mp4 atom too large

Richard Kearsley rkearsley at blueyonder.co.uk
Sat Jun 29 08:50:53 UTC 2013


Hi

I already checked there, I'm getting a different error ("mp4 atom too 
large" != "mp4 moov atom is too large")
My error message seems to have been added in this patch 
http://nginx.org/download/patch.2012.mp4.txt
In any case, the example given there gives a reasonable example, as 
'12583268' is around 12MB so increasing it by 2MB would not be an issue
However in my case, the value given is '723640794' which is around 690MB 
which is bigger than the actual file!
I believe nginx is reading this information wrong in some way, either by 
the mp4 file being invalid or a bug
Either way, I would like help to understand the error

Thanks

On 28/06/13 17:57, Lukas Tribus wrote:
> Hi!
>
> ----------------------------------------
>> Date: Fri, 28 Jun 2013 17:11:01 +0100
>> From: rkearsley at blueyonder.co.uk
>> To: nginx at nginx.org
>> Subject: mp4 atom too large
>>
>> Hi
>>
>> I use ngx_http_mp4_module quite heavily, and very occasionally I see
>> this error for a few files:
>>
>> mp4 atom too large:723640794
>>
>> With the number differing.. Is the number the size of the atom in bytes?
>> If so, 723640794 is around 690MB and the mp4 file is only around 150MB
>
>
> Try increasing mp4_max_buffer_size:
> http://nginx.org/en/docs/http/ngx_http_mp4_module.html
>
>
> Also make sure the MP4 file has the atom at the beginning of the file.
>
>
>
>
> Regards,
>
> Lukas 		 	   		
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