[FFmpeg-user] xVid and version Q

[Jim Shupert]

On 5/13/2011 1:41 PM, Etienne Buira wrote:
> On Fri, May 13, 2011 at 01:21:15PM -0400, Jim Shupert wrote:
>>
>> On 5/13/2011 12:57 PM, Etienne Buira wrote:
>>> On Fri, May 13, 2011 at 09:57:23AM -0400, Jim Shupert wrote:
>>>> On 5/12/2011 5:50 PM, Jim Shupert wrote:
>>>>>    Friends,
>>>>>
>>>>> I made a file with ffmpeg [ -vcodec libxvid ]
>>>>>
>>>>> ffmpeg -i D:\path\vid\my.mpg -ab 192000 -ar 48000 -b 8000000 -s 720x480
>>>>> -vcodec libxvid  -acodec libmp3lame D:\path\vid\my.avi
>>>>> ( and file looks fine - plays in VLC , wonderful )
>>>>>
>>>>> when I analyze a file with Gspot it repots the file video codec to be
>>>>> xvid ISO MPEG-4. ISO
>>>>> I think this is xvid 1.3.1 .
>>>>> when i examine with media info or ffprobe it simply says Codec:xvid.
>>>>>
>>>>> What are the major differences between
>>>>> xvid 1.1.2  and xvid ISO MPEG-4. ISO?
>>>>>
>>>>>
>>>>> If i wish to provide a person Xvid 1.1.2 can I get that older codec
>>>>> version or would it be suggested to have the person update thier
>>>>> player codecs.
>>>>>
>>>>> They are asking for Xvid 1.1.2  is this a reasonable request isn't it
>>>>> just older - don't ya think they could just update their codec?
>>>>>
>>>>> Simply said is the file I made with ffmpeg [-vcodec libxvid ] simply a
>>>>> newer version of xvid 1.1.2 or is something fundamentally different.
>>>>>
>>>>> Thanks much
>>>>>
>>>>>
>>>> is there any reason to think that the file made with -vcodec libxvid
>>>> { that i think is Xvid 1.3.1 isn't that true ? }
>>>> would not be backward compatible to xvid 1.1.2 ?
>>>> meaning play ok in any player that can play xvid1.1.2
>>>>
>>>>     i did some googling -- and i current think
>>>> -vcodec libxvid  = =  XviD 1.3.1 = = xvid ISO MPEG-4. ISO -------is that
>>>> true?
>>>> and
>>>> those files should play in anything that plays xvid 1.1.2
>>>>
>>>> any wisdom would be appreciated -
>>> Hi.
>>>
>>> Actually, you have to distinguish two things:
>>> 1. The bitstream format, here you are talking about mpeg 4 part 2
>>> 2. The software that outputs a bitstream, taking raw input and
>>>      compressing it the best it can (in parameters limits) to compress it
>>>      using the bitstream format constructs. xvid stands here.
>>>
>>> So, it should be as simple as "use divx/xvid/whatever" to encode, and
>>> use whatever mpeg4part2 decoder to play. This is often true.
>>> _______________________________________________
>>>
>> Thank you for your reply -- i do appreciate it.
>> and I follow what you state here.
>>
>> simply said here is my challenge.
>> I have made files for a fellow who looks at them in gSpot and sees
>>
>> xvid ISO MPEG-4. ISO   not  xvid 1.1.2
> I'd then say that gspot have a strange way to report formats, but I
> understand gspot's output as "mpeg4 part2".
>
>> I contend that what i made is xvid 1.3.1 and that is even better.
> Newer is not always better, but that's another story.
>
yes , i know what you mean....it can be ..... checkered
>> Am i incorrect about that ? isn't the files made via  -vcodec libxvid using the  codec known as xvid 1.3.1 and isn't that backwards compatible with xvid1.1.2.
>> actually even better?
> -vcodec libxvid will encode to mpeg4 part2, whatever version you are
> using (and you use the version that were found when compiling ffmpeg).
>
> But I don't see where is your trouble, making sure your files will play
> flawlessly on all players/platforms? Target a particular player that
> says it plays xvid version.no.no?
yes , exactly this --- targeting a player that says it plays xvid 1.1.2
-thanks
> Something else?
>
>> Thanks again!
>>
>>
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