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My mythburn logs show a audio codec mismatch ?<br>
The error info is confusing to the non-user.<br>
<br>
Ffmpeg seems to recognise the h.264 AVC file/stream & identifies
the LATM & AC3 audio.<br>
<br>
I guess identifying the type & then doing something are two
separate things.<br>
Have never used VLC.<br>
<br>
Have spent sometime trying (failing) to understand mpeg-4 LATM etc..<br>
Does the LATM container contain/mux the 2ch AAC & the multi- ch AC3
?<br>
Can the LATM container hold any audio format ?<br>
Is this the point of LATM ? to mux multiple alternative audio tracks ?<br>
<br>
Can there be multiple audio & video streams muxed in the main h.264
AVC stream ?<br>
<br>
If ffmpeg command line option was to use AC3 audio (TV3) could it be
able to transcode ?<br>
I guess the answer lies in the answer to the LATM question above.<br>
<br>
I noticed that a 'dev' on mplayer was suggesting dumping use of libfaad
(LATM patch) because (he stated) ffmpeg does LATM now.<br>
There were many corrections posted...<br>
<br>
With Norway, Denmark & parts of UK using LATM with DVB service this
support might come a bit sooner.<br>
<br>
Thanks.<br>
<br>
<br>
On 26/03/2010 10:29 a.m., Jonathan Hoskin wrote:
<blockquote
cite="mid:289da1ea1003251429q5c788a24s5b2993b9b7018628@mail.gmail.com"
type="cite">
<div class="gmail_quote">
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im">> Transcoding FreeviewHD from MythTV.<br>
><br>
> Should the ffmpeg in Ubuntu9.04 be able to transcode h.264 AVC
into<br>
> mpeg-2 ?<br>
</div>
</blockquote>
<div><br>
</div>
<div>[Insert rant about slow FFMpeg release cycles here]</div>
<div> </div>
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im">If you only want to transcode to mpeg2 then I think
the MythTV transcode</div>
utility should do the job for you.</blockquote>
<div><br>
</div>
<div>Nope. Mythtranscode doesn't support H.264 (not with autodetect
at least). Eg:</div>
<div><br>
</div>
<div><font class="Apple-style-span" face="'courier new', monospace">$
mythtranscode -e dvd -i recordings/2002_20100326081400.mpg -o
tmp/test.mpg</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace">2010-03-26
10:22:21.410 Using runtime prefix = /usr</font></div>
<div><span class="Apple-style-span"
style="font-family: 'courier new',monospace;">...</span></div>
<div><span class="Apple-style-span"
style="font-family: 'courier new',monospace;">2010-03-26 10:22:22.215
Transcode: Looking for autodetect profile: Autodetect from 720p</span></div>
<div><font class="Apple-style-span" face="'courier new', monospace">2010-03-26
10:22:22.233 Transcode: Couldn't find profile for : H.264</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace">2010-03-26
10:22:22.233 Transcoding aborted, no profile found.</font></div>
<div> </div>
<div>Have you tried clvc (CLI based VLC) to get what you want? That's
what I use for transcoding H.264 to other formats.</div>
<div><br>
</div>
<div>Jonathan</div>
<div><br>
</div>
</div>
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