[mythtv-users] Alternatives to lossless transcode

[Paul Gardiner]

On 12/11/2013 09:31, mark wrote:
> On 11/11/13 21:16, Paul Gardiner wrote:
>> On 11/11/2013 05:38, mark wrote:
>>> On 06/11/13 20:04, Paul Gardiner wrote:
>>>> mark <perkins1724 at hotmail.com> wrote:
>>>>> hate to say it but I've had a failure now (lossless mythtranscode to
>>>>> remove commercials then post-process with Handbrake).
>>>> I'm not suggesting that lossless transcode shouldn't be fixed, but
>>>> since you are post processing with handbrake your purpose in using it
>>>> is to avoid two lossy steps, so why not just do it in one step by
>>>> using mythtranscode in --fifodir mode, running the result into ffmpeg.
>>>> I've been getting perfect results that way for some time now. I
>>>> attached a script to the mythtranscode wiki page.
>>>> _______________________________________________
>>> Thanks Paul, but I am keen to remove the commercials as well. Partly
>>> because of storage constraints but partly to not have to skip them
>>> whenever I watch things again later. My reading of the wiki was that
>>> --fifodir does not remove the commercials and just outputs the raw
>>> streams.
>>
>> There's a --honorcutlist option (which my script uses). That will remove
>> the commercials... well I guess you need to go into the cutlist editor
>> and tell it to apply the commercial flagging as a cutlist, but I thought
>> you had to do that with lossless transcode too. There's also a
>> --cleancut option that improves cutting by doing the last 200ish frames
>> of each cut by skipping rather than trying to jump to the exact end.
>>
>> Cheers,
>>      Paul.
>
> Thanks Paul, I must have mis-read the wiki as I thought --fifodir only
> output the raw streams hence would ignore things like --honorcutlist.
> I've tried to run it to see what it does but it keeps just hanging at
> the first cutpoint no error message or anything it just sits there like
> something is happening but nothing ever does (at least not in the few
> hours I let it sit). I tried again --verbose all and couldn't see
> anything of note, it just seems to stop. I guess whatever is in the
> recording that is causing problems with --mpeg2 is also causing problems
> with --fifodir.

Do you mean running my script or just running mythtranscode?
Mythtranscode --fifodir run alone will stall eventually because the
fifos will fill up. It will also stall if something reads from them
unevenly. But, assuming you are running the script, you could easily
be correct that whatever upsets --mpeg2 is also upsetting --fifodir.

Cheers,
	Paul.