[MEncoder-users] Is it possible to rewrite the SCR in the pack headers?

[Duncan Webb]

Nico Sabbi wrote:
> Duncan Webb wrote:
> 
>> Hi all,
>>
>> Is it possible to rewrite just the SCR in the pack headers for an mpeg-2
>> file?
>>
>> After recording a TV programme using an IVTV card and then splitting the
>> file with gopchop the second section starts at the time of the split
>> instead of 0. The reason I've found is that the System Clock Reference
>> has not been reset to 0.
>>
>> Is it possible to use mencoder just to rewrite the pack headers and
>> leave the program streams intact. Especially the private data stream,
>> which contains teletext data, that I will want to process to extract the
>> subtitles. The subtitling extraction is already written, but will need
>> to change my program to optionally use the SCR. It would be nice to have
>> the times starting at zero instead of say 56mins.
>>
>> I've been googling for quite a while to see it someone has the answer
>> but no joy.
>>
>> TIA,
>> Duncan
>>
>>  
>>
> it's not possible for the simple reason that the value of the SCR
> has important consequences on the whole stream: buffers occupation,
> playback time, etc.
> I seriously doubt you will ever find what you are looking for

Okay, thanks. Thought it may just require a difference from the first
SCR applied to all the rest. But no joy :-(

Duncan