Can Not Find NAL Unit Header in mp4 file
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King David
Mar 2, 2024, 6:16:59 PM3/2/24
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Hello Sergio, first of all many thanks for your awesome product.
I am not that much of an expert on this matter, please bear with me.
Using Medooze, I am able to create a video recording of what I believe is an mp4 file containing an h264 stream. My problem in a post process step ffmpeg is complaining about not finding a NAL unit header in the mp4 file. Which btw I believe is also the reason the file is not playable with microsoft media but it plays with VLC. So far I haven't found a way to insert the silly NAL header in the file. Is there any ways you can kindly recommend me I can do that at recording time?
So far this is what I've tried without success:
1. I've tried the medooze-streamer-demo code which pipes the stream through an ffmpeg instance but I am giving up because I am finding it difficult to apply it to the stream I am receiving, which in itself would ba an entire different question, therefore I am going for option 2.
2. Maybe is it just a matter of changing one byte in the recorded file? I've read that bytes 13 to 16 have to say 00 00 00 01 and the Medooze file says 00 00 00 00... But I am not sure if that's all I would have to do.
I thank you beforehand for your assistance.
I am not that much of an expert on this matter, please bear with me.
Using Medooze, I am able to create a video recording of what I believe is an mp4 file containing an h264 stream. My problem in a post process step ffmpeg is complaining about not finding a NAL unit header in the mp4 file. Which btw I believe is also the reason the file is not playable with microsoft media but it plays with VLC. So far I haven't found a way to insert the silly NAL header in the file. Is there any ways you can kindly recommend me I can do that at recording time?
So far this is what I've tried without success:
1. I've tried the medooze-streamer-demo code which pipes the stream through an ffmpeg instance but I am giving up because I am finding it difficult to apply it to the stream I am receiving, which in itself would ba an entire different question, therefore I am going for option 2.
2. Maybe is it just a matter of changing one byte in the recorded file? I've read that bytes 13 to 16 have to say 00 00 00 01 and the Medooze file says 00 00 00 00... But I am not sure if that's all I would have to do.
I thank you beforehand for your assistance.
King David
Mar 2, 2024, 6:23:22 PM3/2/24
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