Divx/xvid/ etc Conversion

[FNM]

It was me being stupid, I butchered it so much and re-copied it.. anyway long story was that I didn't have the dir. So now it's doing stuff but saying it can't find an AAC encoder. I'm guessing i'm missing that - is there a pack I should install?

output from cmd prompt:

C:\Users\Public\NPVR\Scripts>postprocessing.bat C:\Temp\ITV\ITV.ts

C:\Users\Public\NPVR\Scripts>REM Encode to mp4 changing file extension

C:\Users\Public\NPVR\Scripts>"C:\Users\Public\NPVR\Scripts\ffmpeg.exe" -y -i C:\
Temp\ITV\ITV.ts -f mp4 -vcodec mpeg4 -deinterlace -r 25 -aspect 16:9 -acodec aac
-qscale 6 -ar 48000 -async 489000 -ac 2 "C:\Temp\ITV\ITV".mp4
FFmpeg version SVN-r18639, Copyright © 2000-2009 Fabrice Bellard, et al.
configuration: --enable-memalign-hack --enable-postproc --enable-gpl --enable-
libfaac --enable-libfaad --enable-libgsm --enable-libmp3lame --enable-libvorbis
--enable-libtheora --enable-libx264 --enable-libxvid --disable-ffserver --enable
-avisynth --enable-pthreads
libavutil 50. 3. 0 / 50. 3. 0
libavcodec 52.27. 0 / 52.27. 0
libavformat 52.32. 0 / 52.32. 0
libavdevice 52. 2. 0 / 52. 2. 0
libswscale 0. 7. 1 / 0. 7. 1
libpostproc 51. 2. 0 / 51. 2. 0
built on Apr 21 2009 13:44:38, gcc: 4.2.4 (TDM-1 for MinGW)

Seems stream 0 codec frame rate differs from container frame rate: 50.00 (50/1)
-> 25.00 (25/1)
Input #0, mpegts, from 'C:\Temp\ITV\ITV.ts':
Duration: 00:32:51.79, start: 14351.318556, bitrate: 2971 kb/s
Program 8258
Stream #0.0[0x208]: Video: mpeg2video, yuv420p, 704x576 [PAR 16:11 DAR 16:9]
, 15000 kb/s, 25 tbr, 90k tbn, 50 tbc
Stream #0.1[0x209](eng): Audio: mp2, 48000 Hz, stereo, s16, 192 kb/s
Stream #0.2[0x20a](eng): Audio: mp2, 48000 Hz, mono, s16, 64 kb/s
Stream #0.3[0x20b](eng): Subtitle: dvbsub
Unknown encoder 'aac'

[mark_lt]

Different versions of ffmpeg use different terms for the codecs. I haven't managed to figure out if it is related to the version of ffmpeg or the codecs you have installed with it. Instead of aac, try libfaac. I have seen mention that aac was striped from some builds of ffmpeg but I haven't noticed it.

[FNM]

Nice one Mark! It worked.

So testing it via cmd prompt - it's whirring away. Is the next step to make a small recording and test the auto functionality? It should do it without running anything?

[mark_lt]

It should. Worth saying a bit about some of the settings I use. The -async 489000 bit I put in there as some of my DVB signals aren't great, which means that when you transcode the audio and video go out of sync. What the async does is makes everyone talk like chipmunks for a few seconds and brings it back into sync. If you don't have that issue, you can delete it, as it should speed up the transcode.

It is also worth fiddling around with the qscale. A higher number means a smaller file size (normally) but lower quality. I find anything below 10 is really poor, and normally between 5 and 7 works for me, personal preference really. And finally, if you have dual processor add the command -threads 2 which should speed up transcoding, but apparently at the cost of quality slightly, although I have never noticed a difference.

Endless tweaks but I am getting ahead of myself, let us know if it works, which it should. And also apologies for the issue with where FFmpeg was located earlier. I have committed a sin by sticking it in the scripts folder! Proper file management is something I never been very good at.

[FNM]

Thanks much! Will mess around - might even write the wiki for this if I get time!

[FNM]

me again!

The script is working fine in cmd prompt but no automation. Do I need to set npvr / task mgr to look for a default dir or something?

Thx!

[johnsonx42]

it can be a bit of a mystery what directory you'll be in when NPVR launches a batch file. your best bet is to start any batch with a "cd" command so you know where you're starting from. since it looks like you were testing from the scripts directory and it worked there, then "cd \users\public\npvr\scripts" should suffice.

if that doesn't do it, then are you sure you have your script in the right place? the nrecord.log shows where it's looking for the scripts, and whether it found yours; look for a message about postprocessing.bat when a recording ends.

[mark_lt]

As per Johnsonx42, and remember to change the input file name in the script back to %1. Let us know how you get on.

[FNM]

nrecord.log shows where it's looking for the scripts, and whether it found yours; look for a message about postprocessing.bat when a recording ends.

I have a feeling that'll let me know! Thanks again guys, will set some more recordings going and report back.

[FNM]

Had a look tonight and the nrecord is pointing to the correct dir which holds ffmpeg and postprocessing.bat

Oddly enough though there's a 'NO' in front of the script line - would that do it?

Also Mark - I dl'd one of the mp4's tonight and the voice sync was off by a second or so (original perfect). Should I mess with the async number or the qscale?

0.217 [DEBUG][7] DigitalRecorderDVBT::Tune@1
2011-01-23 21:00:00.217 [DEBUG][7] DigitalRecorderDVBT::Tune@2
2011-01-23 21:00:00.217 [DEBUG][7] DigitalRecorderDVBT::Tune@3
2011-01-23 21:00:00.430 [DEBUG][7] DigitalRecorderDVBT::Tune@4
2011-01-23 21:00:00.600 [DEBUG][7] DigitalRecorderDVBT::Tune@5
2011-01-23 21:00:00.600 [DEBUG][7] DigitalRecorderDVBT::Tune@6
2011-01-23 21:00:02.449 [DEBUG][7] DigitalRecorderDVBT::Tune@7
2011-01-23 21:00:02.449 [DEBUG][7] Calling LockChannel()
2011-01-23 21:00:02.623 [DEBUG][7] locked=1, present=1, strength=-8000, quality=80 (took 172ms to check)
2011-01-23 21:00:02.623 [DEBUG][7] DigitalRecorderDVBT::Tune@8
2011-01-23 21:00:02.755 [INFO][7] DigitalRecorder.StartStream() allocated handle: 0x8
2011-01-23 21:00:03.223 [DEBUG][7] Temp at 23/01/2011 21:00:13
2011-01-23 21:00:03.223 [DEBUG][7] Started recording (938:C:\Temp\Justice - Fairness and the Big Society Debate\Justice - Fairness and the Big Society Debate_20110123_21002200.ts)
2011-01-23 21:00:03.330 [DEBUG][7] No C:\Users\Public\NPVR\Scripts\ParallelProcessing.bat
2011-01-23 21:03:00.220 [DEBUG][7] Stopping recording (970). Past end time of recording.
2011-01-23 21:03:00.220 [INFO][7] DigitalRecorder.StopStream() handle: 7
2011-01-23 21:03:00.865 [DEBUG][7] No C:\Users\Public\NPVR\Scripts\PostProcessing.bat