[NUT-devel] r18904 - trunk/DOCS/tech/mpcf.txt

[Luca Barbato]

Ivan Kalvachev wrote:
> 
>> Modified: trunk/DOCS/tech/mpcf.txt
>> ==============================================================================
>>
>> --- trunk/DOCS/tech/mpcf.txt    (original)
>> +++ trunk/DOCS/tech/mpcf.txt    Tue Jul  4 23:14:55 2006
>> @@ -443,6 +443,8 @@
>>      example: "H264"
>>      MUST contain 2 or 4 bytes, note, this might be increased in the
>> future
>>      if needed
>> +    the id values used are the same as in avi, so if a codec uses a
>> specific
>> +    fourcc in avi then the same fourcc MUST be used here
> 
> What are we going to use for wav tags for audio formats that doesn't
> have official one?
> I have asked this quiestion about 5 times already.

I think we could use mov ones or just made up ourselves.

> 
>>  time_base_nom / time_base_denom = time_base
>>      the length of a timer tick in seconds, this MUST be equal to the
>> 1/fps
>> @@ -716,6 +718,11 @@> 
>> Modified: trunk/DOCS/tech/mpcf.txt
>> ==============================================================================
>>
>> --- trunk/DOCS/tech/mpcf.txt    (original)
>> +++ trunk/DOCS/tech/mpcf.txt    Tue Jul  4 23:14:55 2006
>> @@ -443,6 +443,8 @@
>>      example: "H264"
>>      MUST contain 2 or 4 bytes, note, this might be increased in the
>> future
>>      if needed
>> +    the id values used are the same as in avi, so if a codec uses a
>> specific
>> +    fourcc in avi then the same fourcc MUST be used here
> 
> What are we going to use for wav tags for audio formats that doesn't
> have official one?
> I have asked this quiestion about 5 times already.

I think we could use mov ones or just made up ourselves.
,,,,,,,,
>>      "Source"
>>          "DVD", "VCD", "CD", "MD", "FM radio", "VHS", "TV", "LD"
>>          Optional: appended PAL, NTSC, SECAM, ... in parentheses
>> +    "SourceContainer"
>> +        "nut", "mkv", "mov", "avi", "ogg", "rm", "mpeg-ps",
>> "mpeg-ts", "raw"
>> +    "SourceCodecTag"
>> +        the source codec id like a fourcc which was used to store a
>> specific
>> +        stream in its SourceContainer
> 
> That would be better to be named "SourceStreamTag" .

I like better SourceContainer or SourceTag

> 
> I'd also like to have "SourceEncoder" that contains the name and
> version of the encoder.
> 
>>      "CaptureDevice"
>>          "BT878", "BT848", "webcam", ... (more exact names are fine too)
>>      "CreationTime"
> 
> BTW, why  chapter_id/start/len are mandatory fields in the info packet
> and not entries like all the rest?

Those are informative, chapter stuff could change radically the playback.

-- 

Luca Barbato

Gentoo/linux Gentoo/PPC
http://dev.gentoo.org/~lu_zero