[mythtv-users] Preview image is only 1 pixel

[John Finlay]

Michael T. Dean wrote:
> On 01/13/2009 09:53 PM, Michael T. Dean wrote:
>   
>> On 01/13/2009 09:28 PM, John Finlay wrote:
>>   
>>     
>>> Michael T. Dean wrote:
>>>     
>>>       
>>>> On 01/13/2009 08:41 PM, John Finlay wrote:
>>>>       
>>>>         
>>>>> I'm having trouble getting good PNG preview images for NTSC recordings. 
>>>>> The preview PNG images that I get for ATSC recordings are good but the 
>>>>> NTSC previews are on 1 pixel in size.
>>>>>         
>>>>>           
>>>> Are you using a frame grabber/software encoder?  Are the affected 
>>>> recordings NUV's (versus MPEG files)?
>>>>       
>>>>         
>>> Yes I'm using a pchdtv hd-5500 which uses a software encoder for ntsc. 
>>> The ntsc recordings are stored as NUV files.
>>>     
>>>       
>> There was (is?) a bug that causes previews from NUV files (at least 
>> those created when recording--don't know if it affects NUV files created 
>> from transcoding) to be solid color/a single pixel from the upper left 
>> corner of the screen.  I can't remember any search terms right now, so I 
>> haven't found the discussion (which, IIRC, included a picture of MythWeb 
>> showing the solid-color previews) about it.
>>     
>
> Heh...  Turns out that "preview" and "MythWeb" were the search terms I 
> needed.  Here are all the threads, but the disappointing thing is that 
> there was no resolution: 
> http://www.gossamer-threads.com/lists/engine?list=mythtv&do=search_results&search_forum=all&search_string=Preview+Images+all+blank+in+MythTV+v0.21+&search_type=AND&search_fields=sb&search_time=&search_user_username=&sb=score&mh=25
>
> Mike
>   
I found a thread in the ubuntu forums that discusses the same problem I 
have - unusable 1x1 pixel preview image created for RTjpeg NUV files but 
usaable preview image after transcoding to MPEG4 NUV file.

http://ubuntuforums.org/archive/index.php/t-954500.html

John