[Libav-user] is possible to hack av_write_trailer to write moov atom at the beginning?

[Wenbin Ma]

Thanks for your reply.

I'm build an application linked with libavcodec.so, libavformat.so, 
libswscale.so, libavutil.so.  how to debug into the code of these shared 
objects?

Thanks,
Wenbin

On 07/11/2013 03:39 PM, Anshul wrote:
> On 07/11/2013 12:50 PM, Wenbin Ma wrote:
>> Hi,
>>
>> I want to use ffmpeg library to encode a h264 mp4 for http 
>> progressive streaming. However ffmpeg added the moov atom at the end 
>> when calling api: av_write_trailer. My basic idea is override the 
>> API: av_write_trailer to write moove atom at the beginning. For 
>> example, I have a 5 second video, the frame rate is 25, I have these 
>> basic information of the encoded video here before I really add each 
>> frame to an AVStream.  so is it possible write these information at 
>> the beginning? Can you give me some clue about how to write this 
>> function?
>>
>> BTW, even I build ffmpeg with --enable-debug=3,  I still cannot debug 
>> into ffmpeg code in Qt Creator, how do you debug ffmpeg code?
>>
>> Thanks,
>> Wenbin
>>
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>
> hi
>
> please debug ffmpeg_g not ffmpeg
>
> thanks
> anshul
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