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Médias (91)

Richard Stallman et le logiciel libre

19 octobre 2011, par kent1

Mis à jour : Mai 2013

Langue : français

Type : Texte

Tags : opensource, stallman, biographie, livre, framasoft

1
2
3
4
5
Stereo master soundtrack

17 octobre 2011, par kent1

Mis à jour : Octobre 2011

Langue : English

Type : Audio

Tags : creative commons, audio, Elephant dreams, soundtrack, flac

1
2
3
4
5
Elephants Dream - Cover of the soundtrack

17 octobre 2011, par kent1

Mis à jour : Octobre 2011

Langue : English

Type : Image

Tags : image, Elephant dreams, soundtrack

1
2
3
4
5
#7 Ambience

16 octobre 2011, par kent1

Mis à jour : Juin 2015

Langue : English

Type : Audio

Tags : creative commons, Musique, mp3, Elephant dreams, soundtrack

1
2
3
4
5
#6 Teaser Music

16 octobre 2011, par kent1

Mis à jour : Février 2013

Langue : English

Type : Audio

Tags : creative commons, Musique, mp3, Elephant dreams, soundtrack

1
2
3
4
5
#5 End Title

16 octobre 2011, par kent1

Mis à jour : Février 2013

Langue : English

Type : Audio

Tags : creative commons, Musique, mp3, Elephant dreams, soundtrack

1
2
3
4
5

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ... | 16

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FFmpeg retrieve a specific program from TS file

8 mai 2017, par chang jc

I tried to retrieve a specific program from a TS file.
Said :

Input #0, mpegts, from 'DVB_T_good.ts':

  Duration: 00:00:48.04, start: 55045.888000, bitrate: 14521 kb/s

  Program 300 

    Metadata:

      service_name    : ?l?��}�TS�

      service_provider: ?l?��

    Stream #0:0[0xbb9]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc

    Stream #0:1[0xbba]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s

    Stream #0:2[0xbbb]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s

  Program 301 

    Metadata:

      service_name    : ?l?��N��?S�

      service_provider: ?l?��

    Stream #0:3[0xbc3]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc

    Stream #0:9[0xbc4]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s

    Stream #0:10[0xbc5]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s

  Program 302 

    Metadata:

      service_name    : ?l?��e��^S�

      service_provider: ?l?��

    Stream #0:5[0xbcd]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc

    Stream #0:6[0xbce]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s

  Program 304 

    Metadata:

      service_name    : ?l?��S�pcS�

      service_provider: ?l?��

    Stream #0:4[0xbe1]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc

    Stream #0:7[0xbe2]: Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp

    Stream #0:8[0xbe3]: Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp

Then I tried to retrieve a specific program as :

ffmpeg -i INPUT -map 0:p:1344 OUTPUT

It succeeds greatly but the only thing I noticed is :

it seems to apply transcode (decode & encode again) to the output implicitely ?

ffmpeg version N-85693-g8de3458 Copyright (c) 2000-2017 the FFmpeg developers

  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609

  configuration: --prefix=/home/john/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/john/ffmpeg_build/include --extra-ldflags=-L/home/john/ffmpeg_build/lib --bindir=/home/john/bin --enable-gpl --enable-libfreetype --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --disable-ffplay --disable-ffserver --disable-doc --disable-libopus

  libavutil      55. 61.100 / 55. 61.100

  libavcodec     57. 93.100 / 57. 93.100

  libavformat    57. 72.101 / 57. 72.101

  libavdevice    57.  7.100 / 57.  7.100

  libavfilter     6. 87.100 /  6. 87.100

  libswscale      4.  7.101 /  4.  7.101

  libswresample   2.  8.100 /  2.  8.100

  libpostproc    54.  6.100 / 54.  6.100

[NULL @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[NULL @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.

    Last message repeated 1 times

[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.

    Last message repeated 1 times

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.

    Last message repeated 1 times

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.

    Last message repeated 1 times

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.

    Last message repeated 1 times

[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.

    Last message repeated 1 times

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing

[h264 @ 0x33eb3a0] non-existing PPS 0 referenced

[h264 @ 0x33eb3a0] decode_slice_header error

[h264 @ 0x33eb3a0] no frame!

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

    Last message repeated 1 times

[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.

    Last message repeated 2 times

[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.

[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.

[mpegts @ 0x33af360] PES packet size mismatch

    Last message repeated 9 times

Input #0, mpegts, from 'DVB_T_good.ts':

  Duration: 00:00:48.04, start: 55045.888000, bitrate: 14521 kb/s

  Program 300 

    Metadata:

      service_name    : ?l?��}�TS�

      service_provider: ?l?��

    Stream #0:0[0xbb9]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc

    Stream #0:1[0xbba]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s

    Stream #0:2[0xbbb]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s

  Program 301 

    Metadata:

      service_name    : ?l?��N��?S�

      service_provider: ?l?��

    Stream #0:3[0xbc3]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc

    Stream #0:9[0xbc4]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s

    Stream #0:10[0xbc5]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s

  Program 302 

    Metadata:

      service_name    : ?l?��e��^S�

      service_provider: ?l?��

    Stream #0:5[0xbcd]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc

    Stream #0:6[0xbce]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s

  Program 304 

    Metadata:

      service_name    : ?l?��S�pcS�

      service_provider: ?l?��

    Stream #0:4[0xbe1]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc

    Stream #0:7[0xbe2]: Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp

    Stream #0:8[0xbe3]: Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp

map 0:p:304

File '304_1800.ts' already exists. Overwrite ? [y/N] y

Stream mapping:

  Stream #0:4 -> #0:0 (h264 (native) -> mpeg2video (native))

  Stream #0:7 -> #0:1 (aac_latm (native) -> mp2 (native))

  Stream #0:8 -> #0:2 (aac_latm (native) -> mp2 (native))

Press [q] to stop, [?] for help

[h264 @ 0x33d6d20] mmco: unref short failure

    Last message repeated 1 times

[h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one

[h264 @ 0x33d6d20] reference picture missing during reorder

[h264 @ 0x33d6d20] Missing reference picture, default is 65784

[h264 @ 0x33d6d20] reference picture missing during reorder

[h264 @ 0x33d6d20] Missing reference picture, default is 65785

Output #0, mpegts, to '304_1800.ts':

  Metadata:

    encoder         : Lavf57.72.101

    Stream #0:0: Video: mpeg2video (Main), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 90k tbn, 29.97 tbc

    Metadata:

      encoder         : Lavc57.93.100 mpeg2video

    Side data:

      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1

    Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s

    Metadata:

      encoder         : Lavc57.93.100 mp2

    Stream #0:2: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s

    Metadata:

      encoder         : Lavc57.93.100 mp2

[h264 @ 0x33d6d20] mmco: unref short failureime=00:00:44.34 bitrate=3506.2kbits/s speed=1.43x    

    Last message repeated 1 times

[h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one

[mpegts @ 0x33af360] PES packet size mismatch

[aac_latm @ 0x3587360] Number of bands (59) exceeds limit (45).

Error while decoding stream #0:7: Invalid data found when processing input

    Last message repeated 1 times

[h264 @ 0x33d6d20] mmco: unref short failure

    Last message repeated 1 times

[h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one

[h264 @ 0x33d6d20] mmco: unref short failureime=00:00:45.05 bitrate=3491.2kbits/s speed=1.43x    

    Last message repeated 1 times

[h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one

[h264 @ 0x33d6d20] mmco: unref short failure

    Last message repeated 1 times

[h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one

[mpegts @ 0x33af360] PES packet size mismatchme=00:00:47.74 bitrate=3470.1kbits/s speed=1.43x    

    Last message repeated 1 times

[h264 @ 0x33d6d20] error while decoding MB 97 35, bytestream -12

Error while decoding stream #0:7: Invalid data found when processing input

Error while decoding stream #0:8: Invalid data found when processing input

frame= 1404 fps= 42 q=31.0 Lsize=   20396kB time=00:00:47.88 bitrate=3489.5kbits/s speed=1.42x    

video:14144kB audio:4429kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 9.813825%

You could notice by following message :

Output #0, mpegts, to '304_1800.ts':

  Metadata:

    encoder         : Lavf57.72.101

    Stream #0:0: Video: mpeg2video (Main), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 90k tbn, 29.97 tbc

    Metadata:

      encoder         : Lavc57.93.100 mpeg2video

    Side data:

      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1

    Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s

    Metadata:

      encoder         : Lavc57.93.100 mp2

    Stream #0:2: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s

    Metadata:

      encoder         : Lavc57.93.100 mp2

If so, could I avoid the transcoding by command ? Or it is a necessary ?
It it is a need, WHY ?

Merge commit 'bd6496fa07e32fd09ceb79404f9af43df959bcb2'

5 mai 2017, par Clément Bœsch

Merge commit 'bd6496fa07e32fd09ceb79404f9af43df959bcb2'

* commit 'bd6496fa07e32fd09ceb79404f9af43df959bcb2' :
interplayvideo : Convert to the new bitstream reader
adx : Convert to the new bitstream reader
dvbsubdec : Convert to the new bitstream reader
motionpixels : Convert to the new bitstream reader

This merge is a noop, see
http://ffmpeg.org/pipermail/ffmpeg-devel/2017-April/209609.html

Merged-by : Clément Bœsch <u@pkh.me>

tcp : set socket buffer sizes before listen/connect/accept

9 janvier 2017, par Joel Cunningham

tcp : set socket buffer sizes before listen/connect/accept
From e24d95c0e06a878d401ee34fd6742fcaddeeb95f Mon Sep 17 00:00:00 2001

From : Joel Cunningham <joel.cunningham@me.com>

Date : Mon, 9 Jan 2017 13:37:51 -0600

Subject : [PATCH] tcp : set socket buffer sizes before listen/connect/accept
Attempting to set SO_RCVBUF and SO_SNDBUF on TCP sockets after connection

establishment is incorrect and some stacks ignore the set call on the socket at

this point.  This has been observed on MacOS/iOS.  Windows 7 has some peculiar

behavior where setting SO_RCVBUF after applies only if the buffer is increasing

from the default while decreases are ignored.  This is possibly how the incorrect

usage has gone unnoticed
Unix Network Programming Vol. 1 : The Sockets Networking API (3rd edition, seciton 7.5) :
"When setting the size of the TCP socket receive buffer, the ordering of the

function calls is important.  This is because of TCP’s window scale option,

which is exchanged with the peer on SYN segments when the connection is

established. For a client, this means the SO_RCVBUF socket option must be

set before calling connect.  For a server, this means the socket option must

be set for the listening socket before calling listen.  Setting this option

for the connected socket will have no effect whatsoever on the possible window

scale option because accept does not return with the connected socket until

TCP’s three-way handshake is complete.  This is why the option must be set on

the listening socket. (The sizes of the socket buffers are always inherited from

the listening socket by the newly created connected socket)"
Signed-off-by : Joel Cunningham <joel.cunningham@me.com>

Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>

[D H] libavformat/tcp.c

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Richard Stallman et le logiciel libre

Stereo master soundtrack

Elephants Dream - Cover of the soundtrack

#7 Ambience

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Personnaliser en ajoutant son logo, sa bannière ou son image de fond

MediaSPIP v0.2

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FFmpeg retrieve a specific program from TS file

Merge commit 'bd6496fa07e32fd09ceb79404f9af43df959bcb2'

tcp : set socket buffer sizes before listen/connect/accept

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