[mythtv-users] FFMpeg optimal settings for 1080i

Joseph DeGraw coffee412 at comcast.net
Mon Jan 27 12:19:04 UTC 2014


On 01/27/2014 05:54 AM, John Pilkington wrote:
> On 27/01/14 08:20, John Finlay wrote:
>> On 1/26/2014 10:51 PM, faginbagin wrote:
>>> On 1/25/2014 6:14 PM, Joseph DeGraw wrote:
>>>> On 01/25/2014 05:34 PM, Joseph DeGraw wrote:
>>>>> I have been working on an issue with HDtv 1080i recordings being
>>>>> burned
>>>>> to DVD for playback. It seems with the default settings for
>>>>> mytharchive
>>>>> (mythtv .27-fixes, Mythbuntu 12.04) it takes a abnormal amount of
>>>>> time
>>>>> to burn a dvd. After alot of reading I came across a thread at the
>>>>> ffmpeg forums that was very helpful and also listed a command line
>>>>> for
>>>>> getting the job done alot faster. Infact, It took me about 20 -30
>>>>> minutes or less to get a 1920x1080 movie recording onto a dvd with
>>>>> good
>>>>> quality. Below is the command line that I used.
>>>>>
>>>>> ffmpeg -i "Fatal Honeymoon.mpg" -filter:v
>>>>> "scale='if(gt(a,720/480),720,-1)':'if(gt(a,720/480),-1,480)',pad=w=720:h=480:x=(ow-iw)/2:y=(oh-ih)/2"
>>>>>
>>>>>
>>>>> -target ntsc-dvd FatalHoneymoon.mpg
>>>>>
>
> That looks like a 'Hey, Mom, look at me' command line.  What happens
> if you use
>
> ffmpeg -i "Fatal Honeymoon.mpg" -target ntsc-dvd FatalHoneymoon.mpg
>
> or the same but with mythffmpeg?
>
> Does it produce a growing output file?  Is the result off centre, too
> wide, too high?   A quick test on the first minute or two would give
> the answer.  And I would still like to know the result of
>
> ffmpeg -i  "Fatal Honeymoon.mpg"
>
> Cheers,
>
> John P
>
> _______________________________________________
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>

Sorry about the delay.


coffee at mythtv2013:~/Videos$ mythffmpeg -i "Fatal Honeymoon.mpg"
ffmpeg version 1.2.2 Copyright (c) 2000-2013 the FFmpeg developers
  built on Nov 20 2013 01:49:00 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  configuration: --compile-type=profile --prefix=/usr --runprefix=/usr
--disable-mythlogserver --enable-crystalhd --enable-lirc
--enable-audio-alsa --enable-audio-oss --enable-dvb --enable-ivtv
--enable-firewire --enable-joystick-menu --with-bindings=perl
--enable-ffmpeg-pthreads --enable-pic
--perl-config-opts='INSTALLDIRS=vendor' --enable-libvpx --enable-sdl
--enable-libmp3lame --enable-libx264 --enable-opengl-video
--enable-vaapi --enable-vdpau
  libavutil      52. 18.100 / 52. 18.100
  libavcodec     54. 92.100 / 54. 92.100
  libavformat    54. 63.104 / 54. 63.104
  libavdevice    54.  3.103 / 54.  3.103
  libavfilter     3. 42.103 /  3. 42.103
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
[mpegts @ 0x22a8a20] PES packet size mismatch
Input #0, mpegts, from 'Fatal Honeymoon.mpg':
  Duration: 00:39:30.56, start: 11713.117711, bitrate: 13362 kb/s
    Stream #0:0[0x800]: Video: mpeg2video (Main), yuv420p, 1920x1080
[SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Stream #0:1[0x801](eng): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
    Stream #0:2[0x802](spa): Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s
At least one output file must be specified



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