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Autres articles (61)
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La file d’attente de SPIPmotion
28 novembre 2010, parUne file d’attente stockée dans la base de donnée
Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...) -
La sauvegarde automatique de canaux SPIP
1er avril 2010, parDans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...) -
Script d’installation automatique de MediaSPIP
25 avril 2011, parAfin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
La documentation de l’utilisation du script d’installation (...)
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Convert video with ffmpeg to have the same quality
14 mai 2019, par zlonI want to make some present for my grandma. And prepare some video. Unfortunately here video player is old and could not read some file formats. She is not at home now, so I don’t know which player she has. But I have a file which is OK for here system :
File which is in a correct format :
General
Complete name : let.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 688 MiB
Duration : 1 h 35 min
Overall bit rate : 1 002 kb/s
Writing application : VirtualDubMod 1.4.13
Writing library : VirtualDub build 14328/release
FileExtension_Invalid : avi
Video
ID : 0
Format : MPEG-4 Visual
Format profile : Simple@L3
Format settings, BVOP : No
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 1 h 35 min
Bit rate : 800 kb/s
Width : 544 pixels
Height : 416 pixels
Display aspect ratio : 4:3
Frame rate : 25.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.141
Stream size : 549 MiB (80%)
Writing library : XviD 0.0.09 (UTC 2003-03-25)I have the following file, which here system could not read :
File in the incorrect format :
General
Complete name : amf.avi
Format : AVI
Format/Info : Audio Video Interleave
Overall bit rate : 2 167 kb/s
Video
ID : 0
Format : MPEG-4 Visual
Format profile : Advanced Simple@L5
Format settings : BVOP1
Format settings, BVOP : 1
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (MPEG)
Codec ID : DX50
Codec ID/Hint : DivX 5
Bit rate : 1 710 kb/s
Width : 720 pixels
Height : 528 pixels
Display aspect ratio : 4:3
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.188
Stream size : 1.15 GiB (79%)
Writing library : XviD 64Could you help me to convert the second file to a format of the first ? (It would be nice if the output would be of the similar quality)
I have Ubuntu, and I think
ffmpegshould be able to do it.CROSS POSTED FROM : SE Video production.
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Why VLC not display RTP stream
5 janvier 2018, par Alexandr LukovnikovI am new in RTP. I whant to start RTSP server on embeded device. Now I can whatching video file, that stored in flash memory. But when I start translate video, that encoded whith x264, VLC not display anything.
Just buffering, nothing elsecore debug: `rtsp://172.16.50.194:1935/live1.sdp' successfully opened
core debug: Buffering 0%
packetizer_h264 debug: found NAL_SPS (sps_id=0)
core debug: Stream buffering done (11 ms in 133 ms)
core debug: Decoder wait done in 0 ms
packetizer_h264 debug: found NAL_PPS (pps_id=0 sps_id=0)
core error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay increased to 30 ms)
core error: ES_OUT_RESET_PCR called
core debug: Buffering 0%
core debug: Buffering 0%
core debug: Buffering 0%
core debug: Stream buffering done (111 ms in 706 ms)
core debug: Decoder wait done in 0 ms
core error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay increased to 594 ms)
core error: ES_OUT_RESET_PCR called
core debug: Buffering 0%
...
core debug: Buffering 0%
live555 warning: no data received in 10s, eof ?
core debug: EOF reachedThat is Wireshark dump
SPS slice
1111 0100 = Profile_idc: Unknown (244)
0... .... = Constraint_set0_flag: 0
.0.. .... = Constraint_set1_flag: 0
..0. .... = Constraint_set2_flag: 0
...0 .... = Constraint_set3_flag: 0
.... 0... = Constraint_set4_flag: 0
.... .0.. = Constraint_set5_flag: 0
.... ..00 = Reserved_zero_2bits: 0
0000 1101 = Level_id: 13 [Level 1.3 768 kb/s]
1... .... = seq_parameter_set_id: 0
.001 00.. = log2_max_frame_num_minus4: 3
.... ..01 1... .... = pic_order_cnt_type: 2
.001 01.. = num_ref_frames: 4
.... ..1. = gaps_in_frame_num_value_allowed_flag: 1
.... ...0 10.. .... = pic_width_in_mbs_minus1: 1
..00 0001 0100 0... = pic_height_in_map_units_minus1: 39
.... .0.. = frame_mbs_only_flag: 0
.... ..0. = mb_adaptive_frame_field_flag: 0
.... ...1 = direct_8x8_inference_flag: 1
1... .... = frame_cropping_flag: 1
.1.. .... = frame_crop_left_offset: 0
..1. .... = frame_crop_left_offset: 0
...1 .... = frame_crop_top_offset: 0
.... 1... = frame_crop_bottom_offset: 0
.... .0.. = vui_parameters_present_flag: 0
.... ..1. = rbsp_stop_bit: 1
.... ...0 = rbsp_trailing_bits: 0PPS slice
1... .... = pic_parameter_set_id: 0
.1.. .... = seq_parameter_set_id: 0
..0. .... = entropy_coding_mode_flag: 0
...0 .... = pic_order_present_flag: 0
.... 1... = num_slice_groups_minus1: 0
.... .1.. = num_ref_idx_l0_active_minus1: 0
.... ..1. = num_ref_idx_l1_active_minus1: 0
.... ...0 = weighted_pred_flag: 0
00.. .... = weighted_bipred_idc: 0
..00 0010 110. .... = pic_init_qp_minus26(se(v)): 11
...1 .... = pic_init_qs_minus26: 0
.... 1... = chroma_qp_index_offset: 0
.... .1.. = deblocking_filter_control_present_flag: 1
.... ..0. = constrained_intra_pred_flag: 0
.... ...0 = redundant_pic_cnt_present_flag: 0
1... .... = rbsp_stop_bit: 1
.000 0000 = rbsp_trailing_bits: 0And SEI
x264 - core 152 r2851 ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=10 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=1:1.00What could be my mistake ?
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FFMPEG : Youtube streaming issues
23 février 2019, par Alex ParamonovI am trying to make a reliable stream from my Icecast/Shoutcast servers to Youtube live.
The command that I use is :/usr/bin/ffmpeg -re -loop 1 -framerate 1 -i /var/users/youtube_stream/DJ-philadelphia_jO46wsH.jpg -i http://127.0.0.1:4700/radio -c:v libx264 -preset ultrafast -maxrate 2048k -bufsize 2048k -c:a copy -ab 128k -s 1920x1080 -rtmp_live live -f flv rtmp://a.rtmp.youtube.com/live2/k123 -nostatsThe stream starts running but suddenly stops at random times with the output similar to this :
av_interleaved_write_frame(): Broken pipe
[flv @ 0x5641e04db260] Failed to update header with correct duration.
[flv @ 0x5641e04db260] Failed to update header with correct filesize.
Error writing trailer of rtmp://a.rtmp.youtube.com/live2/123: Broken pipe
frame= 4771 fps=1.0 q=2.0 Lsize= 106465kB time=01:19:30.00 bitrate= 182.8kbits/s speed= 1x
video:29022kB audio:74516kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.825971%
Conversion failed!
99%
Exiting normally, received signal 15.I can’t say exactly why is this happening and maybe there is a way to fix it, but to mee it looks like ffmpeg can not send or convert some frame and it breaks the entire process, so I started digging the docs and found a
fifoformat that hasreconnectionoptions in case of failure.
So my new command is :/usr/bin/ffmpeg -re -loop 1 -framerate 1 -i /var/users/youtube_stream/DJ-philadelphia_jO46wsH.jpg -i http://127.0.0.1:4700/radio -c:v libx264 -preset ultrafast -maxrate 2048k -bufsize 2048k -c:a copy -ab 128k -s 1920x1080 -rtmp_live live -f fifo -fifo_format flv -map 0:v -map 1:a -drop_pkts_on_overflow 1 -attempt_recovery 1 -recovery_wait_time 1 rtmp://a.rtmp.youtube.com/live2/123 -nostatsWith this command Youtube starts complaining about video resolution saying that
65535x65535is not supported, value65535looks like something is not initialized properly. Please note that I have explicitly set the resolution with-s 1920x1080.The output from
FLVandFIFOformats looks quite similar.FLV
Input #0, image2, from '/var/users/youtube_stream/DJ-philadelphia_jO46wsH.jpg':
Duration: 00:00:01.00, start: 0.000000, bitrate: 597 kb/s
Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1920x1080 [SAR 1:1 DAR 16:9], 1 fps, 1 tbr, 1 tbn, 1 tbc
Input #1, mp3, from 'http://127.0.0.1:4700/radio':
Metadata:
icy-br : 128
icy-description : test
icy-genre : test
icy-name : Test
icy-pub : 1
StreamTitle : silence
Duration: N/A, start: 0.000000, bitrate: 128 kb/s
Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Stream #1:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
[libx264 @ 0x563bdde386a0] using SAR=1/1
[libx264 @ 0x563bdde386a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x563bdde386a0] profile Constrained Baseline, level 4.0
[libx264 @ 0x563bdde386a0] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=18 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=1 scenecut=0 intra_refresh=0 rc_lookahead=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=2048 vbv_bufsize=2048 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=0
Output #0, flv, to 'rtmp://a.rtmp.youtube.com/live2/k478-1xpz-v2de-5e79':
Metadata:
encoder : Lavf57.83.100
Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuvj420p(pc), 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 1 fps, 1k tbn, 1 tbc
Metadata:
encoder : Lavc57.107.100 libx264
Side data:
cpb: bitrate max/min/avg: 2048000/0/0 buffer size: 2048000 vbv_delay: -1
Stream #0:1: Audio: mp3 ([2][0][0][0] / 0x0002), 44100 Hz, stereo, s16p, 128 kb/sFIFO
Input #0, image2, from '/var/users/youtube_stream/DJ-philadelphia_jO46wsH.jpg':
Duration: 00:00:01.00, start: 0.000000, bitrate: 597 kb/s
Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1920x1080 [SAR 1:1 DAR 16:9], 1 fps, 1 tbr, 1 tbn, 1 tbc
Input #1, mp3, from 'http://127.0.0.1:4700/radio':
Metadata:
icy-br : 128
icy-description : test
icy-genre : test
icy-name : Test
icy-pub : 1
StreamTitle : silence
Duration: N/A, start: 0.000000, bitrate: 128 kb/s
Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Stream #1:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
[libx264 @ 0x560fb2209ae0] using SAR=1/1
[libx264 @ 0x560fb2209ae0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x560fb2209ae0] profile Constrained Baseline, level 4.0
Output #0, fifo, to 'rtmp://a.rtmp.youtube.com/live2/k478-1xpz-v2de-5e79':
Metadata:
encoder : Lavf57.83.100
Stream #0:0: Video: h264 (libx264), yuvj420p(pc), 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 1 fps, 1 tbn, 1 tbc
Metadata:
encoder : Lavc57.107.100 libx264
Side data:
cpb: bitrate max/min/avg: 2048000/0/0 buffer size: 2048000 vbv_delay: -1
Stream #0:1: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/syou can see the input streams, output, mapping - all fine except one line that is missing with
fifoformat :[libx264 @ 0x563bdde386a0] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html ...Seems like video codec is not completely initialized and does not start with when using
fifoformat.So my questions are :
- is there a way to create a reliable stream with
ffmpegw/o using
fifoformat ? - if
fifoformat is mandatory in this case, what’s wrong with my
video codec ?
- is there a way to create a reliable stream with
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