>Uh. Not sure how you know you want to transport data “similar to timed id3 >metadata” when you don’t know what it is, it would help if you could tell us >what kind of metadata you’re looking to include… > >Timed ID3 tags are only used in HLS (I think, don’t quote me on that). They’re >literally ID3 tags (such as that you might find in an mp3 file, for example), >that are inserted at certain points in time in the TS stream. > >The way I’ve seen it being it used is to change the title of the stream at >discontinuity points (for example it could be a tag with metadata for an >episode of a TV show, then another could be inserted when ads play, or another >show starts, etc)
The usage of id3 timed metadata can be found in the following link: https://developer.apple.com/library/archive/documentation/AudioVideo/Conceptual/HTTP_Live_Streaming_Metadata_Spec/2/2.html#//apple_ref/doc/uid/TP40010435-CH2-DontLinkElementID_9 The format of metadata in flv is of AMF, and you can find some company has implemented it, i.e. to convert amf into id3: https://www.wowza.com/docs/how-to-use-timed-metadata-in-wowza-live-streaming-workflows I think the function can be implemented in some self-defined bsf. Thanks! Regards Andrew At 2019-10-22 07:30:24, "Ted Park" <kumowoon1...@gmail.com> wrote: > > >> On Oct 19, 2019, at 8:39 AM, qw <applema...@163.com> wrote: > >> >>>>>> mpeg2 ts supports metadata and private data. How to send some metadata >>>>>> in mpeg2 ts periodically at some fixed interval via ffmpeg? >>>>> >>>>> Are you talking about timed id3 metadata? >>>> >>>> In ISO/IEC 13818-1, 2.12 carriage of metadata gives several options for >>>> transport of metadata. I don't know timed id3 metadata. >>> >>> … >> >> Thanks for your reply. >> Yes, I want to transport some metadata similar to timed id3 metadata. What >> is id3 metadata used for? > > >Uh. Not sure how you know you want to transport data “similar to timed id3 >metadata” when you don’t know what it is, it would help if you could tell us >what kind of metadata you’re looking to include… > >Timed ID3 tags are only used in HLS (I think, don’t quote me on that). They’re >literally ID3 tags (such as that you might find in an mp3 file, for example), >that are inserted at certain points in time in the TS stream. > >The way I’ve seen it being it used is to change the title of the stream at >discontinuity points (for example it could be a tag with metadata for an >episode of a TV show, then another could be inserted when ads play, or another >show starts, etc) >_______________________________________________ >ffmpeg-user mailing list >ffmpeg-user@ffmpeg.org >https://ffmpeg.org/mailman/listinfo/ffmpeg-user > >To unsubscribe, visit link above, or email >ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
