Whats The Difference Between This Two Videos ? Mp4 Codecs

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Whats The Difference Between This Two Videos ? Mp4 Codecs

Post by winathere on Sat Mar 17, 2018 9:54 pm

I have no idea where should i ask this kind of question. There is no su much place for codecs i guess. I hope you can help me. I have a wowza server and i want to stream some mp4 clips as a microsoft smooth format. But half of them is not working with wowza. It doesn't start playing. (I'm using rx-player for play these smooth streams and it's working great except some mp4 videos.) I record this two different clips with same way so they should be same. After i record this clips i'm using this code from ffmpeg for fix moov points for seeking :

   ffmpeg -i clip_temp.mp4 -codec copy -movflags +faststart clip.mp4

I don't understand much about this codecs. Here some info from mp4box and ffprobe. How can i find the problem ? Can you tell me please whats the difference ? I should fix my clips but i don't wanna use too much time and cpu power with encoding. I hope i can fix them without re-encode with your help. Here pictures : (Red one isn't working)






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Re: Whats The Difference Between This Two Videos ? Mp4 Codecs

Post by notcyf on Sun Mar 18, 2018 6:48 am

The difference is is that the left video is encoded using the H.264 Main profile specification and the right video was encoded using the H.264 High profile specification.

Your server does not support H.264 High profile.

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Re: Whats The Difference Between This Two Videos ? Mp4 Codecs

Post by winathere on Sun Mar 18, 2018 5:31 pm

Thank you so much for your comment! Is there any way to convert it to main profile without re-encode ? With ffmpeg or mp4box maybe ? I will search web for this profile difference. Thanks!

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Re: Whats The Difference Between This Two Videos ? Mp4 Codecs

Post by Admin on Sun Mar 18, 2018 6:04 pm

You can't change the profile without re-encoding.

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