[FFmpeg-user] set timestamps to system clock for rtmp streams (and issue with decklink video_pts new option)
pkv.stream
pkv.stream at gmail.com
Thu Jul 14 16:05:20 EEST 2016
hello,
*Issue:*
I need to synchronize several live rtmp streams on different pcs; the
pcs are synchronized by ntp.
Instead of starting with 0, I'd like the timestamps to start with the
system time.
This can be done with flash media live encoder, but ffmpeg is required
for this project.
I use decklink capture cards (studio 4K).
=============================================
I am using the latest static build on windows by zeranoe
ffmpeg version N-80980-g7af44ce Copyright (c) 2000-2016 the FFmpeg
developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth
--enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray
--enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
--enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libopenjpeg --enable-libopus --enable-librtmp
--enable-libschroedinger --enable-libsnappy --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg
--enable-lzma --enable-decklink --enable-zlib
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 50.100 / 57. 50.100
libavformat 57. 41.100 / 57. 41.100
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 47.100 / 6. 47.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
==========================================
*what I tried:*
I tried several parameters on the output:
(1) -timestamp now -f flv rtmp://IP
===> throws error: Failed to parse creation_time
2016-07-14T12:12:49Paris, Madrid
=== console output ===
ffmpeg -channels 2 -f decklink -i "DeckLink Studio 4K at 13" -map 0:v -c:v
libx264 -s 1920x1080 -r 60 -pix_fmt yuv420p -preset ultrafast -b:v 5000k
-minrate 5000k -maxrate 5000k -bufsize:v 10000k -profile:v high -g 120
-map 0:a -c:a aac -ab 64k -ac 2 -timestamp now -bsf:a aac_adtstoasc -f
flv rtmp://IP:1935/livets/streamFR
ffmpeg version N-80980-g7af44ce Copyright (c) 2000-2016 the FFmpeg
developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth
--enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray
--enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
--enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libopenjpeg --enable-libopus --enable-librtmp
--enable-libschroedinger --enable-libsnappy --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg
--enable-lzma --enable-decklink --enable-zlib
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 50.100 / 57. 50.100
libavformat 57. 41.100 / 57. 41.100
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 47.100 / 6. 47.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
[decklink @ 0000000001f72e40] Found Decklink mode 1920 x 1080 with rate
60.00
[decklink @ 0000000001f72e40] Stream #1: not enough frames to estimate
rate; consider increasing probesize
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, decklink, from 'DeckLink Studio 4K at 13':
Duration: N/A, start: 0.000000, bitrate: 1992192 kb/s
Stream #0:0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Stream #0:1: Video: rawvideo (UYVY / 0x59565955), uyvy422,
1920x1080, 1990656 kb/s, 1000k tbr, 1000k tbn, 1000k tbc
*timestamp is deprecated, set the 'creation_time' metadata tag instead.*
[libx264 @ 0000000001f7ac80] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0000000001f7ac80] profile Constrained Baseline, level 4.2
[libx264 @ 0000000001f7ac80] 264 - core 148 r2705 3f5ed56 - H.264/MPEG-4
AVC codec - Copyleft 2003-2016 - 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=12
lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0
bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=120
keyint_min=12 scenecut=0 intra_refresh=0 rc_lookahead=0 rc=cbr mbtree=0
bitrate=5000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4
vbv_maxrate=5000 vbv_bufsize=10000 nal_hrd=none filler=0 ip_ratio=1.40 aq=0
[flv @ 0000000001f797e0] *Using AVStream.codec to pass codec parameters
to muxers is deprecated, use AVStream.codecpar instead.*
Last message repeated 1 times
[flv @ 0000000001f797e0] *Failed to parse creation_time
2016-07-14T12:54:34Romance Standard Time*
Output #0, flv, to 'rtmp://IP:1935/livets/streamFR':
Metadata:
creation_time : 2016-07-14T12:54:34Romance Standard Time
encoder : Lavf57.41.100
Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007),
yuv420p, 1920x1080, q=-1--1, 5000 kb/s, 60 fps, 1k tbn, 60 tbc
Metadata:
encoder : Lavc57.50.100 libx264
Side data:
cpb: bitrate max/min/avg: 5000000/0/5000000 buffer size: 10000000
vbv_delay: -1
Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz,
stereo, fltp, 64 kb/s
Metadata:
encoder : Lavc57.50.100 aac
Stream mapping:
Stream #0:1 -> #0:0 (rawvideo (native) -> h264 (libx264))
Stream #0:0 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[flv @ 0000000001f797e0] *Failed to update header with correct
duration*..7kbits/s speed=1.04x
[flv @ 0000000001f797e0] Failed to update header with correct filesize.
frame= 503 fps= 62 q=-1.0 Lsize= 4689kB time=00:00:08.36
bitrate=4589.9kbits/s speed=1.04x
video:4606kB audio:66kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 0.359983%
[libx264 @ 0000000001f7ac80] frame I:5 Avg QP:19.55 size:391234
[libx264 @ 0000000001f7ac80] frame P:498 Avg QP:18.15 size: 5541
[libx264 @ 0000000001f7ac80] mb I I16..4: 100.0% 0.0% 0.0%
[libx264 @ 0000000001f7ac80] mb P I16..4: 1.8% 0.0% 0.0% P16..4:
8.6% 0.0% 0.0% 0.0% 0.0% skip:89.6%
[libx264 @ 0000000001f7ac80] coded y,uvDC,uvAC intra: 36.3% 32.1% 18.9%
inter: 3.2% 2.8% 0.5%
[libx264 @ 0000000001f7ac80] i16 v,h,dc,p: 39% 28% 20% 13%
[libx264 @ 0000000001f7ac80] i8c dc,h,v,p: 62% 17% 16% 6%
[libx264 @ 0000000001f7ac80] kb/s:4500.18
[aac @ 0000000001f7c760] Qavg: 388.946
Exiting normally, received signal 2.
===
(2) Also on the input:
-use_wallclock_as_timestamps 1
e.g
ffmpeg -use_wallclock_as_timestamps 1 -f input device
which fails also (errors in red bold below); the timestamps still start
with 0.
=== console output ===
ffmpeg -use_wallclock_as_timestamps 1 -channels 2 -f decklink -i
"DeckLink Studio 4K at 13" -map 0:v -c:v libx264 -s 1920x1080 -r 60
-pix_fmt yuv420p -preset ultrafast -b:v 5000k -minrate 5000k -maxrate
5000k -bufsize:v 10000k -profile:v high -g 120 -map 0:a -c:a aac -ab 64k
-ac 2 -bsf:a aac_adtstoasc -f flv rtmp://IP:1935/livets/streamFR
ffmpeg version N-80980-g7af44ce Copyright (c) 2000-2016 the FFmpeg
developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth
--enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray
--enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
--enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libopenjpeg --enable-libopus --enable-librtmp
--enable-libschroedinger --enable-libsnappy --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg
--enable-lzma --enable-decklink --enable-zlib
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 50.100 / 57. 50.100
libavformat 57. 41.100 / 57. 41.100
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 47.100 / 6. 47.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
[decklink @ 0000000000d62ee0] Found Decklink mode 1920 x 1080 with rate
60.00
[decklink @ 0000000000d62ee0] Frame received (#1) - Input returned -
Frames dropped 1
[decklink @ 0000000000d62ee0] Stream #1: not enough frames to estimate
rate; consider increasing probesize
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, decklink, from 'DeckLink Studio 4K at 13':
Duration: N/A, start: 1468500221.512644, bitrate: 1992192 kb/s
Stream #0:0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Stream #0:1: Video: rawvideo (UYVY / 0x59565955), uyvy422,
1920x1080, 1990656 kb/s, 1000k tbr, 1000k tbn, 1000k tbc
[libx264 @ 0000000000d69ea0] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0000000000d69ea0] profile Constrained Baseline, level 4.2
[libx264 @ 0000000000d69ea0] 264 - core 148 r2705 3f5ed56 - H.264/MPEG-4
AVC codec - Copyleft 2003-2016 - 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=12
lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0
bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=120
keyint_min=12 scenecut=0 intra_refresh=0 rc_lookahead=0 rc=cbr mbtree=0
bitrate=5000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4
vbv_maxrate=5000 vbv_bufsize=10000 nal_hrd=none filler=0 ip_ratio=1.40 aq=0
[flv @ 0000000000d68a00] Using AVStream.codec to pass codec parameters
to muxers is deprecated, use AVStream.codecpar instead.
Last message repeated 1 times
Output #0, flv, to 'rtmp://IP:1935/livets/streamFR':
Metadata:
encoder : Lavf57.41.100
Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007),
yuv420p, 1920x1080, q=-1--1, 5000 kb/s, 60 fps, 1k tbn, 60 tbc
Metadata:
encoder : Lavc57.50.100 libx264
Side data:
cpb: bitrate max/min/avg: 5000000/0/5000000 buffer size: 10000000
vbv_delay: -1
Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz,
stereo, fltp, 64 kb/s
Metadata:
encoder : Lavc57.50.100 aac
Stream mapping:
Stream #0:1 -> #0:0 (rawvideo (native) -> h264 (libx264))
Stream #0:0 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[aac @ 0000000000d6ba20] *Queue input is backward in time*
[flv @ 0000000000d68a00] *Non-monotonous DTS in output stream* 0:1;
previous: 292, current: 285; changing to 292. This may result in
incorrect timestamps in the output file.
[aac @ 0000000000d6ba20] Queue input is backward in time
[flv @ 0000000000d68a00] Non-monotonous DTS in output stream 0:1;
previous: 304, current: 297; changing to 304. This may result in
incorrect timestamps in the output file.
[aac @ 0000000000d6ba20] Queue input is backward in time
[flv @ 0000000000d68a00] Non-monotonous DTS in output stream 0:1;
previous: 311, current: 301; changing to 311. This may result in
incorrect timestamps in the output file.
[flv @ 0000000000d68a00] Non-monotonous DTS in output stream 0:1;
previous: 311, current: 308; changing to 311. This may result in
incorrect timestamps in the output file.
[aac @ 0000000000d6ba20] Queue input is backward in time
Past duration 0.787971 too large 1030kB time=00:00:02.26
bitrate=3727.8kbits/s dup=0 drop=13 speed=1.11x
Past duration 0.810310 too large 2203kB time=00:00:04.28
bitrate=4207.8kbits/s dup=0 drop=14 speed=1.06x
[aac @ 0000000000d6ba20] Queue input is backward in time
[flv @ 0000000000d68a00] Non-monotonous DTS in output stream 0:1;
previous: 4532, current: 4524; changing to 4532. This may result in
incorrect timestamps in the output file.
[flv @ 0000000000d68a00] Failed to update header with correct
duration.8.7kbits/s dup=0 drop=16 speed=1.04x
[flv @ 0000000000d68a00] Failed to update header with correct filesize.
frame= 350 fps= 60 q=-1.0 Lsize= 3315kB time=00:00:06.10
bitrate=4451.3kbits/s dup=0 drop=16 speed=1.05x
video:3255kB audio:48kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 0.363177%
[libx264 @ 0000000000d69ea0] frame I:3 Avg QP:24.33 size:309616
[libx264 @ 0000000000d69ea0] frame P:347 Avg QP:20.61 size: 6928
[libx264 @ 0000000000d69ea0] mb I I16..4: 100.0% 0.0% 0.0%
[libx264 @ 0000000000d69ea0] mb P I16..4: 1.2% 0.0% 0.0% P16..4:
5.3% 0.0% 0.0% 0.0% 0.0% skip:93.6%
[libx264 @ 0000000000d69ea0] coded y,uvDC,uvAC intra: 48.0% 45.5% 36.4%
inter: 2.3% 2.8% 1.7%
[libx264 @ 0000000000d69ea0] i16 v,h,dc,p: 47% 38% 12% 3%
[libx264 @ 0000000000d69ea0] i8c dc,h,v,p: 44% 33% 20% 2%
[libx264 @ 0000000000d69ea0] kb/s:4359.08
[aac @ 0000000000d6ba20] Qavg: 169.891
Exiting normally, received signal 2.
==
(3) I am using a decklink capture card so I tried the brand new option
-video_pts wallclock and -audio_pts wallclock
The timestamps still start with zero. No error thrown.
=== console output ===
ffmpeg -video_pts wallclock -audio_pts wallclock -channels 2 -f decklink
-i "DeckLink Studio 4K at 13" -map 0:v -c:v libx264 -s 1920x1080 -r 60
-pix_fmt yuv420p -preset ultrafast -b:v 5000k -minrate 5000k -maxrate
5000k -bufsize:v 10000k -profile:v high -g 120 -map 0:a -c:a aac -ab 64k
-ac 2 -bsf:a aac_adtstoasc -f flv rtmp://IP:1935/livets/streamFR
ffmpeg version N-80980-g7af44ce Copyright (c) 2000-2016 the FFmpeg
developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth
--enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray
--enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
--enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libopenjpeg --enable-libopus --enable-librtmp
--enable-libschroedinger --enable-libsnappy --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg
--enable-lzma --enable-decklink --enable-zlib
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 50.100 / 57. 50.100
libavformat 57. 41.100 / 57. 41.100
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 47.100 / 6. 47.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
[decklink @ 00000000006532c0] Found Decklink mode 1920 x 1080 with rate
60.00
[decklink @ 00000000006532c0] Frame received (#1) - Input returned -
Frames dropped 1
[decklink @ 00000000006532c0] Stream #1: not enough frames to estimate
rate; consider increasing probesize
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, decklink, from 'DeckLink Studio 4K at 13':
Duration: N/A, start: 0.000000, bitrate: 1992192 kb/s
Stream #0:0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Stream #0:1: Video: rawvideo (UYVY / 0x59565955), uyvy422,
1920x1080, 1990656 kb/s, 1000k tbr, 1000k tbn, 1000k tbc
[libx264 @ 000000000065a900] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 000000000065a900] profile Constrained Baseline, level 4.2
[libx264 @ 000000000065a900] 264 - core 148 r2705 3f5ed56 - H.264/MPEG-4
AVC codec - Copyleft 2003-2016 - 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=12
lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0
bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=120
keyint_min=12 scenecut=0 intra_refresh=0 rc_lookahead=0 rc=cbr mbtree=0
bitrate=5000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4
vbv_maxrate=5000 vbv_bufsize=10000 nal_hrd=none filler=0 ip_ratio=1.40 aq=0
[flv @ 0000000000659660] Using AVStream.codec to pass codec parameters
to muxers is deprecated, use AVStream.codecpar instead.
Last message repeated 1 times
Output #0, flv, to 'rtmp://IP:1935/livets/streamFR':
Metadata:
encoder : Lavf57.41.100
Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007),
yuv420p, 1920x1080, q=-1--1, 5000 kb/s, 60 fps, 1k tbn, 60 tbc
Metadata:
encoder : Lavc57.50.100 libx264
Side data:
cpb: bitrate max/min/avg: 5000000/0/5000000 buffer size: 10000000
vbv_delay: -1
Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz,
stereo, fltp, 64 kb/s
Metadata:
encoder : Lavc57.50.100 aac
Stream mapping:
Stream #0:1 -> #0:0 (rawvideo (native) -> h264 (libx264))
Stream #0:0 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[flv @ 0000000000659660] Failed to update header with correct
duration.4.9kbits/s speed=1.01x
[flv @ 0000000000659660] Failed to update header with correct filesize.
frame= 1674 fps= 61 q=-1.0 Lsize= 17019kB time=00:00:27.88
bitrate=4999.9kbits/s speed=1.01x
video:16743kB audio:221kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 0.323169%
[libx264 @ 000000000065a900] frame I:14 Avg QP:19.07 size:367124
[libx264 @ 000000000065a900] frame P:1660 Avg QP:16.48 size: 7231
[libx264 @ 000000000065a900] mb I I16..4: 100.0% 0.0% 0.0%
[libx264 @ 000000000065a900] mb P I16..4: 1.7% 0.0% 0.0% P16..4:
10.0% 0.0% 0.0% 0.0% 0.0% skip:88.3%
[libx264 @ 000000000065a900] coded y,uvDC,uvAC intra: 35.6% 46.2% 24.2%
inter: 3.6% 4.5% 0.8%
[libx264 @ 000000000065a900] i16 v,h,dc,p: 32% 35% 18% 15%
[libx264 @ 000000000065a900] i8c dc,h,v,p: 50% 25% 17% 8%
[libx264 @ 000000000065a900] kb/s:4915.84
[aac @ 000000000065d4a0] Qavg: 472.232
Exiting normally, received signal 2.
===========
Any idea ? sorry for posting such a long post ...
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