Recherche avancée
Autres articles (47)
-
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
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 (4250)
-
Unable to find a suitable output format for 'ffmpeg' I/flutter (29205) : ffmpeg : Invalid argument
24 juillet 2020, par Abhijit RajmaneI'm trying to mix two audio files using flutter_ffmpeg : 0.2.10 but I get


[NULL @ 0xd77d4400] Unable to find a suitable output format for 'ffmpeg'
I/flutter (29205): ffmpeg: Invalid argument

code : 
String file1= _localPath+"/file1.m4a";
String file2= _localPath+"/file2.mp3";
String output= _localPath+"/abhijit.wav";

String finalPath= "ffmpeg -i "+ file1 +" -i "+file2+" -filter_complex amix=inputs=2:duration=first:dropout_transition=0 "+output;

console ffmpeg's message...
I/flutter (29205): libavutil 56. 38.100 / 56. 38.100
I/flutter (29205): libavcodec 58. 65.102 / 58. 65.102
I/flutter (29205): libavformat 58. 35.101 / 58. 35.101
I/flutter (29205): libavdevice 58. 9.103 / 58. 9.103
I/flutter (29205): libavfilter 7. 70.101 / 7. 70.101
I/flutter (29205): libswscale 5. 6.100 / 5. 6.100
I/flutter (29205): libswresample 3. 6.100 / 3. 6.100
I/flutter (29205): Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Android/data/com.arthenica.flutter.ffmpeg.FlutterFFmpegExample/files/Download/file1.m4a':
I/flutter (29205): Metadata:
I/flutter (29205): major_brand : mp42
I/flutter (29205): minor_version : 1
I/flutter (29205): compatible_brands: isommp41mp42
I/flutter (29205): creation_time : 2020-07-09T15:42:47.000000Z
I/flutter (29205): Duration: 00:12:12.26, start: 0.000000, bitrate: 61 kb/s
I/flutter (29205): Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 60 kb/s (default)
I/flutter (29205): Metadata:
I/flutter (29205): creation_time : 2020-07-09T15:42:47.000000Z
I/flutter (29205): handler_name : Core Media Audio
I/flutter (29205): Input #1, mp3, from '/storage/emulated/0/Android/data/com.arthenica.flutter.ffmpeg.FlutterFFmpegExample/files/Download/file2.mp3':
I/flutter (29205): Metadata:
I/flutter (29205): artist : SoundHelix
I/flutter (29205): genre : Techno
I/flutter (29205): encoder : Lavf58.20.100
I/flutter (29205): Duration: 00:00:23.12, start: 0.011995, bitrate: 192 kb/s
I/flutter (29205): Stream #1:0: Audio: mp3, 44100 Hz, stereo, fltp, 192 kb/s
I/flutter (29205): Metadata:
I/flutter (29205): encoder : Lavf
I/flutter (29205): [NULL @ 0xd77d4400] Unable to find a suitable output format for 'ffmpeg'
I/flutter (29205): ffmpeg: Invalid argument
I/flutter (29205): "
I/flutter (29205): New FFmpeg pipe: /data/user/0/com.arthenica.flutter.ffmpeg.FlutterFFmpegExample/cache/mf_pipe_7
I/flutter (29205): FFmpeg process exited with rc 1


Please check command of FFmpeg and suggest me if any correction occur, Unable to find a suitable output format for 'ffmpeg' I/flutter (29205) : ffmpeg : Invalid argument
I have no idea about this error please help me


-
How to initialize the AV format context from NetworkStream rather than url ?
23 juillet 2020, par AhmadI'm using FFmpeg.AutoGen to encode catpured frames :
https://github.com/Ruslan-B/FFmpeg.AutoGen


I send the encoded packets through NetworkStream to another program using TCP Client/Server application, using this code :


//Send size and encoded packet
 _stream.Write(BitConverter.GetBytes(pPacket->size), 0, 4);
 using (var packetStream = new UnmanagedMemoryStream(pPacket->data, pPacket->size)) 
 packetStream.CopyTo(_stream);


At the server-side, after UTF8 encoding, I receive content like this :




gd ?r@ ?/ ?a 21 ?
h?C?,? ????E???H??,? ?#??x264 - core 160 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=1 ref=16 deblock=1:0:0 analyse=0x3:0x133 me=umh subme=10 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=24 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=11 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=8 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=60 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 ? e?? ??S?T????M?.O ??Ea???Q?OI??X?????[?P???42=h??M?K? ??{?@c;?t???Ke?>?????2 ?? ?\qXEvg ???U A ?X ??q/(?? ?L ?_c ?g ?X ?c(To ?k ?Y ?-F ???R ?] ??U ?
 ;|=r ????\U ???2 ?g ??> ??½ ?7 ?A ?1W9 ???A ?? ?_L ??P ?) ?M ????q/ ?L ??) : ??< ??8d/* ? ?^ ??} ?B ?H ?_8C[y ???CY ?QM(J ???1<3% ?K ?F ;Q3Q ????
 ??jyJ" ???y]k ?m ?^} ???S ????h ?3 ????EP ???pw ???q ?jKp ???h ?????



My problem is, how to initialize the AV format context with this data, and decode the received packet to recover the original frame ?


_pFormatContext = ffmpeg.avformat_alloc_context();
ffmpeg.avformat_open_input(&pFormatContext, url, null, null).ThrowExceptionIfError();


As problem exactly is, ffmpeg.avformat_open_input takes URL as an input, not byte[]. If _pFormatContext can be initialized using the received data, things are resolved, but HOW ?


-
ffmpeg segmentation filter don't works with strftime filename template
24 juillet 2020, par Ksnadr RenderonI try to run ffmpeg with segment filter and timestamp filename template :


ffmpeg -f v4l2 -framerate 30 -video_size 960x720 -i /dev/video0 -f segment -segment_time 5 -reset_timestamps 1 -segment_format mp4 -strftime 1 out%Y-%m-%d_%H-%M-%S.mp4


and i got error :


Invalid segment filename template 'out%Y-%m-%d_%H-%M-%S.mp4'


I have read a lot of posts and questions in the internet with the same arguments (after input, which is specific) and people says that this works. What wrong with my command ?


UPD : add full ffmpeg log


root@nanopiair:~# ffmpeg -f v4l2 -framerate 30 -video_size 960x720 -i /dev/video0 -f segment -segment_time 5 -reset_timestamps 1 -segment_format mp4 -strftime 1 out%Y-%m-%d_%H-%M-%S.mp4
ffmpeg version git-2015-01-22-f86a076 Copyright (c) 2000-2014 the FFmpeg developers
 built on Jul 22 2020 12:02:39 with gcc 8 (Debian 8.3.0-6)
 configuration: --prefix=/usr --enable-nonfree --enable-gpl --enable-vdpau --enable-libx264 --enable-libv4l2 --enable-libfreetype --enable-libfontconfig --enable-libfribidi
 libavutil 54. 6.100 / 54. 6.100
 libavcodec 56. 0.101 / 56. 0.101
 libavformat 56. 2.100 / 56. 2.100
 libavdevice 56. 0.100 / 56. 0.100
 libavfilter 5. 0.102 / 5. 0.102
 libswscale 3. 0.100 / 3. 0.100
 libswresample 1. 1.100 / 1. 1.100
 libpostproc 53. 0.100 / 53. 0.100
Input #0, video4linux2,v4l2, from '/dev/video0':
 Duration: N/A, start: 2548.007454, bitrate: 248832 kb/s
 Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 960x720, 248832 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
[libx264 @ 0x201bec0] using cpu capabilities: ARMv6 NEON
[libx264 @ 0x201bec0] profile High, level 3.1
[libx264 @ 0x201bec0] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[mp4 @ 0x2507bd0] Invalid segment filename template 'out%Y-%m-%d_%H-%M-%S.mp4'
Output #0, segment, to 'out%Y-%m-%d_%H-%M-%S.mp4':
 Metadata:
 encoder : Lavf56.2.100
 Stream #0:0: Video: h264 (libx264), yuv420p, 960x720, q=-1--1, 30 fps, 30 tbn, 30 tbc
 Metadata:
 encoder : Lavc56.0.101 libx264
Stream mapping:
 Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument


Syndiquer tout le site
