[FFmpeg-user] ffmpeg can't stream video using rtsp ... Could not write header for output file #0

[Roman Rusconi]

Hello.



I'm trying to re stream an rtsp stream using ffmpeg.

I have no problem getting the original rtsp stream and write it to a file,
although I can't get ffmpeg to stream this video again using rtsp.

Everything seems fine until the point ffmpeg gets stuck and only stops if I
press CTRL-C, at this point I get an error message saying:



"Could not write header for output file #0 (incorrect codec parameters ?):
Immediate exit requested"



Here's the command line I'm using :



"ffmpeg.exe -v debug -stats -i rtsp://192.168.1.40/rus -vcodec copy -an -f
rtsp -c copy rstp://localhost:554/video"



I can't get it to work.

Any ideas what I'm doing wrong?

Here's what I get on screen:





ffmpeg.exe -v debug -stats -i rtsp://192.168.1.40/rus -vcodec copy -an -f
rtsp -c copy rstp://localhost:554/video

ffmpeg version N-75275-gd13a2df Copyright (c) 2000-2015 the FFmpeg
developers

built with gcc 4.9.3 (GCC)

configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfi

g --enable-frei0r --enable-gnutls --enable-iconv --enable-libass
--enable-libbluray --enable-libbs2b --enable-libcaca --

enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm
--enable-libilbc --enable-libmodplug --enable-libm

p3lame --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libopenjpeg --enable-libopus --enable-librtmp --en

able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora
--enable-libtwolame --enable-libvidstab --ena

ble-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enabl

e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma
--enable-decklink --enable-zlib

libavutil 55. 2.100 / 55. 2.100

libavcodec 57. 1.100 / 57. 1.100

libavformat 57. 0.100 / 57. 0.100

libavdevice 57. 0.100 / 57. 0.100

libavfilter 6. 3.100 / 6. 3.100

libswscale 4. 0.100 / 4. 0.100

libswresample 2. 0.100 / 2. 0.100

libpostproc 54. 0.100 / 54. 0.100

Splitting the commandline.

Reading option '-v' ... matched as option 'v' (set logging level) with
argument 'debug'.

Reading option '-stats' ... matched as option 'stats' (print progress report
during encoding) with argument '1'.

Reading option '-i' ... matched as input file with argument
'rtsp://192.168.1.40/rus'.

Reading option '-vcodec' ... matched as option 'vcodec' (force video codec
('copy' to copy stream)) with argument 'copy'

.

Reading option '-an' ... matched as option 'an' (disable audio) with
argument '1'.

Reading option '-f' ... matched as option 'f' (force format) with argument
'rtsp'.

Reading option '-c' ... matched as option 'c' (codec name) with argument
'copy'.

Reading option 'rstp://localhost:554/video' ... matched as output file.

Finished splitting the commandline.

Parsing a group of options: global .

Applying option v (set logging level) with argument debug.

Applying option stats (print progress report during encoding) with argument
1.

Successfully parsed a group of options.

Parsing a group of options: input file rtsp://192.168.1.40/rus.

Successfully parsed a group of options.

Opening an input file: rtsp://192.168.1.40/rus.

[rtsp @ 0000000002fd0b20] SDP:

v=0

o=- 15681997790323947713 15681997790323947713 IN IP4 WIN-KOKF06L712E

s=Unnamed

i=N/A

c=IN IP4 0.0.0.0

t=0 0

a=tool:vlc 2.2.1

a=recvonly

a=type:broadcast

a=charset:UTF-8

a=control:rtsp://192.168.1.40:554/rus

m=video 0 RTP/AVP 96

b=RR:0

a=rtpmap:96 H264/90000

a=fmtp:96
packetization-mode=1;profile-level-id=4d001f;sprop-parameter-sets=Z00AH5pmAo
At/zUBAQFAAAD6AAAw1AE=,aO48gA==;

a=control:rtsp://192.168.1.40:554/rus/trackID=0



[rtsp @ 0000000002fd0b20] video codec set to: h264

[rtsp @ 0000000002fd0b20] RTP Packetization Mode: 1

[rtsp @ 0000000002fd0b20] RTP Profile IDC: 4d Profile IOP: 0 Level: 1f

[rtsp @ 0000000002fd0b20] Extradata set to 0000000002fd4ec0 (size: 35)

[udp @ 0000000002fcd8c0] end receive buffer size reported is 65536

[udp @ 0000000002fcd980] end receive buffer size reported is 65536

[rtsp @ 0000000002fd0b20] hello state=0

Failed to parse interval end specification ''

[h264 @ 0000000002fd49a0] Frame num gap 8 5

[h264 @ 0000000002fd49a0] Frame num gap 8 6

[rtsp @ 0000000002fd0b20] All info found

[rtsp @ 0000000002fd0b20] rfps: 24.416667 0.017830

[rtsp @ 0000000002fd0b20] rfps: 24.500000 0.013091

[rtsp @ 0000000002fd0b20] rfps: 24.583333 0.009091

Last message repeated 1 times

[rtsp @ 0000000002fd0b20] rfps: 24.666667 0.005830

[rtsp @ 0000000002fd0b20] rfps: 24.750000 0.003309

Last message repeated 1 times

[rtsp @ 0000000002fd0b20] rfps: 24.833333 0.001527

Last message repeated 1 times

[rtsp @ 0000000002fd0b20] rfps: 24.916667 0.000485

Last message repeated 1 times

[rtsp @ 0000000002fd0b20] rfps: 25.000000 0.000181

Last message repeated 1 times

[rtsp @ 0000000002fd0b20] rfps: 25.083333 0.000618

[rtsp @ 0000000002fd0b20] rfps: 25.166667 0.001793

Last message repeated 1 times

[rtsp @ 0000000002fd0b20] rfps: 25.250000 0.003708

[rtsp @ 0000000002fd0b20] rfps: 25.333333 0.006362

[rtsp @ 0000000002fd0b20] rfps: 25.416667 0.009755

[rtsp @ 0000000002fd0b20] rfps: 25.500000 0.013888

[rtsp @ 0000000002fd0b20] rfps: 25.583333 0.018760

Last message repeated 1 times

[rtsp @ 0000000002fd0b20] rfps: 50.000000 0.000726

Last message repeated 1 times

Input #0, rtsp, from 'rtsp://192.168.1.40/rus':

Metadata:

title : Unnamed

comment : N/A

Duration: N/A, start: 12482.051344, bitrate: N/A

Stream #0:0, 45, 1/90000: Video: h264 (Main), 2 reference frames,
yuv420p(tv, bt709, left), 1280x720, 1/50, 25 fps,

25 tbr, 90k tbn, 50 tbc

Successfully opened the file.

Parsing a group of options: output file rstp://localhost:554/video.

Applying option vcodec (force video codec ('copy' to copy stream)) with
argument copy.

Applying option an (disable audio) with argument 1.

Applying option f (force format) with argument rtsp.

Applying option c (codec name) with argument copy.

Successfully parsed a group of options.

Opening an output file: rstp://localhost:554/video.

Successfully opened the file.

[rtsp @ 00000000066a3900] Codec for stream 0 does not use global headers but
container format requires global headers



Received windows signal 0

Output #0, rtsp, to 'rstp://localhost:554/video':

Metadata:

title : Unnamed

comment : N/A

encoder : Lavf57.0.100

Stream #0:0, 0, 1/25: Video: h264, 1 reference frame, yuv420p(left),
1280x720 (0x0), 1/25, q=2-31, 25 fps, 25 tbr, 2

5 tbn, 25 tbc

Stream mapping:

Stream #0:0 -> #0:0 (copy)

Could not write header for output file #0 (incorrect codec parameters ?):
Immediate exit requested

Exiting normally, received signal 2.











Roman Rusconi

***@gmail.com

[Rodney Baker]

Post by Roman Rusconi
Hello.
I'm trying to re stream an rtsp stream using ffmpeg.
I have no problem getting the original rtsp stream and write it to a file,
although I can't get ffmpeg to stream this video again using rtsp.
Everything seems fine until the point ffmpeg gets stuck and only stops if I
Immediate exit requested"

This line here...

Post by Roman Rusconi
container format requires global headers

...and this line here...

Post by Roman Rusconi
Immediate exit requested
Exiting normally, received signal 2.

.
...would appear to be related. Check your command line parameters. The order of
options is significant.

However, the errors may be misleading - you do seem to have an error in your

Post by Roman Rusconi
ffmpeg.exe -v debug -stats -i rtsp://192.168.1.40/rus -vcodec copy -an -f
rtsp -c copy rstp://localhost:554/video ^^^^

Try correcting the url for the output stream first.

Having said all that, I'm not an expert - some of the dev's do watch this list and have a
much better idea of how these things work, so if this doesn't help, hopefully someone
else can. :)

Regards,
Rodney.

[Roman Rusconi]

I just made a mistake when writing the email.

The command line I used was:

ffmpeg.exe -v debug -stats -i rtsp://192.168.1.40/rus -vcodec copy -an -f rtsp -c copy rtsp://localhost:554/video

There's no RSTP, it's always RTSP what I'm using.


Roman Rusconi
***@gmail.com

-----Original Message-----
From: ffmpeg-user [mailto:ffmpeg-user-***@ffmpeg.org] On Behalf Of Rodney Baker
Sent: Thursday, October 01, 2015 12:42 PM
To: ffmpeg-***@ffmpeg.org
Subject: Re: [FFmpeg-user] ffmpeg can't stream video using rtsp ... Could not write header for output file #0

Post by Roman Rusconi
Hello.
I'm trying to re stream an rtsp stream using ffmpeg.
I have no problem getting the original rtsp stream and write it to a file,
although I can't get ffmpeg to stream this video again using rtsp.
Everything seems fine until the point ffmpeg gets stuck and only stops if I
Immediate exit requested"

This line here...

Post by Roman Rusconi
container format requires global headers

...and this line here...

Post by Roman Rusconi
Immediate exit requested
Exiting normally, received signal 2.

.
...would appear to be related. Check your command line parameters. The order of
options is significant.

However, the errors may be misleading - you do seem to have an error in your

Post by Roman Rusconi
ffmpeg.exe -v debug -stats -i rtsp://192.168.1.40/rus -vcodec copy -an -f
rtsp -c copy rstp://localhost:554/video ^^^^

Try correcting the url for the output stream first.

Having said all that, I'm not an expert - some of the dev's do watch this list and have a
much better idea of how these things work, so if this doesn't help, hopefully someone
else can. :)

Regards,
Rodney.
--
===========================================================
===
Rodney Baker VK5ZTV
***@iinet.net.au
===========================================================
===
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