at-wat/ebml-go

[Question] Cue Point Section

aromancev opened this issue · 2 comments

aromancev commented

Hi,

Thank you for such an amazing package!

I'm trying to write a WebM file from an RTP (webrtc stream) like this: https://github.com/pion/example-webrtc-applications/tree/master/save-to-webm

Apparently, any files created from a continuous stream of data lack cues (key frame meta header). This makes ffmpeg choke when trying to create a Dash manifest (error when parsing cues).

I see there are exported structs to work with Cue Points, but I'm not sure how to use them and I don't know much about video encoding and WebM container specification.

Do you have any recommendations on how to add cues initialisation section to make the resulting file dash compatible? Maybe I can add the cue point section with this package after the initial file had been created.

Thanks!

at-wat commented

Does #134 answer your case?

aromancev commented

Oh, I see.

Thanks a lot, that explains it!

I will try to implement it myself, but would really appreciate an example of how I can do it. If you don't have time for it, please feel free to close the issue.