Opened 2 years ago

Last modified 2 years ago

#8050 new enhancement

Active Format Description missing (MPEG-2 and H.264)

Reported by: Anton Torp Owned by:
Priority: wish Component: avcodec
Version: git-master Keywords: mpeg2video libx264
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

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!

Change History (2)

comment:1 by Carl Eugen Hoyos, 2 years ago

Keywords: mpeg2video libx264 added; adf mpeg2_metadata h264_metadata removed
Priority: normalwish

comment:2 by Carl Eugen Hoyos, 2 years ago

Component: avfilteravcodec
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