : 0 s
Poster Time : 0 s
Selection Time : 0 s
Selection Duration : 0 s
Current Time : 0 s
Next Track ID : 6
Firmware Version : HD5.03.02.51.00
Lens Serial Number : NAH6092300301117
Camera Serial Number Hash : 34676f2cdf49b86a1514817a93377bf7
Track Header Version : 0
Track Create Date : 2018:04:12 14:38:32
Track Modify Date : 2018:04:12 14:38:32
Track ID : 1
Track Duration : 0:17:42
Track Layer : 0
Track Volume : 0.00%
Image Width : 1920
Image Height : 1080
Graphics Mode : srcCopy
Op Color : 0 0 0
Compressor ID : avc1
Source Image Width : 1920
Source Image Height : 1080
X Resolution : 72
Y Resolution : 72
Compressor Name : GoPro AVC encoder
Bit Depth : 24
Color Representation : nclx 1 1 1
Video Frame Rate : 59.94
Time Code : 3
Balance : 0
Audio Format : mp4a
Audio Channels : 2
Audio Bits Per Sample : 16
Audio Sample Rate : 48000
Text Font : Unknown (21)
Text Face : Plain
Text Size : 10
Text Color : 0 0 0
Background Color : 65535 65535 65535
Font Name : Helvetica
Other Format : tmcd
Warning : [minor] The ExtractEmbedded option may find more tags in the movie data
Matrix Structure : 1 0 0 0 1 0 0 0 1
Media Header Version : 0
Media Create Date : 2018:04:12 14:38:32
Media Modify Date : 2018:04:12 14:38:32
Media Time Scale : 60000
Media Duration : 0:17:42
Handler Class : Media Handler
Handler Type : NRT Metadata
Handler Description : GoPro SOS
Gen Media Version : 0
Gen Flags : 0 0 0
Gen Graphics Mode : srcCopy
Gen Op Color : 0 0 0
Gen Balance : 0
Meta Format : fdsc
Image Size : 1920x1080
Megapixels : 2.1
Avg Bitrate : 30.1 Mbps
Rotation : 0Part 2
There is a pretty obvious "stutter" at the 17:42 mark where the two clips are combined. I’ve tried using ffmpeg and iMovie, but both give the same results. The GoPro broke up the event into multiple clips on it’s own so it seems weird that there would be any information missing. Is there any way to get rid of this stutter ?Thanks !
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FFMPEG : cut clips from a long video with "fast seek" while maintaining accuracy
15 août 2020, par japseowI have this 3 hour long video which consists of <1-5 seconds of black frames> — < clip > — <1-5 seconds of black frames> — < clip > — ...


I could successfully get the clip without the black frames with the slow seek, but it takes over 4 minutes just for seeking.


ffmpeg -y -i "C:\Users\user\Videos\obs\part1.mp4" -ss 4370.48 -to 4384.95 -c:a copy -c:v hevc_nvenc -rc vbr_hq -cq 19 -b:v 10000k -maxrate:v 12500k "C:\Users\user\Videos\obs\____delete1.mp4"


I tried using the fast seek which takes only 4 sec, but it includes a 4 sec blackframe chunk at the end of the video. The output that should've been 14 sec long became 18 sec.


ffmpeg -y -ss 4370.48 -i "C:\Users\user\Videos\obs\part1.mp4" -to 14.47 -c:a copy -c:v hevc_nvenc -rc vbr_hq -cq 19 -b:v 10000k -maxrate:v 12500k "C:\Users\user\Videos\obs\____delete2.mp4"


My video has around 640 clips so it's impractical to wait that long just for seeking, and it'll only get worse when I'll be seeking at around the 2+ hour mark.