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<div class="moz-cite-prefix">On 8/28/16 9:56 AM, salsaman wrote:<br>
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cite="mid:CAA74=eXs_c6NrzwXx3V8ecg3ungXeCeyXRJ8_ZzbkHhVgCzHmw@mail.gmail.com"
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<div class="gmail_quote">On Sun, Aug 28, 2016 at 1:55 PM,
Christopher Snowhill <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:kode54@gmail.com"
target="_blank">kode54@gmail.com</a>></span> wrote:<br>
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<div>On 8/28/16 12:50 AM, Paul B Mahol wrote:<br>
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<div dir="ltr">Hi,<br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Sun, Aug 28, 2016
at 7:16 AM, Christopher Snowhill <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:kode54@gmail.com"
target="_blank">kode54@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">I've
noticed that when using these libraries in
my own projects, at<br>
least in VGMStream, and with the WMA Pro
codec, it is necessary to<br>
perform my own pre-roll when seeking for
looping, or else the codec<br>
ramps the audio in from silence on every
loop as it catches back up to a<br>
valid state. I currently use either two
seconds, or the beginning of the<br>
file if it's less than two seconds prior
to the intended seek point,<br>
then discard sample data that is returned
by the decoder.<br>
<br>
Is this always necessary by design? Or am
I misusing the seeking API?<br>
<br>
I currently use:<br>
<br>
int64_t ts = target_sample *
formatCtx->duration / total_samples;<br>
avformat_seek_file(formatCtx, -1, ts -
1000, ts, ts, AVSEEK_FLAG_ANY);<br>
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<div>Do you call avcodec_flush_buffers()? <br>
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Yes, I do. Immediately after avformat_seek_file.<span
class=""><br>
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Does it make a difference if you use AV_SEEK_FLAG_BACKWARDS ?
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No.
<blockquote cite="mid:CAA74=eXs_c6NrzwXx3V8ecg3ungXeCeyXRJ8_ZzbkHhVgCzHmw@mail.gmail.com" type="cite"><div dir="ltr"><div class="gmail_extra"><div dir="ltr">
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<a moz-do-not-send="true" href="http://lives-video.com" target="_blank">http://lives-video.com</a>
<a moz-do-not-send="true" href="https://www.openhub.net/accounts/salsaman" target="_blank">https://www.openhub.net/accounts/salsaman</a>
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