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<p class="MsoNormal">Hi Nicolas,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-GB">Thank you very much for your answer.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Ok I will check with FFMPEG and I’ll be ready when gstreamer will have this type of decoder.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Once more, thank you for your time.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Frederic<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="mso-ligatures:none;mso-fareast-language:FR">De :</span></b><span style="mso-ligatures:none;mso-fareast-language:FR"> Nicolas Dufresne <nicolas@ndufresne.ca>
<br>
<b>Envoyé :</b> mardi 22 août 2023 21:19<br>
<b>À :</b> Discussion of the development of and with GStreamer <gstreamer-devel@lists.freedesktop.org><br>
<b>Cc :</b> DUCHASSIN Frédéric <duchassin@sefram.com><br>
<b>Objet :</b> Re: gstreamer and AC-4 audio decoding support<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="mso-ligatures:none;mso-fareast-language:FR">Hi,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-ligatures:none;mso-fareast-language:FR"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="mso-ligatures:none;mso-fareast-language:FR">Le mardi 22 août 2023 à 10:34 +0000, DUCHASSIN Frédéric via gstreamer-devel a écrit :<o:p></o:p></span></p>
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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-GB">I try to gather information about support of dolby AC-4 audio decoding in gstreamer.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-GB">I didn’t really find information about the status of such a decoder for this type of audio stream.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-GB">Have you got information ? Is it available ?</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="mso-ligatures:none;mso-fareast-language:FR"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="mso-ligatures:none;mso-fareast-language:FR">We currently have mptsdemux and qtdemux (ISOMP4) support but no decoder yet. An AC-4 decoder has been merged into FFMPEG in June this year, and will be part of the next release. Meanwhile,
you could prepare the mapping in gstreamer/subprojects/gst-libav/ and send an MR so it ready on time for this FFMPEG release.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-ligatures:none;mso-fareast-language:FR"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="mso-ligatures:none;mso-fareast-language:FR">note: I don't know AC-4 well enough to tell you if we will need an bitstream parser or not.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-ligatures:none;mso-fareast-language:FR"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="mso-ligatures:none;mso-fareast-language:FR">regards,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-ligatures:none;mso-fareast-language:FR">Nicolas<o:p></o:p></span></p>
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