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Médias (91)

999,999

26 septembre 2011, par kent1

Mis à jour : Septembre 2011

Langue : English

Type : Audio

Tags : audio, Nine Inch Nails, Musique, mp3

1
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3
4
5
The Slip - Artworks

26 septembre 2011, par kent1

Mis à jour : Septembre 2011

Langue : English

Type : Texte

Tags : pdf, Nine Inch Nails, Musique, artwork

1
2
3
4
5
Demon seed (wav version)

26 septembre 2011, par kent1

Mis à jour : Avril 2013

Langue : English

Type : Audio

Tags : audio, Nine Inch Nails, Musique, wav

1
2
3
4
5
The four of us are dying (wav version)

26 septembre 2011, par kent1

Mis à jour : Avril 2013

Langue : English

Type : Audio

Tags : audio, Nine Inch Nails, Musique, wav

1
2
3
4
5
Corona radiata (wav version)

26 septembre 2011, par kent1

Mis à jour : Avril 2013

Langue : English

Type : Audio

Tags : audio, Nine Inch Nails, Musique, wav

1
2
3
4
5
Lights in the sky (wav version)

26 septembre 2011, par kent1

Mis à jour : Avril 2013

Langue : English

Type : Audio

Tags : audio, Nine Inch Nails, Musique, wav

1
2
3
4
5

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Autres articles (90)

MediaSPIP v0.2

21 juin 2013, par kent1

MediaSPIP 0.2 est la première version de MediaSPIP stable.
Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)
Publier sur MédiaSpip

13 juin 2013

Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Organiser par catégorie

17 mai 2013, par etalarma

Dans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
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1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ... | 30

Sur d’autres sites (5435)

How to encode H.264 video using FFmpeg C API and then open the output with a media player ?

4 avril 2016, par GummiB

I’m trying to encode a H.264 video with the FFMPEG C API.
I have successfully compiled and executed the decoding/encoding example provided by FFMPEG.

The problem I’m facing is that the .mpg file (encoded with AV_CODEC_ID_MPEG1VIDEO) the example creates works. Windows creates a thumbnail and everything. On the other hand the .h264 (encoded with AV_CODEC_ID_H264) file does not. When I try to play the file in VLC the play/pause button just flickers, no thumbnail in windows, no nothing.

During encoding libx264 reports the following :

[libx264 @ 004b81a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX

[libx264 @ 004b81a0] profile High, level 1.3

[libx264 @ 004b81a0] frame I:3     Avg QP:26.79  size:  2116

[libx264 @ 004b81a0] frame P:12    Avg QP:26.60  size:   789

[libx264 @ 004b81a0] frame B:10    Avg QP:31.39  size:   499

[libx264 @ 004b81a0] consecutive B-frames: 20.0% 80.0%

[libx264 @ 004b81a0] mb I  I16..4: 78.3% 11.6% 10.1%

[libx264 @ 004b81a0] mb P  I16..4: 77.4%  0.6%  0.1%  P16..4: 20.3%  0.7%  0.9%  0.0%  0.0%    skip: 0.0%

[libx264 @ 004b81a0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  9.4%  0.2%  0.0%  direct:11.0%  skip:79.4%  L0:25.4% L1:35.4% BI:39.2%

[libx264 @ 004b81a0] final ratefactor: 17.03

[libx264 @ 004b81a0] 8x8 transform intra:3.4% inter:31.3%

[libx264 @ 004b81a0] direct mvs  spatial:0.0% temporal:100.0%

[libx264 @ 004b81a0] coded y,uvDC,uvAC intra: 4.4% 35.8% 1.6% inter: 1.3% 34.5% 9.5%

[libx264 @ 004b81a0] i16 v,h,dc,p:  0%  0%  0% 100%

[libx264 @ 004b81a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  7% 20% 17% 49%  0%  0%  0%  1%  6%

[libx264 @ 004b81a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14%  7% 18% 45%  2%  7%  2%  3%  2%

[libx264 @ 004b81a0] i8c dc,h,v,p:  2%  6%  4% 88%

[libx264 @ 004b81a0] Weighted P-Frames: Y:0.0% UV:0.0%

[libx264 @ 004b81a0] ref P L0: 95.6%  1.6%  2.2%  0.5%  0.2%

[libx264 @ 004b81a0] ref B L0: 67.5% 28.5%  3.2%  0.8%

[libx264 @ 004b81a0] kb/s:166.45

"ffprobe.exe test.h264 -show_streams" returns

[STREAM]

index=0

codec_name=h264

codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10

profile=High

codec_type=video

codec_time_base=1/50

codec_tag_string=[0][0][0][0]

codec_tag=0x0000

width=352

height=288

has_b_frames=1

sample_aspect_ratio=0:1

display_aspect_ratio=0:1

pix_fmt=yuv420p

level=13

timecode=N/A

id=N/A

r_frame_rate=50/2

avg_frame_rate=25/1

time_base=1/1200000

start_pts=N/A

start_time=N/A

duration_ts=N/A

duration=N/A

bit_rate=N/A

nb_frames=N/A

nb_read_frames=N/A

nb_read_packets=N/A

DISPOSITION:default=0

DISPOSITION:dub=0

DISPOSITION:original=0

DISPOSITION:comment=0

DISPOSITION:lyrics=0

DISPOSITION:karaoke=0

DISPOSITION:forced=0

DISPOSITION:hearing_impaired=0

DISPOSITION:visual_impaired=0

DISPOSITION:clean_effects=0

DISPOSITION:attached_pic=0

[/STREAM]

There you can see :

start_time=N/A

duration_ts=N/A

duration=N/A

I have tried countless changes to the AVCodecContext and multitude of parameters options to av_opt_set function. Still no luck getting a working H.264 video. I have even tried different builds of FFmpeg. No luck.

I’m using the "FFmpeg git-0fb64da 32-bit Dev" build from Zeranoe and MinGw 4.7.2

Is there a media server which just receives any rtsp streams and serves them ?

7 mai 2015, par Given92

I have some rtmp streams served over nginx-rtmp-module and the number of them will be changed dynamically.

But for the limit of client, I have to serve them in rtsp protocol. Obviously, It’s not supported by nginx-rtmp-module. So I plan to run a rtsp server in the same device, and convert the rtmp stream into rtsp stream with ffmpeg, then send the rtsp stream to the rtsp server. So that client could play the stream from the rtsp server.

The trouble is that I could not found a stable server which just receive any rtsp streams and serve them.

There is an example that fits all my need but it’s a little unstable.

I run it in verbose mode and send stream with :

ffmpeg -i rtmp://localhost/<name> -codec copy -ar 44100 -ac 1 -f rtsp rtsp://localhost:5545/<name>

</name></name>

and play the stream with :

gst-launch-0.10 playbin2 uri=rtsp://<server>/<name>

</name></server>

The video does not appear and there are some repeated warnning like this :

WARNING: from element /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstRtpVorbisDepay:rtpvorbisdepay0: Could not decode stream.

Additional debug info:

gstrtpvorbisdepay.c(633): gst_rtp_vorbis_depay_process (): /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstRtpVorbisDepay:rtpvorbisdepay0:

When I try :

gst-launch-1.0 playbin uri=rtsp://<server>/<name>

</name></server>

it is stuck and no video appear :

Setting pipeline to PAUSED ...

Pipeline is live and does not need PREROLL ...

Progress: (open) Opening Stream

Progress: (connect) Connecting to rtsp://211.68.127.12/box

Progress: (open) Retrieving server options

Progress: (open) Retrieving media info

Progress: (request) SETUP stream 0

Progress: (request) SETUP stream 1

Progress: (open) Opened Stream

Setting pipeline to PLAYING ...

New clock: GstSystemClock

Progress: (request) Sending PLAY request

Progress: (request) Sending PLAY request

Progress: (request) Sent PLAY request

When I play with :

ffplay rtsp://<server>/<name>

</name></server>

The video appears but the quality depress me.

Here is the output :

```ffplay version 2.6.2 Copyright (c) 2003-2015 the FFmpeg developers

  built with gcc 4.9.2 (GCC) 20150304 (prerelease)

  configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-avresample --enable-fontconfig --enable-gnutls --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-runtime-cpudetect --enable-shared --enable-swresample --enable-vdpau --enable-version3 --enable-x11grab

  libavutil      54. 20.100 / 54. 20.100

  libavcodec     56. 26.100 / 56. 26.100

  libavformat    56. 25.101 / 56. 25.101

  libavdevice    56.  4.100 / 56.  4.100

  libavfilter     5. 11.102 /  5. 11.102

  libavresample   2.  1.  0 /  2.  1.  0

  libswscale      3.  1.101 /  3.  1.101

  libswresample   1.  1.100 /  1.  1.100

  libpostproc    53.  3.100 / 53.  3.100

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 2 times

[h264 @ 0x7f97f4000cc0] ref 7 overflow

[h264 @ 0x7f97f4000cc0] error while decoding MB 19 23

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 615 DC, 615 AC, 615 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 370 DC, 370 AC, 370 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] ref 4 overflow

[h264 @ 0x7f97f4000cc0] error while decoding MB 37 23

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 597 DC, 597 AC, 597 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 3 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets  0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 473 DC, 473 AC, 473 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 564 DC, 564 AC, 564 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 605 DC, 605 AC, 605 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets  0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 17 packets0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] ref 4 overflow

[h264 @ 0x7f97f4000cc0] error while decoding MB 27 20

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 742 DC, 742 AC, 742 MV errors in P frame

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 23 packets0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] out of range intra chroma pred mode at 9 4

[h264 @ 0x7f97f4000cc0] error while decoding MB 9 4

[h264 @ 0x7f97f4000cc0] concealing 1480 DC, 1480 AC, 1480 MV errors in I frame

[h264 @ 0x7f97f4000cc0] RTP: missed 7 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 278 DC, 278 AC, 278 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

    Last message repeated 2 times

[mp3 @ 0x7f97f4009280] RTP: missed 2 packets  0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 1 times

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 5 packets

Input #0, rtsp, from 'rtsp://211.68.127.12/box':B sq=    0B f=0/0   

  Metadata:

    title           : 

  Duration: N/A, start: 0.000033, bitrate: N/A

    Stream #0:0: Video: h264 (Baseline), yuv420p(tv), 720x576 [SAR 1:1 DAR 5:4], 24 fps, 24 tbr, 90k tbn, 48 tbc

    Stream #0:1: Audio: mp3, 44100 Hz, mono, s16p, 56 kb/s

[h264 @ 0x7f97f4263d40] ref 7 overflow vq=  226KB sq=    0B f=0/0   

[h264 @ 0x7f97f4263d40] error while decoding MB 19 23

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 615 DC, 615 AC, 615 MV errors in P frame

[h264 @ 0x7f97f4264580] Cannot use next picture in error concealment

[h264 @ 0x7f97f4264580] concealing 370 DC, 370 AC, 370 MV errors in P frame

[h264 @ 0x7f97f41699a0] ref 4 overflow

[h264 @ 0x7f97f41699a0] error while decoding MB 37 23

[h264 @ 0x7f97f41699a0] Cannot use next picture in error concealment

[h264 @ 0x7f97f41699a0] concealing 597 DC, 597 AC, 597 MV errors in P frame

[h264 @ 0x7f97f4264580] Cannot use next picture in error concealment

[h264 @ 0x7f97f4264580] concealing 473 DC, 473 AC, 473 MV errors in P frame

[h264 @ 0x7f97f4264580] Cannot use next picture in error concealment

[h264 @ 0x7f97f4264580] concealing 564 DC, 564 AC, 564 MV errors in P frame

[h264 @ 0x7f97f41699a0] Cannot use next picture in error concealment

[h264 @ 0x7f97f41699a0] concealing 605 DC, 605 AC, 605 MV errors in P frame

[h264 @ 0x7f97f4264580] out of range intra chroma pred mode at 9 4  

[h264 @ 0x7f97f4264580] error while decoding MB 9 4

[h264 @ 0x7f97f4264580] concealing 1480 DC, 1480 AC, 1480 MV errors in I frame

[h264 @ 0x7f97f416a200] ref 4 overflow

[h264 @ 0x7f97f416a200] error while decoding MB 27 20

[h264 @ 0x7f97f416a200] Cannot use next picture in error concealment

[h264 @ 0x7f97f416a200] concealing 742 DC, 742 AC, 742 MV errors in P frame

[h264 @ 0x7f97f416a200] Cannot use next picture in error concealment

[h264 @ 0x7f97f416a200] concealing 278 DC, 278 AC, 278 MV errors in P frame

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets53KB sq=    0B f=0/0   

    Last message repeated 1 times

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets 60KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 10 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 2 times

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -4 -4

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -1 -1

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -1 -1

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 3 times

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -5 -5

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -4 -4

    Last message repeated 1 times

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -7 -7

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -5 -5

[mp3 @ 0x7f97f4009280] overread, skip -10 enddists: -6 -6

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 2 times

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -7 -7

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -6 -6

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -3 -3

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f416a200] Cannot use next picture in error concealment

[h264 @ 0x7f97f42630e0] Cannot use next picture in error concealment

[h264 @ 0x7f97f416a200] concealing 327 DC, 327 AC, 327 MV errors in P frame

[h264 @ 0x7f97f42630e0] concealing 327 DC, 327 AC, 327 MV errors in P frame

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 325 DC, 325 AC, 325 MV errors in P frame

[h264 @ 0x7f97f41699a0] Cannot use next picture in error concealment

[h264 @ 0x7f97f41699a0] concealing 371 DC, 371 AC, 371 MV errors in P frame

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -4 -4 0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -2 -2

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -7 -7 0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -2 -2

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets08KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets05KB sq=    0B f=0/0   

[h264 @ 0x7f97f4263d40] ref 3 overflow vq=  207KB sq=    0B f=0/0   

[h264 @ 0x7f97f4263d40] error while decoding MB 20 34

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 119 DC, 119 AC, 119 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 1 times

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -2 -2 0B f=0/0   

[h264 @ 0x7f97f4263d40] out of range intra chroma pred mode at 37 23

[h264 @ 0x7f97f4263d40] error while decoding MB 37 23

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 597 DC, 597 AC, 597 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -2 -2 0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -3 -3

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -4 -4

[h264 @ 0x7f97f4000cc0] RTP: missed 16 packets

[h264 @ 0x7f97f41699a0] Cannot use next picture in error concealment

[h264 @ 0x7f97f41699a0] concealing 435 DC, 435 AC, 435 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 1 times

[mp3 @ 0x7f97f4009280] RTP: missed 2 packets211KB sq=    0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -2 -2

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -2 -2

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -6 -6

[h264 @ 0x7f97f42630e0] Cannot use next picture in error concealment

[h264 @ 0x7f97f42630e0] concealing 519 DC, 519 AC, 519 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 1 times

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets158KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 8 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets58KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets55KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets55KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets56KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets66KB sq=    0B f=0/0   

[h264 @ 0x7f97f416a200] ref 11 overflowvq=  158KB sq=    0B f=0/0   

[h264 @ 0x7f97f416a200] error while decoding MB 13 29

[h264 @ 0x7f97f416a200] Cannot use next picture in error concealment

[h264 @ 0x7f97f416a200] concealing 351 DC, 351 AC, 351 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets54KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets61KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 6 packets57KB sq=    0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -2 -2 0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -8 enddists: -5 -5

[h264 @ 0x7f97f416a200] out of range intra chroma pred mode at 34 8 

[h264 @ 0x7f97f416a200] error while decoding MB 34 8

[h264 @ 0x7f97f416a200] concealing 1275 DC, 1275 AC, 1275 MV errors in I frame

[h264 @ 0x7f97f4264580] Cannot use next picture in error concealment

[h264 @ 0x7f97f4264580] concealing 327 DC, 327 AC, 327 MV errors in P frame

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets152KB sq=    0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -5 -5 0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -5 -5 0B f=0/0   

[h264 @ 0x7f97f42630e0] P sub_mb_type 12 out of range at 9 26=0/0   

[h264 @ 0x7f97f42630e0] error while decoding MB 9 26

[h264 @ 0x7f97f42630e0] Cannot use next picture in error concealment

[h264 @ 0x7f97f42630e0] concealing 490 DC, 490 AC, 490 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 3 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 10 packets3KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets29KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets16KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets21KB sq=    0B f=0/0   

[h264 @ 0x7f97f42630e0] Cannot use next picture in error concealment

[h264 @ 0x7f97f42630e0] concealing 513 DC, 513 AC, 513 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets19KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets27KB sq=    0B f=0/0   

    Last message repeated 1 times

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets32KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 3 packets

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets135KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -2 -2

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -4 -4 0B f=0/0   

[h264 @ 0x7f97f4264580] Cannot use next picture in error concealment

[h264 @ 0x7f97f4264580] concealing 230 DC, 230 AC, 230 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 4 packets21KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 3 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets05KB sq=    0B f=0/0   

    Last message repeated 3 times

[h264 @ 0x7f97f4000cc0] RTP: missed 7 packets16KB sq=    0B f=0/0   

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets

[h264 @ 0x7f97f4263d40] ref 13 overflowvq=  110KB sq=    0B f=0/0   

[h264 @ 0x7f97f4263d40] error while decoding MB 12 33

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 172 DC, 172 AC, 172 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets12KB sq=    0B f=0/0   

    Last message repeated 2 times

[h264 @ 0x7f97f416a200] Cannot use next picture in error concealment

[h264 @ 0x7f97f416a200] concealing 414 DC, 414 AC, 414 MV errors in P frame

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets116KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 1 times

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets12KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 6 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets126KB sq=    0B f=0/0   

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 327 DC, 327 AC, 327 MV errors in P frame

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -1 -1 0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -4 -4

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -6 -6

^C[h264 @ 0x7f97f4263d40] ref 7 overflowq=  107KB sq=    0B f=0/0   

[h264 @ 0x7f97f4263d40] error while decoding MB 8 24

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 581 DC, 581 AC, 581 MV errors in P frame

I’m not sure whether ffmpeg or rtsp-server is the problem, does anyone have some ideas ?

Thanks very much.

Play video using mse (media source extension) in google chrome

23 août 2019, par liyuqihxc

I’m working on a project that convert rtsp stream (ffmpeg) and play it on the web page (signalr + mse).

So far it works pretty much as I expected on the latest version of edge and firefox, but not chrome.

here’s the code

public class WebmMediaStreamContext

{

    private Process _ffProcess;

    private readonly string _cmd;

    private byte[] _initSegment;

    private Task _readMediaStreamTask;

    private CancellationTokenSource _cancellationTokenSource;



    private const string _CmdTemplate = "-i {0} -c:v libvpx -tile-columns 4 -frame-parallel 1 -keyint_min 90 -g 90 -f webm -dash 1 pipe:";



    public static readonly byte[] ClusterStart = { 0x1F, 0x43, 0xB6, 0x75, 0x01, 0x00, 0x00, 0x00 };



    public event EventHandler<clusterreadyeventargs> ClusterReadyEvent;



    public WebmMediaStreamContext(string rtspFeed)

    {

        _cmd = string.Format(_CmdTemplate, rtspFeed);

    }



    public async Task StartConverting()

    {

        if (_ffProcess != null)

            throw new InvalidOperationException();



        _ffProcess = new Process();

        _ffProcess.StartInfo = new ProcessStartInfo

        {

            FileName = "ffmpeg/ffmpeg.exe",

            Arguments = _cmd,

            UseShellExecute = false,

            CreateNoWindow = true,

            RedirectStandardOutput = true

        };

        _ffProcess.Start();



        _initSegment = await ParseInitSegmentAndStartReadMediaStream();

    }



    public byte[] GetInitSegment()

    {

        return _initSegment;

    }



    // Find the first cluster， and everything before it is the InitSegment

    private async Task ParseInitSegmentAndStartReadMediaStream()

    {

        Memory<byte> buffer = new byte[10 * 1024];

        int length = 0;

        while (length != buffer.Length)

        {

            length += await _ffProcess.StandardOutput.BaseStream.ReadAsync(buffer.Slice(length));

            int cluster = buffer.Span.IndexOf(ClusterStart);

            if (cluster >= 0)

            {

                _cancellationTokenSource = new CancellationTokenSource();

                _readMediaStreamTask = new Task(() => ReadMediaStreamProc(buffer.Slice(cluster, length - cluster).ToArray(), _cancellationTokenSource.Token), _cancellationTokenSource.Token, TaskCreationOptions.LongRunning);

                _readMediaStreamTask.Start();

                return buffer.Slice(0, cluster).ToArray();

            }

        }



        throw new InvalidOperationException();

    }



    private void ReadMoreBytes(Span<byte> buffer)

    {

        int size = buffer.Length;

        while (size > 0)

        {

            int len = _ffProcess.StandardOutput.BaseStream.Read(buffer.Slice(buffer.Length - size));

            size -= len;

        }

    }



    // Parse every single cluster and fire ClusterReadyEvent

    private void ReadMediaStreamProc(byte[] bytesRead, CancellationToken cancel)

    {

        Span<byte> buffer = new byte[5 * 1024 * 1024];

        bytesRead.CopyTo(buffer);

        int bufferEmptyIndex = bytesRead.Length;



        do

        {

            if (bufferEmptyIndex &lt; ClusterStart.Length + 4)

            {

                ReadMoreBytes(buffer.Slice(bufferEmptyIndex, 1024));

                bufferEmptyIndex += 1024;

            }



            int clusterDataSize = BitConverter.ToInt32(

                buffer.Slice(ClusterStart.Length, 4)

                .ToArray()

                .Reverse()

                .ToArray()

            );

            int clusterSize = ClusterStart.Length + 4 + clusterDataSize;

            if (clusterSize > buffer.Length)

            {

                byte[] newBuffer = new byte[clusterSize];

                buffer.Slice(0, bufferEmptyIndex).CopyTo(newBuffer);

                buffer = newBuffer;

            }



            if (bufferEmptyIndex &lt; clusterSize)

            {

                ReadMoreBytes(buffer.Slice(bufferEmptyIndex, clusterSize - bufferEmptyIndex));

                bufferEmptyIndex = clusterSize;

            }



            ClusterReadyEvent?.Invoke(this, new ClusterReadyEventArgs(buffer.Slice(0, bufferEmptyIndex).ToArray()));



            bufferEmptyIndex = 0;

        } while (!cancel.IsCancellationRequested);

    }

}

</byte></byte></byte></clusterreadyeventargs>

I use ffmpeg to convert the rtsp stream to vp8 WEBM byte stream and parse it to "Init Segment" (ebml head、info、tracks...) and "Media Segment" (cluster)， then send it to browser via signalR

$(function () {



    var mediaSource = new MediaSource();

    var mimeCodec = 'video/webm; codecs="vp8"';



    var video = document.getElementById('video');



    mediaSource.addEventListener('sourceopen', callback, false);

    function callback(e) {

        var sourceBuffer = mediaSource.addSourceBuffer(mimeCodec);

        var queue = [];



        sourceBuffer.addEventListener('updateend', function () {

            if (queue.length === 0) {

                return;

            }



            var base64 = queue[0];

            if (base64.length === 0) {

                mediaSource.endOfStream();

                queue.shift();

                return;

            } else {

                var buffer = new Uint8Array(atob(base64).split("").map(function (c) {

                    return c.charCodeAt(0);

                }));

                sourceBuffer.appendBuffer(buffer);

                queue.shift();

            }

        }, false);



        var connection = new signalR.HubConnectionBuilder()

            .withUrl("/signalr-video")

            .configureLogging(signalR.LogLevel.Information)

            .build();

        connection.start().then(function () {

            connection.stream("InitVideoReceive")

                .subscribe({

                    next: function(item) {

                        if (queue.length === 0 &amp;&amp; !!!sourceBuffer.updating) {

                            var buffer = new Uint8Array(atob(item).split("").map(function (c) {

                                return c.charCodeAt(0);

                            }));

                            sourceBuffer.appendBuffer(buffer);

                            console.log(blockindex++ + " : " + buffer.byteLength);

                        } else {

                            queue.push(item);

                        }

                    },

                    complete: function () {

                        queue.push('');

                    },

                    error: function (err) {

                        console.error(err);

                    }

                });

        });

    }

    video.src = window.URL.createObjectURL(mediaSource);

})

chrome just play the video for 3 5 seconds and then stop for buffering, even though there are plenty of cluster transfered and inserted into SourceBuffer.

here’s the information in chrome ://media-internals/

Player Properties :

render_id: 217

player_id: 1

origin_url: http://localhost:52531/

frame_url: http://localhost:52531/

frame_title: Home Page

url: blob:http://localhost:52531/dcb25d89-9830-40a5-ba88-33c13b5c03eb

info: Selected FFmpegVideoDecoder for video decoding, config: codec: vp8 format: 1 profile: vp8 coded size: [1280,720] visible rect: [0,0,1280,720] natural size: [1280,720] has extra data? false encryption scheme: Unencrypted rotation: 0°

pipeline_state: kSuspended

found_video_stream: true

video_codec_name: vp8

video_dds: false

video_decoder: FFmpegVideoDecoder

duration: unknown

height: 720

width: 1280

video_buffering_state: BUFFERING_HAVE_NOTHING

for_suspended_start: false

pipeline_buffering_state: BUFFERING_HAVE_NOTHING

event: PAUSE

Log

Timestamp       Property            Value

00:00:00 00     origin_url          http://localhost:52531/

00:00:00 00     frame_url           http://localhost:52531/

00:00:00 00     frame_title         Home Page

00:00:00 00     url                 blob:http://localhost:52531/dcb25d89-9830-40a5-ba88-33c13b5c03eb

00:00:00 00     info                ChunkDemuxer: buffering by DTS

00:00:00 35     pipeline_state      kStarting

00:00:15 213    found_video_stream  true

00:00:15 213    video_codec_name    vp8

00:00:15 216    video_dds           false

00:00:15 216    video_decoder       FFmpegVideoDecoder

00:00:15 216    info                Selected FFmpegVideoDecoder for video decoding, config: codec: vp8 format: 1 profile: vp8 coded size: [1280,720] visible rect: [0,0,1280,720] natural size: [1280,720] has extra data? false encryption scheme: Unencrypted rotation: 0°

00:00:15 216    pipeline_state      kPlaying

00:00:15 213    duration            unknown

00:00:16 661    height              720

00:00:16 661    width               1280

00:00:16 665    video_buffering_state       BUFFERING_HAVE_ENOUGH

00:00:16 665    for_suspended_start         false

00:00:16 665    pipeline_buffering_state    BUFFERING_HAVE_ENOUGH

00:00:16 667    pipeline_state      kSuspending

00:00:16 670    pipeline_state      kSuspended

00:00:52 759    info                Effective playback rate changed from 0 to 1

00:00:52 759    event               PLAY

00:00:52 759    pipeline_state      kResuming

00:00:52 760    video_dds           false

00:00:52 760    video_decoder       FFmpegVideoDecoder

00:00:52 760    info                Selected FFmpegVideoDecoder for video decoding, config: codec: vp8 format: 1 profile: vp8 coded size: [1280,720] visible rect: [0,0,1280,720] natural size: [1280,720] has extra data? false encryption scheme: Unencrypted rotation: 0°

00:00:52 760    pipeline_state      kPlaying

00:00:52 793    height              720

00:00:52 793    width               1280

00:00:52 798    video_buffering_state       BUFFERING_HAVE_ENOUGH

00:00:52 798    for_suspended_start         false

00:00:52 798    pipeline_buffering_state    BUFFERING_HAVE_ENOUGH

00:00:56 278    video_buffering_state       BUFFERING_HAVE_NOTHING

00:00:56 295    for_suspended_start         false

00:00:56 295    pipeline_buffering_state    BUFFERING_HAVE_NOTHING

00:01:20 717    event               PAUSE

00:01:33 538    event               PLAY

00:01:35 94     event               PAUSE

00:01:55 561    pipeline_state      kSuspending

00:01:55 563    pipeline_state      kSuspended

Can someone tell me what’s wrong with my code, or dose chrome require some magic configuration to work ?

Thanks

Please excuse my english :)

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