Lost audio stream

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Lost audio stream

Tung Tran
Dear all

I am seeking for helps with my issue of losing audio streams when receiving
signal from Decklink SDI input, on rtmp outout, the audio stream was
missing after couple seconds, but I check on SDI then audio was normal.

Below is my command :

 ffmpeg -format_code Hi59 -video_input sdi -audio_input embedded -channels
2 -f decklink -i DeckLink SDI 4K -filter_complex
[0:v]split=2[in1][in2];[in1]scale=1280:-1,format=yuv420p[
out1];[in2]thumbnail,scale=480:270,fps=1/2[out2] -map [out1] -map 0:a
-framerate 30 -c:v libx264 -tune zerolatency -crf 20 -preset veryfast
-profile:v high422 -aspect 16:9 -r 29.97 -g 60 -vb 2000k -c:a aac -ab 128k
-ar 48000 -f flv rtmp://x.x.x.x:1935/live/hou-std1-ff -map [out2] -y -f
image2 -update 1 /tmp/thumb/58e8032c9db24f9b35c4bbed.jpg


Log:

ffmpeg version N-85600-g9ef21a8 Copyright (c) 2000-2017 the FFmpeg
developers
  built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-11)
  configuration: --prefix=/opt/ffmpeg --extra-cflags='-I$/opt/ffmpeg/include'
--extra-ldflags='-L/opt/ffmpeg/lib -ldl' --bindir=/opt/ffmpeg/bin --pkg
-config-flags=--static --enable-gpl --enable-nonfree --enable-libfdk_aac
--enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis
 --enable-libvpx --enable-libx264 --enable-libx265 --enable-decklink
--extra-cflags=-I/root/ffmpeg_source/Blackmagic_DeckLink_
SDK_10.8.6/Linux/includ
e --extra-ldflags=-L/root/ffmpeg_source/Blackmagic_
DeckLink_SDK_10.8.6/Linux/include
  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. 85.100 /  6. 85.100
  libswscale      4.  7.101 /  4.  7.101
  libswresample   2.  8.100 /  2.  8.100
  libpostproc    54.  6.100 / 54.  6.100

[decklink @ 0x3d28d80] Found Decklink mode 1920 x 1080 with rate 29.97(i)

Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, decklink, from 'DeckLink SDI 4K':
  Duration: N/A, start: 0.000000, bitrate: 995869 kb/s

    Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
    Stream #0:1: Video: rawvideo (UYVY / 0x59565955), uyvy422, 1920x1080,
994333 kb/s, 29.97 tbr, 1000k tbn, 1000k tbc

Stream mapping:
  Stream #0:1 (rawvideo) -> split (graph 0)
  format (graph 0) -> Stream #0:0 (libx264)
  Stream #0:0 -> #0:1 (pcm_s16le (native) -> aac (native))
  fps (graph 0) -> Stream #1:0 (mjpeg)
Press [q] to stop, [?] for help

[swscaler @ 0x3e403a0] deprecated pixel format used, make sure you did set
range correctly

[libx264 @ 0x3d43fc0] using SAR=1/1

[libx264 @ 0x3d43fc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2

[libx264 @ 0x3d43fc0] profile High, level 3.1

[libx264 @ 0x3d43fc0] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft
2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblo
ck=1:0:0 analyse=0x3:0x113 me=hex subme=2 psy=1 psy_rd=1.00:0.00
mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11
fast_psk
ip=1 chroma_qp_offset=0 threads=8 lookahead_threads=8 sliced_threads=1
slices=8 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0
bfra
mes=0 weightp=1 keyint=60 keyint_min=6 scenecut=40 intra_refresh=0 rc=crf
mbtree=0 crf=20.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1
.00

Output #1, image2, to '/tmp/thumb/58e8032c9db24f9b35c4bbed.jpg':
  Metadata:
    encoder         : Lavf57.72.101
    Stream #1:0: Video: mjpeg, yuvj444p(pc), 480x270, q=2-31, 200 kb/s,
0.50 fps, 0.50 tbn, 0.50 tbc

    Metadata:
      encoder         : Lavc57.93.100 mjpeg
    Side data:
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1

Output #0, flv, to 'rtmp://x.x.x.x:1935/live/hou-std1-ff':
  Metadata:
    encoder         : Lavf57.72.101
    Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007),
yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 2000 kb/s,
29.97 fps, 1k
tbn, 29.97 tbc
    Metadata:
      encoder         :
Lavc57.93.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/2000000 buffer size: 0 vbv_delay: -1
    Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz,
stereo, fltp, 128 kb/s
    Metadata:
      encoder         : Lavc57.93.100 aac

frame=    3 fps=0.0 q=24.0 q=0.0 size=     119kB time=00:00:00.06
bitrate=14334.2kbits/s speed=0.125x
frame=   12 fps= 11 q=23.0 q=0.0 size=     236kB time=00:00:00.36
bitrate=5261.7kbits/s speed=0.346x
frame=   21 fps= 13 q=23.0 q=0.0 size=     359kB time=00:00:00.66
bitrate=4397.1kbits/s speed=0.423x
frame=   30 fps= 14 q=23.0 q=0.0 size=     482kB time=00:00:00.96
bitrate=4071.3kbits/s speed=0.463x
frame=   39 fps= 15 q=23.0 q=0.0 size=     606kB time=00:00:01.26
bitrate=3910.9kbits/s speed=0.486x
frame=   48 fps= 15 q=23.0 q=0.0 size=     746kB time=00:00:01.56
bitrate=3893.9kbits/s speed=0.503x
frame=   57 fps= 16 q=23.0 q=0.0 size=     873kB time=00:00:01.87
bitrate=3823.7kbits/s speed=0.515x
frame=   65 fps= 16 q=23.0 q=0.0 size=    1035kB time=00:00:02.13
bitrate=3969.0kbits/s speed=0.515x
frame=   74 fps= 16 q=23.0 q=0.0 size=    1164kB time=00:00:02.43
bitrate=3913.1kbits/s speed=0.523x
frame=   83 fps= 16 q=23.0 q=0.0 size=    1297kB time=00:00:02.73
bitrate=3881.8kbits/s speed=0.529x
frame=   92 fps= 16 q=23.0 q=0.0 size=    1423kB time=00:00:03.03
bitrate=3838.6kbits/s speed=0.534x
[Parsed_thumbnail_3 @ 0x3d4fa20] frame id #64 (pts_time=2.135466) selected
from a set of 100 images

frame=  101 fps= 16 q=23.0 q=0.0 size=    1547kB time=00:00:03.33
bitrate=3795.7kbits/s speed=0.537x
frame=  111 fps= 17 q=23.0 q=0.0 size=    1687kB time=00:00:03.67
bitrate=3765.5kbits/s speed=0.547x
frame=  120 fps= 17 q=23.0 q=0.0 size=    1817kB time=00:00:03.97
bitrate=3747.9kbits/s speed=0.548x
frame=  129 fps= 17 q=23.0 q=0.0 size=    2007kB time=00:00:04.27
bitrate=3848.1kbits/s speed=0.548x
frame=  139 fps= 17 q=23.0 q=0.0 size=    2149kB time=00:00:04.60
bitrate=3821.4kbits/s speed=0.552x
frame=  149 fps= 17 q=23.0 q=0.0 size=    2273kB time=00:00:04.93
bitrate=3770.0kbits/s speed=0.558x
frame=  158 fps= 17 q=23.0 q=0.0 size=    2426kB time=00:00:05.24
bitrate=3792.0kbits/s speed=0.558x
frame=  168 fps= 17 q=23.0 q=0.0 size=    2541kB time=00:00:05.57
bitrate=3734.5kbits/s speed=0.564x
frame=  177 fps= 17 q=23.0 q=0.0 size=    2683kB time=00:00:05.87
bitrate=3741.5kbits/s speed=0.563x
frame=  186 fps= 17 q=23.0 q=0.0 size=    2872kB time=00:00:06.17
bitrate=3810.5kbits/s speed=0.565x
frame=  196 fps= 17 q=23.0 q=0.0 size=    3011kB time=00:00:06.50
bitrate=3789.9kbits/s speed=0.567x
[Parsed_thumbnail_3 @ 0x3d4fa20] frame id #56 (pts_time=5.205200) selected
from a set of 100 images

frame=  205 fps= 17 q=23.0 q=1.6 size=    3133kB time=00:00:06.80
bitrate=3770.0kbits/s dup=1 drop=0 speed=0.568x
frame=  215 fps= 17 q=23.0 q=1.6 size=    3273kB time=00:00:07.14
bitrate=3754.2kbits/s dup=1 drop=0 speed=0.57x
frame=  225 fps= 17 q=23.0 q=1.6 size=    3414kB time=00:00:07.47
bitrate=3741.0kbits/s dup=1 drop=0 speed=0.572x
frame=  235 fps= 17 q=23.0 q=1.6 size=    3554kB time=00:00:07.80
bitrate=3728.2kbits/s dup=1 drop=0 speed=0.575x
frame=  245 fps= 17 q=23.0 q=1.6 size=    3762kB time=00:00:08.14
bitrate=3785.0kbits/s dup=1 drop=0 speed=0.576x
frame=  255 fps= 17 q=23.0 q=1.6 size=    3900kB time=00:00:08.47
bitrate=3769.4kbits/s dup=1 drop=0 speed=0.578x
frame=  265 fps= 17 q=23.0 q=1.6 size=    4037kB time=00:00:08.81
bitrate=3753.4kbits/s dup=1 drop=0 speed=0.58x
frame=  275 fps= 18 q=23.0 q=1.6 size=    4193kB time=00:00:09.14
bitrate=3757.1kbits/s dup=1 drop=0 speed=0.582x
frame=  285 fps= 18 q=23.0 q=1.6 size=    4316kB time=00:00:09.47
bitrate=3730.9kbits/s dup=1 drop=0 speed=0.584x
frame=  295 fps= 18 q=23.0 q=1.6 size=    4453kB time=00:00:09.81
bitrate=3718.5kbits/s dup=1 drop=0 speed=0.585x
[Parsed_thumbnail_3 @ 0x3d4fa20] frame id #52 (pts_time=8.408400) selected
from a set of 100 images

frame=  305 fps= 18 q=23.0 q=1.6 size=    4649kB time=00:00:10.14
bitrate=3754.7kbits/s dup=1 drop=0 speed=0.587x
frame=  314 fps= 18 q=23.0 q=1.6 size=    4801kB time=00:00:10.44
bitrate=3765.4kbits/s dup=1 drop=0 speed=0.587x
frame=  324 fps= 18 q=23.0 q=1.6 size=    4930kB time=00:00:10.77
bitrate=3746.9kbits/s dup=1 drop=0 speed=0.588x
frame=  334 fps= 18 q=23.0 q=1.6 size=    5071kB time=00:00:11.11
bitrate=3738.3kbits/s dup=1 drop=0 speed=0.59x
frame=  344 fps= 18 q=23.0 q=1.6 size=    5226kB time=00:00:11.44
bitrate=3740.3kbits/s dup=1 drop=0 speed=0.591x
[decklink @ 0x3d28d80] Decklink input buffer overrun!

    Last message repeated 8 times
frame=  354 fps= 18 q=23.0 q=1.6 size=    5356kB time=00:00:11.77
bitrate=3724.8kbits/s dup=1 drop=0 speed=0.592x
[decklink @ 0x3d28d80] Decklink input buffer overrun!

    Last message repeated 19 times
frame=  364 fps= 18 q=23.0 q=1.6 size=    5566kB time=00:00:12.11
bitrate=3764.2kbits/s dup=1 drop=0 speed=0.594x
[decklink @ 0x3d28d80] Decklink input buffer overrun!

    Last message repeated 19 times
frame=  374 fps= 18 q=23.0 q=1.6 size=    5707kB time=00:00:12.44
bitrate=3755.9kbits/s dup=1 drop=0 speed=0.596x
[decklink @ 0x3d28d80] Decklink input buffer overrun!

    Last message repeated 19 times
frame=  384 fps= 18 q=23.0 q=1.6 size=    5851kB time=00:00:12.78
bitrate=3750.2kbits/s dup=1 drop=0 speed=0.597x
[decklink @ 0x3d28d80] Decklink input buffer overrun!
  Last message repeated 4 times
[Parsed_thumbnail_3 @ 0x3d4fa20] frame id #45 (pts_time=14.848166) selected
from a set of 100 images

[decklink @ 0x3d28d80] Decklink input buffer overrun!

    Last message repeated 16 times
frame=  507 fps= 18 q=23.0 q=1.6 size=    7812kB time=00:00:16.88
bitrate=3789.9kbits/s dup=1 drop=0 speed=0.611x
[decklink @ 0x3d28d80] Decklink input buffer overrun!

    Last message repeated 19 times
frame=  517 fps= 18 q=23.0 q=1.6 size=    7960kB time=00:00:17.21
bitrate=3787.1kbits/s dup=1 drop=0 speed=0.612x
[decklink @ 0x3d28d80] Decklink input buffer overrun!

    Last message repeated 19 times
frame=  527 fps= 18 q=23.0 q=1.6 size=    8105kB time=00:00:17.55
bitrate=3782.9kbits/s dup=1 drop=0 speed=0.613x
[decklink @ 0x3d28d80] Decklink input buffer overrun!

    Last message repeated 19 times
frame=  537 fps= 18 q=23.0 q=1.6 size=    8256kB time=00:00:17.88
bitrate=3781.3kbits/s dup=1 drop=0 speed=0.614x
[decklink @ 0x3d28d80] Decklink input buffer overrun!

    Last message repeated 19 times
frame=  547 fps= 18 q=23.0 q=1.6 size=    8469kB time=00:00:18.21
bitrate=3808.0kbits/s dup=1 drop=0 speed=0.615x
[decklink @ 0x3d28d80] Decklink input buffer overrun!

    Last message repeated 21 times
frame=  557 fps= 18 q=23.0 q=1.6 size=    8617kB time=00:00:18.55
bitrate=3805.0kbits/s dup=1 drop=0 speed=0.615x
[decklink @ 0x3d28d80] Decklink input buffer overrun!

    Last message repeated 19 times
frame=  567 fps= 18 q=23.0 q=1.6 size=    8768kB time=00:00:18.88
bitrate=3802.9kbits/s dup=1 drop=0 speed=0.616x
[decklink @ 0x3d28d80] Decklink input buffer overrun!

    Last message repeated 19 times
...


---
Best regards,

*Tung Tran*
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Re: Lost audio stream

Reuben Martin
On Tuesday, June 13, 2017 10:43:47 AM CDT Tung Tran wrote:
> [decklink @ 0x3d28d80] Decklink input buffer overrun!

Your encoder(s) is not keeping up. You will notice that in the stderr output
that they are reporting approx 17fps. You input is 29.97. So your input buffer
is filling up till it overflows.

-Reuben
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Re: Lost audio stream

Tung Tran
Hi Reuben
Thanks for your answer, so you think the reason ffmpeg lost the audio input
was the server performance?


---
Best regards,

*Tung Tran*

*UNO IPTV*

*V247 Enterprise Corp*Phone: 713.358.2257
9999 Bellaire Blvd., Ste. 1111* | *Houston, TX 77036
*[hidden email] | www.V247.com <http://www.v247.com/>*


On Tue, Jun 13, 2017 at 6:59 PM, Reuben Martin <[hidden email]> wrote:

> On Tuesday, June 13, 2017 10:43:47 AM CDT Tung Tran wrote:
> > [decklink @ 0x3d28d80] Decklink input buffer overrun!
>
> Your encoder(s) is not keeping up. You will notice that in the stderr
> output
> that they are reporting approx 17fps. You input is 29.97. So your input
> buffer
> is filling up till it overflows.
>
> -Reuben
> _______________________________________________
> ffmpeg-user mailing list
> [hidden email]
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> [hidden email] with subject "unsubscribe".
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Re: Lost audio stream

Reuben Martin
On Wednesday, June 14, 2017 9:59:47 AM CDT Tung Tran wrote:
> Hi Reuben
> Thanks for your answer, so you think the reason ffmpeg lost the audio input
> was the server performance?

Yes.

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