[mythtv-users] Transcoding with and without cutlist

[Michael T. Dean]

On 08/31/2012 09:42 AM, Stephen Robertson wrote:
> On Fri, Aug 31, 2012 at 2:15 PM, Michael T. Dean wrote:
>> On 08/30/2012 04:59 PM, Stephen Robertson wrote:
>>> I was experimenting with cutlists and transcoding for the first time
>>> to remove some excess from the beginning and end of some recordings
>>> however adding the cutlist seems to cause a problem.  Below are two
>>> logs for a transcode job on the same recording with and without
>>> cutlist.
>>>
>>> Any suggestions?
>>
>> Perhaps a description of what you mean by "a problem" so that we don't have
>> to guess based on your log output/know what we're looking for?
>>
>> Mike
> Sorry that wasn't very clear.  Though saying that I'm not sure what
> the problem is other than when I run transcode on the recording I have
> edited the log has an entry saying transcoding failed.
>
> Aug 30 21:53:32 bressay mythlogserver: mythtranscode[23758]: E
> CoreContext mpeg2fix.cpp:1178 (BuildFrame) avcodec_encode_video failed
> (0)
> Aug 30 21:53:32 bressay mythlogserver: mythtranscode[23758]: E
> CoreContext main.cpp:692 (main) Transcoding
> /media/disk/Recordings/1033_20120819061000.mpg failed

Is this a lossy transcode (i.e. transcoding to MPEG-4 in NuppelVideo 
container) rather than a lossless (MPEG-2 to MPEG-2) transcode?  I think 
there was recently a bug fixed on the lossy encoder that caused failures 
with some videos.  (And, FWIW, I suggest you only do lossless transcodes 
with mythtranscode.)

Mike