Your message dated Wed, 21 Sep 2016 13:41:44 +0200
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<CAK0Odpxb8mEm034gj88LhpwO0YamRW54=oOnkM-=85yhcxh...@mail.gmail.com>
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has caused the Debian Bug report #810224,
regarding /usr/bin/avconv: ogg format: unable to use pass and quality? options
together
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
810224: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=810224
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: libav-tools
Version: 6:11.4-1~deb8u1
Severity: normal
File: /usr/bin/avconv
Hallo,
First:
i'm not a regular user of avconv,
but didn't find any clear answers;
so ignore this report if u know better
Analog to
https://gist.github.com/zipizap/05dbfbb93b3486186287
i tried to compress video files the free open format ogv (theora + vorbis)
First when trying to convert in two steps:
"
avconv -i "$INPUT_FILE" -threads auto -c:v libtheora -pass 1 -an -f ogg -y
"$OUTPUT"
avconv -i "$INPUT_FILE" -threads auto -c:v libtheora -pass 2 -c:a libvorbis
-y "$OUTPUT"
"
this does not accept the -q:v 1 and -q:a 1 options (or -b:a -b:v options)
But:
"
avconv -i "$INPUT_FILE" -threads auto -c:v libtheora -q:v 1 -c:a libvorbis
-q:a 1 -y "$OUTPUT"
"
does
Further: looking at the process output cmdline:
"
Output #0, ogg, to 'out.ogv':
Metadata:
encoder : Lavf56.1.0
Stream #0.0: Video: libtheora, yuv420p, 1920x1080 [PAR 1:1 DAR 16:9],
q=2-31, 200 kb/s, 10.67 fps, 10.67 tbn, 10.67 tbc
"
does not show the asked quality (2-31 is shown instead)
Examining with exiftool:
the files with different q options differ in size and metadata,
as is to be expected
Conclusion:
the man page and doc files are not easy to use in this case or the
implementation is missing some features
I also noticed that this seems to be singletreaded (in contrast to the analog
code in gist,
which i also ran, and is multitreaded)
hth,
Wim
-- System Information:
Debian Release: 8.2
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=nl_BE.utf8, LC_CTYPE=nl_BE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages libav-tools depends on:
ii dpkg 1.17.26
ii libavcodec56 6:11.4-1~deb8u1
ii libavdevice55 6:11.4-1~deb8u1
ii libavfilter5 6:11.4-1~deb8u1
ii libavformat56 6:11.4-1~deb8u1
ii libavresample2 6:11.4-1~deb8u1
ii libavutil54 6:11.4-1~deb8u1
ii libc6 2.19-18+deb8u1
ii libsdl1.2debian 1.2.15-10+b1
ii libswscale3 6:11.4-1~deb8u1
ii libvdpau1 0.8-3+deb8u2
ii libx11-6 2:1.6.2-3
libav-tools recommends no packages.
Versions of packages libav-tools suggests:
ii frei0r-plugins 1.4-3
-- no debconf information
--- End Message ---
--- Begin Message ---
# invalid according to upstream dev:
# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=831591#81
notfound 810224 6:11.4-1~deb8u1
thanks
--- End Message ---
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