[haiku-bugs] Re: [Haiku] #9616: MediaConverter doesn't convert to OGG or MP3 and converts to WAV with video
- From: "ttcoder" <trac@xxxxxxxxxxxx>
- Date: Thu, 23 Oct 2014 12:29:41 -0000
#9616: MediaConverter doesn't convert to OGG or MP3 and converts to WAV with
video
------------------------------------+----------------------------
Reporter: Kev | Owner: nobody
Type: enhancement | Status: new
Priority: normal | Milestone: R1/alpha5
Component: Audio & Video/Codecs | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking: 10722
Has a Patch: 0 | Platform: All
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Comment (by ttcoder):
@waddlesplash With some luck you won't have to change anything in
packaging, and we won't have to investigate gcc4 :-b read on.. (BTW
before downloading a gcc4h nightly I looked [http://packages.haiku-
os.org/haikuports/master/repo/x86_gcc2/current/packages/ here] and
[http://packages.haiku-os.org/haikuports/master/repo/x86/current/packages/
here] but was surprised to see the same ffmpeg package listings as I
expected the x86 listing would be different from the x86_gcc2 one, tho the
list is not easy to make out for a neophyte so leaving that aside for now
:-)
@pulkomandy
Thanks for going star wars on me and unleashing the power of that fully-
operational (ffmpeg) battle station on my ass! I thought it didn't work...
And there I am, with an evening and morning spent doing double-blind tests
and the such and amazed at how good ffmpeg sounds *g*. Tried using
-q'''s'''cale and -q and I end up not being able to hear the different
between the original .wav and the encoded ogg/vorbis even going as low as
`-q 0` (which encodes to ca. 64 kbps according to MediaPlayer > File Info
menu). This laptop has cheapo speakers and I'm not an audiophile but
still, I know I've never seen that kind of performance in years of using
lame... That one requires 128 kbps or more..
So still todo..
- in my testing the last 6 seconds of original audio are indeed missing in
the encoded vorbis audio, as you had originally mentionned.
And..
- have to look for what's breaking ffmpeg libs in 'libvorbis' mode when
used by MediaConverter, or used in TT software (TimeTracker, TunePrepper
..etc);
MediaConverter outputs this to stderr/out:
{{{
[libvorbis @ 0x187b84d0] libvorbis: buffer overflow.
Error writing audio frames: General system error
}}}
by opposed to using ffmpeg command-line, which works freakin' awesome:
{{{
ffmpeg -i test.wav -acodec libvorbis -q 0 test.ogg
}}}
(Not sure if that matters, but DiskProbe and /bin/cmp show that the 4KB
(aborted) output from MediaConverter has some difference with the
corresponding chunk in command-line ffmpeg's (correct) output: they both
start off with '0ggS', 0x200 ..etc but there are some difference starting
at offset 0xe. And starting at offset 0x65 there's even a "shift": the
correct ogg file contains the string "vorbis" @ 0x67 whereas the incorrect
one has it @ 0x68).
--
Ticket URL: <https://dev.haiku-os.org/ticket/9616#comment:16>
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