Re: [FFmpeg-user] Can ffpmeg output to stdout?

[Mike Brown]

On Sun, Sep 03, 2017 at 09:27:24PM +0530, Gyan wrote:
> On Sun, Sep 3, 2017 at 9:15 PM, Cley Faye  wrote:
> 
> > To check this, you could
> > test by running the ffmpeg command by itself (which should just fill your
> > terminal with clutter and beeps).

The console did indeed fill up with the expected clutter.

> If you try this, add -t 0.1 to the command. Console can get unresponsive,
> and you seem to have a large file.

Didn't make a difference.

> Which version of ffdcaenc?

Interesting that the help for the program doesn't list a version option,
but I tried -v anyway and it worked:

2.1.3  compiled 7/27/14

MB
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Re: [FFmpeg-user] Can ffpmeg output to stdout?

[Mike Brown]

On Sun, Sep 03, 2017 at 05:45:24PM +0200, Cley Faye wrote:
> 2017-09-03 17:16 GMT+02:00 Mike Brown :
> 
> > ffmpeg version N-52837-g399f6ef Copyright (c) 2000-2013 the FFmpeg
> > developers
> >   built on May  7 2013 01:09:00 with gcc 4.7.3 (GCC)
> >
> 
> ???That's very, very old. But probably irrelevant to the problem at hand.???

Yes it is, but is the newest version that will run under XP 32bit.

> > Output #0, wav, to 'pipe:':
> >   Metadata:
> > ISFT: Lavf55.4.101
> > Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz,
> > 5.1(side), s16, 4608 kb/s
> > Stream mapping:
> >   Stream #0:1 -> #0:0 (ac3 -> pcm_s16le)
> > Press [q] to stop, [?] for help
> > size=  243306kB time=00:07:12.54 bitrate=4608.0kbits/s
> > video:0kB audio:243306kB subtitle:0 global headers:0kB muxing overhead
> > 0.41%
> >
> >
> ???ffmpeg IS outputting to stdout as far as I can tell.???

Ya, that is what it looks like to me as well.  Thanks for confirming.

> > FFDCAENC --- experimental 'Coherent Acoustics' compressor.
> >
> > Input:   -
> > Output:  ABC-HD-DD51-AudioTest.dts
> > Bitrate: 1509 kbps
> >
> > Could not open or parse "-".
> > Error: Data chunk not found!
> >
> ???I believe your issue does not lay in ffmpeg but in ffdcaenc that can not
> open stdin, as it plainly say he can't parse "-". To check this, you could
> test by running the ffmpeg command by itself (which should just fill your
> terminal with clutter and beeps). You can also try piping from a file to
> ffdcaenc to make sure it work.
> 
> But as far as ffmpeg is concerned, it is outputting to stdout from that log.

Looks like I'll just write the script to have ffmpeg output to a file and
then have ffdcaenc read in that file.  I'll just delete the temp wave file.
That I know works.

Thanks for the confirmation.

MB
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Re: [FFmpeg-user] Can ffpmeg output to stdout?

[Gyan]

On Sun, Sep 3, 2017 at 9:15 PM, Cley Faye  wrote:


> To check this, you could
> test by running the ffmpeg command by itself (which should just fill your
> terminal with clutter and beeps).
>

If you try this, add -t 0.1 to the command. Console can get unresponsive,
and you seem to have a large file.

Which version of ffdcaenc?
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Re: [FFmpeg-user] Can ffpmeg output to stdout?

[Cley Faye]

2017-09-03 17:16 GMT+02:00 Mike Brown :

> ffmpeg version N-52837-g399f6ef Copyright (c) 2000-2013 the FFmpeg
> developers
>   built on May  7 2013 01:09:00 with gcc 4.7.3 (GCC)
>

​That's very, very old. But probably irrelevant to the problem at hand.​



> Output #0, wav, to 'pipe:':
>   Metadata:
> ISFT: Lavf55.4.101
> Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz,
> 5.1(side), s16, 4608 kb/s
> Stream mapping:
>   Stream #0:1 -> #0:0 (ac3 -> pcm_s16le)
> Press [q] to stop, [?] for help
> size=  243306kB time=00:07:12.54 bitrate=4608.0kbits/s
> video:0kB audio:243306kB subtitle:0 global headers:0kB muxing overhead
> 0.41%
>
>
​ffmpeg IS outputting to stdout as far as I can tell.​



> FFDCAENC --- experimental 'Coherent Acoustics' compressor.
>
> Input:   -
> Output:  ABC-HD-DD51-AudioTest.dts
> Bitrate: 1509 kbps
>
> Could not open or parse "-".
> Error: Data chunk not found!
>
>
>
​I believe your issue does not lay in ffmpeg but in ffdcaenc that can not
open stdin, as it plainly say he can't parse "-". To check this, you could
test by running the ffmpeg command by itself (which should just fill your
terminal with clutter and beeps). You can also try piping from a file to
ffdcaenc to make sure it work.

But as far as ffmpeg is concerned, it is outputting to stdout from that log.
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Re: [FFmpeg-user] Can ffpmeg output to stdout?

[Mike Brown]

On Sun, Sep 03, 2017 at 04:13:49PM +0530, Gyan wrote:
> On Sun, Sep 3, 2017 at 4:08 PM, Mike Brown  wrote:
> 
> >
> > Doesn't exist under Win XP.  I'm running a cygwin terminal, using the
> > Z-shell.
> > Sorry for not listing my environment in the first post.
> >
> What's your full command and its console output?

BRN <97> ffmpeg -i ABC-HD-DD51-AudioTest.ts -map 0:1 -acodec pcm_s16le -f wav - 
| ffdcaenc_213-20141209 -l -i - -o ABC-HD-DD51-AudioTest.dts -b 1509.75 
  
ffmpeg version N-52837-g399f6ef Copyright (c) 2000-2013 the FFmpeg developers
  built on May  7 2013 01:09:00 with gcc 4.7.3 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads 
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r 
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray 
--enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc 
--enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb 
--enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger 
--enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame 
--enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis 
--enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  libavutil  52. 29.100 / 52. 29.100
  libavcodec 55.  7.100 / 55.  7.100
  libavformat55.  4.101 / 55.  4.101
  libavdevice55.  0.100 / 55.  0.100
  libavfilter 3. 63.101 /  3. 63.101
  libswscale  2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc52.  3.100 / 52.  3.100
Input #0, mpegts, from 'ABC-HD-DD51-AudioTest.ts':
  Duration: 00:07:12.51, start: 0.166611, bitrate: 40248 kb/s
  Program 1 
Stream #0:0[0x1000]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), 
yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn, 119.88 tbc
Stream #0:1[0x1001]: Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 
5.1(side), fltp, 640 kb/s
Output #0, wav, to 'pipe:':
  Metadata:
ISFT: Lavf55.4.101
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 5.1(side), 
s16, 4608 kb/s
Stream mapping:
  Stream #0:1 -> #0:0 (ac3 -> pcm_s16le)
Press [q] to stop, [?] for help
size=  243306kB time=00:07:12.54 bitrate=4608.0kbits/s
video:0kB audio:243306kB subtitle:0 global headers:0kB muxing overhead 0.41%
 
FFDCAENC --- experimental 'Coherent Acoustics' compressor.

Input:   -
Output:  ABC-HD-DD51-AudioTest.dts
Bitrate: 1509 kbps

Could not open or parse "-".
Error: Data chunk not found!



I did some more looking and found the -f option.  The "-" seems to have
allowed ffmpeg to work, but as can be seen, ffdcaenc complained that
it didn't get any data.  But, with a pipe, both programs should have been
running at the same time.  As ffmpeg is pumping out data, ffdcaenc should
be getting those bytes of data.  The ffdcaenc program didn't start until
ffmpeg finished.

Shouldn't piping from ffmpeg work?  It might be an issue with cygwin.

MB
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Re: [FFmpeg-user] H.265/HEVC codec encapsulation in AVI - wrong BITMAPINFOHEADER.biCompression value

[Carl Eugen Hoyos]

2017-08-31 23:27 GMT+02:00 Grégoire GOLOUBINOW :

> ffmpeg -i Tears_400_x265.mp4 -vcodec copy -f avi Tears_400_x265.avi

Please test the following:
$ ffmpeg -i input -vcodec copy -bsf hevc_mp4toannexb out.avi

The question is:
What made vlc create a new fourcc for hevc...

Carl Eugen
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Re: [FFmpeg-user] Can ffpmeg output to stdout?

[Gyan]

On Sun, Sep 3, 2017 at 4:08 PM, Mike Brown  wrote:

>
> Doesn't exist under Win XP.  I'm running a cygwin terminal, using the
> Z-shell.
> Sorry for not listing my environment in the first post.
>
> MB
>

What's your full command and its console output?
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Re: [FFmpeg-user] Can ffpmeg output to stdout?

[DopeLabs]

ok.. you also my want to reply with the full command output that you are trying 
in the email  for whoever can help you next =]

cheers


> On Sep 3, 2017, at 3:38 49AM, Mike Brown  wrote:
> 
> On Sun, Sep 03, 2017 at 12:22:36AM -0700, DopeLabs wrote:
>> any specific reason your not using ffmpeg to output a dts file?
> 
> According to users on Doom9, ffdcaenc is a better DTS encoder.
> 
>> and have you tried outputting to /dev/stdout?
> 
> Doesn't exist under Win XP.  I'm running a cygwin terminal, using the Z-shell.
> Sorry for not listing my environment in the first post.
> 
> MB
> 
>>> On Sep 2, 2017, at 11:58 41PM, Mike Brown  wrote:
>>> 
>>> I've tried using - for the output as well as nothing.  I set the audio codec
>>> with -acodec, so that the correct codec will be used, but nada.
>>> 
>>> I'd like to be able to pipe the output into another program that I'll be 
>>> using
>>> to create a DTS file.
>>> 
>>> I'm beginning to think that it can't be done.
>>> 
>>> MB
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Re: [FFmpeg-user] Can ffpmeg output to stdout?

[Mike Brown]

On Sun, Sep 03, 2017 at 12:22:36AM -0700, DopeLabs wrote:
> any specific reason your not using ffmpeg to output a dts file?

According to users on Doom9, ffdcaenc is a better DTS encoder.

> and have you tried outputting to /dev/stdout?

Doesn't exist under Win XP.  I'm running a cygwin terminal, using the Z-shell.
Sorry for not listing my environment in the first post.

MB

> > On Sep 2, 2017, at 11:58 41PM, Mike Brown  wrote:
> > 
> > I've tried using - for the output as well as nothing.  I set the audio codec
> > with -acodec, so that the correct codec will be used, but nada.
> > 
> > I'd like to be able to pipe the output into another program that I'll be 
> > using
> > to create a DTS file.
> > 
> > I'm beginning to think that it can't be done.
> > 
> > MB
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Re: [FFmpeg-user] Can ffpmeg output to stdout?

[DopeLabs]

any specific reason your not using ffmpeg to output a dts file?

and have you tried outputting to /dev/stdout?


> On Sep 2, 2017, at 11:58 41PM, Mike Brown  wrote:
> 
> I've tried using - for the output as well as nothing.  I set the audio codec
> with -acodec, so that the correct codec will be used, but nada.
> 
> I'd like to be able to pipe the output into another program that I'll be using
> to create a DTS file.
> 
> I'm beginning to think that it can't be done.
> 
> MB
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[FFmpeg-user] Can ffpmeg output to stdout?

[Mike Brown]

I've tried using - for the output as well as nothing.  I set the audio codec
with -acodec, so that the correct codec will be used, but nada.

I'd like to be able to pipe the output into another program that I'll be using
to create a DTS file.

I'm beginning to think that it can't be done.

MB
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