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Lousy transcoding with Panasonic Viera GT30

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rkman

Serviio newbie

Posts: 2

Joined: Sat Mar 03, 2012 9:32 am

Post Sat Apr 21, 2012 6:08 pm

Lousy transcoding with Panasonic Viera GT30

My MPEG transcoding has really bad ghosting. It happens for all transcoded files, whether SD or HD, regardless of formats and containers.

TV: Panasonic Viera TC-P55GT30
Serviio 0.6.2 on Windows 7 64-bit

Also, can someone tell me how to disable the MediaItemDAOImpl and other crap from filling up my debug log so I can find the actual problem? I'm guessing this has something to do with the ffmpeg command line parameters, because when I manually use ffmpeg to convert the file into something the TV can natively play, it's fine.
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profiles.xml
This is my tweaked profiles.xml
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zip

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Posts: 17215

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Post Sat Apr 21, 2012 6:23 pm

Re: Lousy transcoding with Panasonic Viera GT30

look here to filter out library logs: viewtopic.php?f=3&t=1796
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rkman

Serviio newbie

Posts: 2

Joined: Sat Mar 03, 2012 9:32 am

Post Sun Apr 22, 2012 8:56 pm

Re: Lousy transcoding with Panasonic Viera GT30

OK, so here is the ffmpeg transcode command from the log:

  Code:
2012-04-22 16:18:18,729 DEBUG [ProcessExecutor] Starting C:\Program Files\Serviio\bin\\..\lib/ffmpeg.exe -i movie.avi -y -threads 4 -async 1 -vcodec mpeg2video -sameq -r 30000/1001 -g 15 -copyts -acodec copy -map 0:0 -map 0:1 -sn -f mpegts C:\Windows\TEMP\Serviio\transcoding-temp-5444-MPEG2TS.stf


Here's ffmpeg -i output:

  Code:
ffmpeg version 0.9, Copyright (c) 2000-2011 the FFmpeg developers
  built on Dec 13 2011 20:46:11 with gcc 4.4.2
  configuration: --enable-static --disable-shared --disable-ffplay --disable-ffserver --enable-memalign-hack --enable-libmp3lame --enable-librtmp --extra-libs='-lrtmp -lpolarssl -lws2_32 -lwinmm' --arch=x86 --enable-runtime-cpudetect --enable-pthreads --target-os=mingw32 --cross-prefix=i686-mingw32- --pkg-config=pkg-config
  libavutil    51. 32. 0 / 51. 32. 0
  libavcodec   53. 42. 0 / 53. 42. 0
  libavformat  53. 24. 0 / 53. 24. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 53. 0 /  2. 53. 0
  libswscale    2.  1. 0 /  2.  1. 0

Seems stream 0 codec frame rate differs from container frame rate: 29.98 (65535/2186) -> 29.97 (30000/1001)
Input #0, avi, from 'movie.avi':
  Metadata:
    encoder         : VirtualDubMod 1.5.4.1 (build 2178/release)
    IAS1            : English
  Duration: 01:54:59.35, start: 0.000000, bitrate: 1702 kb/s
    Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 640x368 [SAR 1:1 DAR 40:23], 29.97 tbr, 29.97 tbn, 29.98 tbc
    Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, s16, 192 kb/s
At least one output file must be specified


This movie produces awful ghosting during the titles/credits and pretty bad ghosting (fuzzy edges, like you're seeing double) overall.

1. I can't find -sameq in the ffmpeg documentation, has it been deprecated?
2. What ffmpeg params do you suggest I tinker with or add?
3. Is there an easier way to customize the ffmpeg command without the PERL kludge posted in the forums?
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zip

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Post Thu Apr 26, 2012 4:57 pm

Re: Lousy transcoding with Panasonic Viera GT30

rkman wrote:1. I can't find -sameq in the ffmpeg documentation, has it been deprecated?

Interesting, looks like they removed it from there recently. Try to use -qscale 1 instead (should be the same as sameq)

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