[mythtv-users] Suggest transcode settings

Henk D. Schoneveld belcampo at zonnet.nl
Thu Feb 13 15:57:11 UTC 2014


On 13 Feb 2014, at 14:54, Phil Wild <phil at holobyte.com.au> wrote:

> On 13 February 2014 19:20, John Pilkington <J.Pilk at tesco.net> wrote:
>> 
>> On 13/02/14 10:44, Henk D. Schoneveld wrote:
>>> 
>>> 
>>> On 13 Feb 2014, at 10:24, Phil Wild <phil at holobyte.com.au> wrote:
>>> 
>>>> 
>>>> has to read:
>>>> ffmpeg -i your.mov -vf yadif -c:a libfaac -ab 128k -c:v libx264 -g 50 -crf 22 -s 896x720 your_small_crf22.mp4
>>>> 
>>>> 
>>>> Thanks =)
>>>> 
>>>> I'll give this a go as a starting point tonight. My preference is to remove the interlacing. Interlaced video is fine on the TV but we also tend to use Plex to output to iPads/Android.
>>> 
>>> If your distributions ffmpeg doesn't use libfaac, it could be libvo_aacenc or some other aac encoder. Replacing -c:a libfaac with -c:a copy will keep the original sound, or -an disables the sound which for video-quality testing purposes could be enough to start with.
>>>> 
>>>> 
>>>> Phil
>> 
>> 
>> Looks good, thanks, Henk.  And this, while obvious, might save a little googling:
>> 
>> https://trac.ffmpeg.org/wiki/x264EncodingGuide
>> 
>> John P
>> 
> 
> What version of ffmpeg should I be using?
> 
> This is what I have installed and none of the aac encoders mentioned work.
> 
> $ ffmpeg -version
> ffmpeg version 0.8.10-4:0.8.10-0ubuntu0.12.04.1, Copyright (c)
> 2000-2013 the Libav developers
>  built on Feb  6 2014 20:56:59 with gcc 4.6.3
> *** THIS PROGRAM IS DEPRECATED ***
> This program is only provided for compatibility and will be removed in
> a future release. Please use avconv instead.
> ffmpeg 0.8.10-4:0.8.10-0ubuntu0.12.04.1
> libavutil    51. 22. 2 / 51. 22. 2
> libavcodec   53. 35. 0 / 53. 35. 0
> libavformat  53. 21. 1 / 53. 21. 1
> libavdevice  53.  2. 0 / 53.  2. 0
> libavfilter   2. 15. 0 /  2. 15. 0
> libswscale    2.  1. 0 /  2.  1. 0
> libpostproc  52.  0. 0 / 52.  0. 0
> _______________________________
It’s rather old but will probably give you a good idea what you can achieve. 
Don’t upgrade to avconv, it’s broken.
Download from http://ffmpeg.org/download.html a static build or build from git sources, same page, but you’ll have to install a lot of dev packages as well before you can compile one yourself.
> ________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://www.mythtv.org/mailman/listinfo/mythtv-users
> http://wiki.mythtv.org/Mailing_List_etiquette
> MythTV Forums: https://forum.mythtv.org



More information about the mythtv-users mailing list