<div dir="ltr">Hi,<div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Feb 13, 2014 at 5:24 PM, <span class="" style>Thiago</span> Santos <span dir="ltr"><<a href="mailto:thiago.sousa.santos@collabora.com" target="_blank"><span class="" style>thiago</span>.<span class="" style>sousa</span>.<span class="" style>santos</span>@<span class="" style>collabora</span>.com</a>></span> wrote:<br>
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<div>On 02/13/2014 02:16 PM, Tiago Katcipis
wrote:<br>
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<div>Hi,<br>
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Oi,<br>
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I don't know if this is a problem or if I'm missing
something. All I'm trying to do is to <span>transcode</span> audio, from any
format (thanks to <span>decodebin</span>
:-) to <span>OGG</span>/<span>Vorbis</span>. Just doing this
for an entire file is pretty straightforward and the
example code I'm providing already does that.<br>
<br>
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But when i try to extend it to seek to a specific
position of the audio, and then <span>transcoding</span>, then i get some
problems.<br>
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When i perform a non-flushing seek... the seek call
hangs forever. If i perform a flushing seek everything
goes "<span>ok</span>", but i end up
with a messed up <span>OGG</span>
file :-(.<br>
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</div>
When i <span>transcode</span> the
entire file:<br>
<br>
./<span>ogg</span>-seek-test <audio-<span>src</span>-file><br>
file /<span>tmp</span>/test.<span>ogg</span><br>
/<span>tmp</span>/test.<span>ogg</span>: <span>Ogg</span>
data, <span>Vorbis</span> audio, mono,
8000 Hz, ~22400 bps, created by: <span>Xiph</span>.Org
<span>libVorbis</span> I<br>
<br>
play /<span>tmp</span>/test.<span>ogg</span><br>
/<span>tmp</span>/test.<span>ogg</span>:<br>
File Size: 369k Bit Rate: 23.4k<br>
Encoding: <span>Vorbis</span>
<br>
Channels: 1 @ 16-bit <br>
<span>Samplerate</span>: 8000Hz <br>
<span>Replaygain</span>: off <br>
Duration: 00:02:06.14<br>
<br>
When i try to seek, to <span>transcode</span>
only a part of the file:<br>
<br>
./<span>ogg</span>-seek-test <audio-<span>src</span>> 10<br>
<br>
file /<span>tmp</span>/test.<span>ogg</span><br>
/<span>tmp</span>/test.<span>ogg</span>: <span>Ogg</span>
data<br>
<br>
play /<span>tmp</span>/test.<span>ogg</span><br>
play FAIL formats: can't open input file `/<span>tmp</span>/test.ogg': Input not an <span>Ogg</span> <span>Vorbis</span>
audio stream<br>
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The source code is here:<br>
<a>https://</a><span>gitorious</span>.org/<span>katcipis</span>-playground/playground/source/dfa5c8849e73ba15d15ea9dc11c1913d2685f5e0:c/<span>gstreamer</span>/<span>oggmux</span>-seek-test/<span>ogg</span>-seek-test.c<br>
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Any help is deeply appreciated.<br>
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There was a bug in oggmux regarding proper flushing when handling a
seek.<br>
<br>
Just got fixed with commit a6890ec7ef69f34b38ae2c600f136b43574102e7
in gst-plugins-base git master.<br></div></blockquote><div><br></div><div>That is good news :-)</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
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<br>
Please report if it still doesn't work for you.<br></div></blockquote><div><br></div><div>Ill check it out, sorry i didn't looked on the bug list, i really thought i was making some mistake :-). But i have another question, since we are talking about <span class="" style>OGG</span>/<span class="" style>Vorbis</span>.</div>
<div><br></div><div>I really need to use <span class="" style>CBR</span> on <span class="" style>vorbisenc</span>, but it don't matter how much i set it to be on a fixed <span class="" style>bitrate</span> the <span class="" style>bitrate</span> is still variable. If i run "file" on the <span class="" style>ogg</span> file it does says it has the right <span class="" style>bitrate</span>, but when i play it with "play" it have another <span class="" style>bitrate</span> (always a little higher than the one configured). Calculating the size manually also indicates the <span class="" style>bitrate</span> informed by play, so it seems that it is not respecting the configured <span class="" style>bitrate</span>.</div>
<div><br></div><div>For example i run:</div><div><br></div><div><span class="" style>gst</span>-launch-1.0 <span class="" style>pulsesrc</span> ! <span class="" style>audioconvert</span> ! <span class="" style>audioresample</span> ! audio/x-raw,rate=8000,channels=1 ! <span class="" style>vorbisenc</span> managed=true min-<span class="" style>bitrate</span>=28000 <span class="" style>bitrate</span>=28000 max-<span class="" style>bitrate</span>=28000 ! <span class="" style>oggmux</span> ! <span class="" style>filesink</span> location=/<span class="" style>tmp</span>/test.<span class="" style>ogg</span><br>
</div><div><br></div><div>I get:</div><div><br></div><div><div>file /<span class="" style>tmp</span>/test.<span class="" style>ogg</span></div><div>/<span class="" style>tmp</span>/test.<span class="" style>ogg</span>: <span class="" style>Ogg</span> data, <span class="" style>Vorbis</span> audio, mono, 8000 Hz, <28000 ~28000 >28000 bps, created by: <span class="" style>Xiph</span>.Org <span class="" style>libVorbis</span> I</div>
</div><div><br></div><div>Its <span class="" style>ok</span>, but on play:</div><div><div>play /<span class="" style>tmp</span>/test.<span class="" style>ogg</span></div><div>/<span class="" style>tmp</span>/test.<span class="" style>ogg</span>:</div>
<div> File Size: 13.6k Bit Rate: 35.9k</div></div><div><br></div><div>It seems that the bitrate cant be fixed, but i read that vorbis does support CBR.</div><div><br></div><div>Thanks for the help,</div><div>Tiago Katcipis</div>
<div><br></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000">
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--<br>
Cheers,<br>
Thiago<br>
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Best regards,<br>
<span>Tiago</span> <span>Katcipis</span><br>
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