[MPlayer-users] gmplayer displays just a crop of an mp4, sample file

[Larry Reznick]

Carl Eugen Hoyos wrote:
> Hi!
>
> Larry Reznick <lreznick <at> idistream.com> writes:
>
>   
>> That works around the problem. However, MPlayer does recognize the file 
>> format as Quicktime/MOV, so why doesn't it interpret the data correctly, 
>> as VLC did?
>>     
>
> How do you know vlc interpreted it correctly? Did you read the quicktime
> specifications and compared to the actual file? (I didn't, that's why I think it
> should be moved to samples to be investigated.)
>
> Carl Eugen

I didn't compare the file with the QuickTime spec, but VLC plays the 
correct size, acting as if it had found something in the data set about 
the 640x480 that MPlayer didn't find and acts on it. When told to use 
-demuxer lavf, MPlayer handles the size correctly.  I agree that someone 
with more knowledge about the Quicktime/MOV spec should investigate this 
more closely.

--Larry