[mythtv-users] Crop in Transcode?
gmishkin at acs.bu.edu
Wed Apr 25 18:19:07 UTC 2007
I'm talking about transcode, not mythtranscode. You did say transcode
in your original message. :-)
You should be able to set up a user job that uses trancode, though. You
will still need mythtranscode alongside for nuv recordings, though, and
to cut out commercials. transcode won't do this on its own. You should
look into nuvexport first and see if it does what you want. It's very
easy to use and has a long wiki page.
--Geoff Mishkin <gmishkin at bu.edu>
Robert Current wrote:
> Hmm, now I'm wishing I knew the transcode options a bit better, and my
> scripting was a bit better. I'd like to have a User Job for this.
> mythtranscode --help isn't detailed, and ...
> mythtv at mythtvbox:~$ man mythtranscode
> No manual entry for mythtranscode
> Is there documentation somewhere? The Wiki is about the same as
> --help, it doesn't even mention --export_asr or --export_prof
> I'd really like to set up a User Job where it:
> 1) stats the file to be sure it's an actual OTA HD 16:9 file
> (since "Simpsons" comes off cable and OTA, only want to do the right
> 2) if it's OTA HD, transcode it to 3:4 (cropped) NTSC SD
> (going from 1920x1080/1280x720 to 720x480 save a TON of space and make
> playback easier)
> Should be similar to the "Removing Commercials" in the WiKi?
> On 4/25/07, Geoff Mishkin <gmishkin at acs.bu.edu> wrote:
>> You can use the -j option to do this. The format is -j
>> top,left,bottom,right. I've found for my 480x480 recordings that -j
>> 58,4,54,0 works well.
>> An option if you want to export to DVD is use --export_prof dvd-ntsc in
>> conjunction with --export_asr 3 which is 16:9 and it'll automatically
>> crop the top and bottom without having to use the -j option.
>> --Geoff Mishkin <gmishkin at bu.edu>
>> Robert Current wrote:
>> > I'm guessing the answer is no, but...
>> > Is there anyway to do a crop in transcode?
>> > Some shows I watch are always letterboxed on SD signal. Law & Order on
>> > USA, Rescue Me on F/X, A Haunting on Discovery Channel. It would be
>> > nice to just throw out the upper and lower black sections in a
>> > transcode.
>> > Some shows I watch are HD broadcasts of SD shows My local KMSB plays
>> > old Simpsons and Frasier SD shows as full HD broadcast with black bars
>> > on the left and right. It would be nice to just throw out the left
>> > and right black sections in a transcode.
>> > This would probably save me a lot of disk space, and probably lighten
>> > up the load on the system during playback of non-HD recordings of OTA
>> > HD broadcast.
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