<div class="gmail_quote">On Mon, Jun 6, 2011 at 2:36 PM, Neil Salstrom <span dir="ltr"><<a href="mailto:salstrom@gmail.com">salstrom@gmail.com</a>></span> wrote:<br><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">On Fri, Jun 3, 2011 at 10:47 PM, Neil Salstrom <<a href="mailto:salstrom@gmail.com">salstrom@gmail.com</a>> wrote:<br>
><br>
> I think you are correct. I may compile both ffmpeg and x264 myself.<br>
> I had some issues with the transcoding I did.<br>
><br>
> First, the transcode failed on a file that had two audio tracks.<br>
> Second, in the file that finished encoding had really distorted audio.<br>
> I'm wondering if a more recent ffmpeg / x264 has fixes for those<br>
> issues.<br>
><br>
<br>
</div>An update to this.<br>
<br>
Over the weekend I compiled ffmpeg and x264. The issue with distorted<br>
audio is gone but I'm still having issues with files with multiple<br>
audio tracks. Here is what happens when I try to use this script. It<br>
will make a zero byte file and insert that in to the database fine (so<br>
that portion of the script works) but ffmpeg chokes:<br>
<br>
mythtv@htpc:~$ ./<a href="http://x264_transcode_normal.pl" target="_blank">x264_transcode_normal.pl</a> -f 1102_20100626140000.mpg<br>
/multimedia/metadata/Banners/1102_20100626140000.mpg does not exist<br>
/multimedia/metadata/Coverart/1102_20100626140000.mpg does not exist<br>
<div class="im">sh: /usr/share/mythtv/metadata/Television/ttvdb.py: not found<br>
</div>/video/Primal_Grill_With_Steven_Raichlen_06.26.2010.mp4 seems unique<br>
ffmpeg version git-N-30535-g124a9ed, Copyright (c) 2000-2011 the<br>
FFmpeg developers<br>
built on Jun 4 2011 15:38:43 with gcc 4.4.5<br>
configuration: --enable-gpl --enable-version3 --enable-nonfree<br>
--enable-postproc --enable-libfaac --enable-libmp3lame<br>
<div class="im">--enable-libopencore-amrnb --enable-libopencore-amrwb<br>
</div>--enable-libtheora --enable-libvorbis --enable-libx264<br>
--enable-libxvid --enable-x11grab<br>
libavutil 51. 4. 0 / 51. 4. 0<br>
libavcodec 53. 6. 1 / 53. 6. 1<br>
libavformat 53. 2. 0 / 53. 2. 0<br>
libavdevice 53. 1. 0 / 53. 1. 0<br>
libavfilter 2. 12. 0 / 2. 12. 0<br>
libswscale 0. 14. 1 / 0. 14. 1<br>
<div class="im"> libpostproc 51. 2. 0 / 51. 2. 0<br>
</div>[mpegts @ 0x1a463e0] max_analyze_duration 5000000 reached at 5005000<br>
Input #0, mpegts, from '1102_20100626140000.mpg':<br>
Duration: 00:29:56.93, start: 75005.058000, bitrate: 3399 kb/s<br>
Program 1<br>
Stream #0.0[0x41]: Video: mpeg2video (Main), yuv420p, 704x480 [PAR<br>
10:11 DAR 4:3], 15000 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc<br>
Stream #0.1[0x44](eng): Audio: ac3, 48000 Hz, stereo, s16, 192 kb/s<br>
Stream #0.2[0x45](eng): Audio: ac3, 48000 Hz, mono, s16, 128 kb/s<br>
(visual impaired)<br>
Stream #0.3[0x46](spa): Audio: ac3, 48000 Hz, mono, s16, 128 kb/s<br>
Output #0, mp4, to 'Primal_Grill_With_Steven_Raichlen_06.26.2010.mp4':<br>
Stream #0.0: Video: libx264, yuv420p, 1280x720, q=10-51, 3300<br>
kb/s, 90k tbn, 29.97 tbc<br>
Stream #0.1: Audio: libfaac, 48000 Hz, 6 channels, s16, 160 kb/s<br>
Codec type mismatch for mapping #0.0 -> #0.1<br>
Old file size = 763665212<br>
New file size = 0<br>
# INSERT INTO recorded<br>
(profile,findid,programid,progstart,hostname,previouslyshown,duplicate,starttime,playgroup,editing,preserve,category,transcoded,stars,watched,description,progend,filesize,title,seriesid,recgroup,bookmarkupdate,timestretch,lastmodified,commflagged,storagegroup,autoexpire,endtime,originalairdate,deletepending,transcoder,chanid,basename,subtitle,recpriority,recordid,bookmark)<br>
VALUES ("Default","0","EP010441480032","2010\-06\-26\<br>
14\:00\:00","htpc","1","1","2010\-06\-26\<br>
14\:00\:01","Default","0","0","Cooking","0","0","0","Margherita\ and\<br>
bacon\ potato\ wood\ oven\ pizzas\;\ sweet\-and\-sour\ duck\;\<br>
bone\-in\ pork\ chops\;\ grilled\ cipollini\ onions\ on\<br>
skewers\.","2010\-06\-26\ 14\:30\:00","0","Primal\ Grill\ With\<br>
Steven\ Raichlen","EP01044148","Default","0000\-00\-00\<br>
00\:00\:00","1","2010\-06\-26\<br>
14\:30\:05","1","Default","1","2010\-06\-26\<br>
14\:30\:00","2010\-06\-05","0","0","1102","Primal_Grill_With_Steven_Raichlen_06\.26\.2010\.mp4","Italian\<br>
Fire","0","170","0");<br>
mythtv@htpc:~$<br>
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</div></div></blockquote></div><br><br>The script attempts to map the video stream and audio stream in cases of multiple audio streams being found. You have a stereo and mono source, and this is throwing the script off. I intended it to look for 5.1 vs stereo, not stereo vs mono.<br>
<br>Try looking here:<br><pre># ============================================================================<br># Get ffmpegs info<br>#<br><br>$audiostreamstereo = 0;<br>$audiostreamsurround = 0;<br>$command = "ffmpeg -i $dir/$file ";<br>
open(FF_info, "$command 2>&1 |");<br>while ( defined(my $line = <FF_info>) ) {<br> chomp($line);<br> if ( $line =~ /^\s*Stream.*#(\S\.\S).*:\sVideo.*\s(\S*)\stbr/ )<br> {<br> $framerate = $2;<br> $videostream = $1;<br>
next;<br> }<br> if ( $line =~ /^\s*Stream.*#(\S\.\S).*:\sAudio.*stereo/ )<br> {<br> $audiostreamstereo = $1;<br> next;<br> }<br> if ( $line =~ /^\s*Stream.*#(\S\.\S).*:\sAudio.*5.1/ )<br> {<br> $audiostreamsurround = $1;<br>
next;<br> }<br> <span style="color: rgb(255, 0, 0);">if ( $line =~ /^\s*Stream.*#(\S\.\S).*:\sAudio.*mono/ )</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);"> {</span><br style="color: rgb(255, 0, 0);">
<span style="color: rgb(255, 0, 0);"> $audiostreammono = $1;</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);"> next;</span><br style="color: rgb(255, 0, 0);"><span style="color: rgb(255, 0, 0);"> }</span><br>
}<br></pre>and <br><br><pre># ============================================================================<br># Third, do the transcode<br>#<br>$audiochannels = 6;<br>$audiostream = $audiostreamsurround;<br>if ( $audiostreamsurround eq "" )<br>
{<br> my $audiochannels = 2;<br> my $audiostream = $audiostreamstereo;<br>} </pre><br><br>Also, please provide invocation line for ffmpeg inside the script<br><pre>chdir $dir;<br><span style="color: rgb(255, 0, 0);">print "$command \n";</span><br>
system $command;<br><br>if ( ! -e "$dir/$newfilename" )<br>{ Die "Transcode failed\n" }<br><br></pre><br><br>