[mythtv-users] My ffmpeg nuvexport module so far

[Jonathan Markevich]

Michael J. Lynch wrote:

> So...is this the hack that makes nuvexport run fast?  I'm a noob, so 
> if that's what
> this is, what do I do with it?  Just copy it to where the other 
> "xxxx.pl" export
> scripts are?  Is there anything else that needs to be done, like 
> modifying the
> nuvexport script?  Sorry about the obviously basic questions but I 
> want to
> export recordings at a decent rate and have about 10 minutes worth of 
> experience
> with perl and/or nuvexport.


Well, strictly speaking, it was a hack when I told you how to change the 
files yourself.  This is a "code submission" ;)

Seriously, this should be placed in /usr/local/share/nuvexport/export 
with the other .pm modules that are in the latest (Nov 2) nuvexport.  
Then you have to tweak nuvexport to see it... something like:

joe `which nuvexport`

Page down to line 34.  Towards the end copy a set of those lines and 
adjust them, you will be adding the following lines:

    use export::MPG;
        push @Exporters, export::MPG->new;

Then Ctrl-KX and try it out.  Again, the size is a red herring,  it 
shouldn't matter what you type in.

If you don't have the latest ffmpeg the first transcoding step will take 
something like 10 seconds (meaning it failed), and say 0 of 0 frames.  
If all went well you should see some sweet better-than-realtime encoding.

>
> Jonathan Markevich wrote:
>
>> Here (finally) is my module that I have been using with the most 
>> success for exporting MPEG1.  Notice that I declare a bunch of KVCD 
>> parameters in here, but am not using them right now.  When I try to 
>> change the frame rate it becomes really jerky, though the matrix does 
>> make for some better compression.
>>
>> I haven't figured out resizing either.  It always works quite slowly 
>> and comes out as a green screen with some kind of tearing to it.  I 
>> left out the reference to the size in the ffmpeg call.  It just does 
>> a straight, non-resized copy.
>>
>> You need the latest version of ffmpeg for this, otherwise the -aspect 
>> option will fail.
>>
>> Comments?  Improvements?
>>
>> Have fun!
>>