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17th February 2010, 23:38 | #1 | Link |
Registered User
Join Date: Feb 2010
Posts: 2
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Generate MP4 header
Hello. I'm working on video converting script. What I'm trying to achieve is ability to start downloading converted MP4 video (x264+aac) before converting is complete.
However when I try to redirect output of ffmeg or mencoder to STDOUT I got "muxer doesn't support non seekable output". So the question is: how to generate MP4 header knowing source video properties (duration, number of frames, dimensions, etc)? What tools can be used to create such a header and append converted streams to it? |
18th February 2010, 17:25 | #3 | Link |
Registered User
Join Date: Feb 2010
Posts: 2
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Thanks for the answer. Please excuse my lack of knowledge but is it possible to generate index in advance? I mean *if resulted video will have the same number of frames as source one, same frame rate, and I-frame will be every N-th frame (no B-frames)?
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Tags |
aac, mp4, x264 |
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