[FFmpeg-trac] #8050(avfilter:new): Active Format Description missing (MPEG-2 and H.264)
FFmpeg
trac at avcodec.org
Tue Jul 30 18:18:47 EEST 2019
#8050: Active Format Description missing (MPEG-2 and H.264)
-------------------------------------+-------------------------------------
Reporter: atorp | Type:
| enhancement
Status: new | Priority: normal
Component: avfilter | Version: git-
Keywords: adf, | master
mpeg2_metadata, h264_metadata | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
When capturing some DVB-S and DVB-T broadcasts, we can see that the
bitstream of the MPEG-2 and AVC/H.264 services include often the Active
Format Description (adf):
https://en.wikipedia.org/wiki/Active_Format_Description
This flag is usually transmited in:
- MPEG-2: As "User Data" section (user id: "DTG1").
- H.264: As "Auxiliary data" in a SEI unit (user id: "DTG1").
None of the current mpeg2 and h264 encoders handle that flag. However, as
the Bitstream Filters for MPEG-2 (mpeg2_metadata) and H.264
(h264_metadata) can handle different flags similar to this, I request to
add support for set/get the ADF flag.
Thank you!
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8050>
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