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Old 13th June 2013, 08:04   #1  |  Link
Rouhi
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raw .264 stream with SEI

Hi
I used ffmpeg to encode a video to a raw .264 video stream. Unfortunately the generated .264 does not provide any time frame and ffplay can not play it in a proper frame per second. Does anyone know how can i activate SEI timing in a raw .264 stream ? the type of encoder is not important for me. i just need a .264 with timing of each frame.
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Old 13th June 2013, 19:32   #2  |  Link
imcold
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You probably meant VUI, I believe. Anyway, what's wrong with x264's raw h264 output? It has both SEI and VUI, iirc.
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Old 13th June 2013, 22:30   #3  |  Link
kieranrk
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x264 doesn't write the timecode SEI largely because I have no idea how to deal with pulldown.
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Old 14th June 2013, 04:45   #4  |  Link
Rouhi
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I extract the I-Frames in my work. I am looking for a method to find out the time of each i-frame that i extract from video stream. thats why i looking for SEI as a VUI parameter.
I dont know why SEI can cause problem with pulldown!! whats that?
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Old 14th June 2013, 11:37   #5  |  Link
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Quote:
Originally Posted by Rouhi View Post
I am looking for a method to find out the time of each i-frame that i extract from video stream.
If you know the frame number and the frame rate, can't you calculate the time?
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Old 18th June 2013, 02:14   #6  |  Link
Rouhi
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No it is not as easy as that.. In some videos the i-frame rate is very high and the i-frame count can not help you in those situations.
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Old 18th June 2013, 12:31   #7  |  Link
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I didn't mention I-frame counts at all, so I cannot follow your point.

You can determine the frame numbers of the I frames. Then you can calculate their times using the frame rate.
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