Bug#1026164: ffprobe: "-of json" doesn't report anything
On 12 Nov 2023 19:56:22 + Phil Wyett wrote: > Looking at the docs, you can use -of or -print_format like follows for a > nice json file. > > ffprobe -v quiet -of json -show_format -show_streams "Critical.ogg" > > "Critical.ogg.json" > > Your needs may require some changes. That gives a much nicer/better and much more valid result. Thanks! signature.asc Description: This is a digitally signed message part.
Bug#1026164: ffprobe: "-of json" doesn't report anything
On Sun, 12 Nov 2023 20:17:03 +0100 Diederik de Haas
wrote:
> On 15 Dec 2022 16:05:03 +0100 Matthias Urlichs wrote:
> > Package: ffmpeg
> > Version: 7:5.1.2-1
> >
> > $ ffprobe -of json ./01.ogg >/tmp/ff.stdout 2>/tmp/ff.stderr
> > $ cat /tmp/ff.stderr
> > [only header, but no json output]
> > $ cat /tmp/ff.stdout
> > {
> >
> > }
> >
> > I'm fairly sure that this is not the intended behavior.
> >
> > Upstream says that this works for them.
> > https://trac.ffmpeg.org/ticket/10104
>
> I can reproduce your findings, but ...
>
> $ ffprobe -hide_banner -of json Critical.ogg
> {
> Input #0, ogg, from 'Critical.ogg':
> Duration: 00:00:00.63, start: 0.00, bitrate: 129 kb/s
> Stream #0:0: Audio: vorbis, 48000 Hz, mono, fltp, 86 kb/s
>
> }
> $ ffprobe -hide_banner -of json Critical.ogg 2>/dev/null
> {
>
> }
>
> So it looks like `2>/dev/null` 'hides' the output.
> I don't know if without it, is valid json though.
> Using 'xml' as output_format gives an interesting result ...
Hi,
Looking at the docs, you can use -of or -print_format like follows for a nice
json file.
ffprobe -v quiet -of json -show_format -show_streams "Critical.ogg" >
"Critical.ogg.json"
Your needs may require some changes.
Regards
Phil
--
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Bug#1026164: ffprobe: "-of json" doesn't report anything
On 15 Dec 2022 16:05:03 +0100 Matthias Urlichs wrote:
> Package: ffmpeg
> Version: 7:5.1.2-1
>
> $ ffprobe -of json ./01.ogg >/tmp/ff.stdout 2>/tmp/ff.stderr
> $ cat /tmp/ff.stderr
> [only header, but no json output]
> $ cat /tmp/ff.stdout
> {
>
> }
>
> I'm fairly sure that this is not the intended behavior.
>
> Upstream says that this works for them.
> https://trac.ffmpeg.org/ticket/10104
I can reproduce your findings, but ...
$ ffprobe -hide_banner -of json Critical.ogg
{
Input #0, ogg, from 'Critical.ogg':
Duration: 00:00:00.63, start: 0.00, bitrate: 129 kb/s
Stream #0:0: Audio: vorbis, 48000 Hz, mono, fltp, 86 kb/s
}
$ ffprobe -hide_banner -of json Critical.ogg 2>/dev/null
{
}
So it looks like `2>/dev/null` 'hides' the output.
I don't know if without it, is valid json though.
Using 'xml' as output_format gives an interesting result ...
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Bug#1026164: ffprobe: "-of json" doesn't report anything
Package: ffmpeg
Version: 7:5.1.2-1
Severity: important
X-Debbugs-Cc: sm...@smurf.noris.de
$ ffprobe -of json ./01.ogg >/tmp/ff.stdout 2>/tmp/ff.stderr
$ cat /tmp/ff.stderr
ffprobe version 5.1.2-1 Copyright (c) 2007-2022 the FFmpeg developers
built with gcc 12 (Debian 12.2.0-3)
configuration: --prefix=/usr --extra-version=1 --toolchain=hardened
--libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu
--arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa
--enable-libaom --enable-libass --enable-libbluray --enable-libbs2b
--enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d
--enable-libflite --enable-libfontconfig --enable-libfreetype
--enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm
--enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg
--enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq
--enable-librist --enable-librubberband --enable-libshine --enable-libsnappy
--enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh
--enable-libsvtav1 --enable-libtheora --enable-libtwolame --enable-libvidstab
--enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265
--enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq
--enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl
--enable-opengl --enable-sdl2 --disable-sndio --enable-pocketsphinx
--enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm
--enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264
--enable-libplacebo --enable-librav1e --enable-shared
libavutil 57. 28.100 / 57. 28.100
libavcodec 59. 37.100 / 59. 37.100
libavformat59. 27.100 / 59. 27.100
libavdevice59. 7.100 / 59. 7.100
libavfilter 8. 44.100 / 8. 44.100
libswscale 6. 7.100 / 6. 7.100
libswresample 4. 7.100 / 4. 7.100
libpostproc56. 6.100 / 56. 6.100
Input #0, ogg, from './01.ogg':
Duration: 00:02:36.45, start: 0.00, bitrate: 141 kb/s
Stream #0:0: Audio: vorbis, 44100 Hz, stereo, fltp, 160 kb/s
$ cat /tmp/ff.stdout
{
}
I'm fairly sure that this is not the intended behavior.
Upstream says that this works for them.
https://trac.ffmpeg.org/ticket/10104
-- System Information:
Debian Release: bookworm/sid
APT prefers testing
APT policy: (700, 'testing'), (650, 'stable'), (600, 'oldstable'), (500,
'stable-security'), (500, 'unstable'), (450, 'focal'), (350, 'oldoldstable'),
(300, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386, arm64
Kernel: Linux 6.0.0-5-amd64 (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_USER
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages ffmpeg depends on:
ii libavcodec597:5.1.2-1
ii libavdevice59 7:5.1.2-1
ii libavfilter87:5.1.2-1
ii libavformat59 7:5.1.2-1
ii libavutil57 7:5.1.2-1
ii libc6 2.36-6
ii libpostproc56 7:5.1.2-1
ii libsdl2-2.0-0 2.24.2+dfsg-1
ii libswresample4 7:5.1.2-1
ii libswscale6 7:5.1.2-1
ffmpeg recommends no packages.
Versions of packages ffmpeg suggests:
pn ffmpeg-doc
-- debconf-show failed
