Bug#1032972: handbrake: debian version of handbrake does NOT handle subtitles correctly
Package: handbrake
Version: 1.6.1+ds1-1
Severity: important
Dear Maintainer,
===================================================================================================
* What led up to the situation?
Tried to convert 2 different DVDs, both NTSC, into m4v (or mp4)
including subtitles.
In both cases, using many different options for handbrake (H264,
H265, different audio encoders, etc), was easily able add subtitles
(as well as burn-in). HOWEVER: the subtitles NEVER worked correctly:
- there are places where characters speak and no subtitles appear at
all
- also places where characters speak at length and a subtitle pops
up for only a second
- parts where there is lenghty narration, but no character speaks, and no
subtitle appears ever
NOTE: in both DVDs, playing the DVD directly results in subtitles
working perfectly. The DVDs have subtitles working but the debian
package of handbrake does not work.
* What exactly did you do (or not do) that was effective (or ineffective)?
I contacted handbrake.fr and they recommended using their nightly
snapshot as they claim debian is using a version of ffmpeg that
breaks subtitles.
Entire thread is at: https://forum.handbrake.fr/viewtopic.php?p=202972#p202972
Using the nightly snapshot from handbrake.fr worked perfectly and
produced an m4v file with subtitles that match exactly the
characters.
* What outcome did you expect instead?
I expected the debian packaged handbrake to work exactly as the one
from the upstream source but it does not. Failure to generate all
subtitles and insert them at the correct spot in the video is a major
failure that makes this packaged version of handbrake unusable for
videos with subtitles.
I recommend adding a test case of ripping a DVD with subtitles AND
verifying that the subtitles really match the speech.
===================================================================================================
-- System Information:
Debian Release: bookworm/sid
APT prefers testing-security
APT policy: (500, 'testing-security'), (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 6.1.0-1-amd64 (SMP w/6 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_FIRMWARE_WORKAROUND, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to C.UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages handbrake depends on:
ii libass9 1:0.17.0-2
ii libavcodec-extra59 [libavcodec59] 7:5.1.2-3
ii libavfilter-extra8 [libavfilter8] 7:5.1.2-3
ii libavformat59 7:5.1.2-3
ii libavutil57 7:5.1.2-3
ii libbluray2 1:1.3.4-1
ii libc6 2.36-8
ii libcairo2 1.16.0-7
ii libdvdnav4 6.1.1-1
ii libdvdread8 6.1.3-1
ii libgdk-pixbuf-2.0-0 2.42.10+dfsg-1+b1
ii libglib2.0-0 2.74.5-1
ii libgstreamer-plugins-base1.0-0 1.22.0-3
ii libgstreamer1.0-0 1.22.0-2
ii libgtk-3-0 3.24.36-4
ii libgudev-1.0-0 237-2
ii libjansson4 2.14-2
ii libpango-1.0-0 1.50.12+ds-1
ii libswresample4 7:5.1.2-3
ii libswscale6 7:5.1.2-3
ii libtheora0 1.1.1+dfsg.1-16.1
ii libturbojpeg0 1:2.1.5-2
ii libva-drm2 2.17.0-1
ii libva2 2.17.0-1
ii libvorbis0a 1.3.7-1
ii libvorbisenc2 1.3.7-1
ii libvpl2 2023.1.1-1
ii libx264-164 2:0.164.3095+gitbaee400-2+b1
ii libx265-199 3.5-2+b1
ii libxml2 2.9.14+dfsg-1.1+b3
Versions of packages handbrake recommends:
ii gstreamer1.0-alsa 1.22.0-3
ii gstreamer1.0-libav 1.22.0-2
ii gstreamer1.0-pulseaudio 1.22.0-4
ii gstreamer1.0-x 1.22.0-3
handbrake suggests no packages.
-- no debconf information
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