debcrafters-packages team mailing list archive

[Charles <2121434@xxxxxxxxxxxxxxxxxx>]

** Description changed:

  Testing with the Big Buck Bunny videos (e.g. https://test-
  videos.co.uk/vids/bigbuckbunny/mp4/h264/720/Big_Buck_Bunny_720_10s_10MB.mp4)
  
  GST_DEBUG=*:1 totem Big_Buck_Bunny_720_10s_30MB.mp4
  
  I see,
  
  0:00:01.676017565 16373 0x5f89752c05e0 ERROR            openh264dec
  :0::<openh264dec0> [OpenH264] this = 0x0x7f09e001a000, Error:Ref Picture
  for B-Slice is lost, B-Slice decoding cannot be continued!
  
- Even with gst-plugins-bad installed. There are two problems here.
+ Even with gst-plugins-bad installed. There are at least three problems
+ here.
  
  1. openh264dec is ranked more highly than libav decoders for h264 (on
  jammy at least). That's a suboptimal user experience, since openh264dec
  is not as robust
  
  2. Totem stalls out after about 1 second with no guidance to the user
  what went wrong.
+ 
+ 3. openh264 has a decoding bug, since the B-slice hierarchy is spec
+ compliant here.

-- 
You received this bug notification because you are a member of
Debcrafters packages, which is subscribed to totem in Ubuntu.
https://bugs.launchpad.net/bugs/2121434

Title:
  totem is not reporting decoder errors to the user

Status in totem package in Ubuntu:
  Incomplete
Status in totem source package in Jammy:
  New

Bug description:
  Testing with the Big Buck Bunny videos (e.g. https://test-
  videos.co.uk/vids/bigbuckbunny/mp4/h264/720/Big_Buck_Bunny_720_10s_10MB.mp4)

  GST_DEBUG=*:1 totem Big_Buck_Bunny_720_10s_30MB.mp4

  I see,

  0:00:01.676017565 16373 0x5f89752c05e0 ERROR            openh264dec
  :0::<openh264dec0> [OpenH264] this = 0x0x7f09e001a000, Error:Ref
  Picture for B-Slice is lost, B-Slice decoding cannot be continued!

  Even with gst-plugins-bad installed. There are at least three problems
  here.

  1. openh264dec is ranked more highly than libav decoders for h264 (on
  jammy at least). That's a suboptimal user experience, since
  openh264dec is not as robust

  2. Totem stalls out after about 1 second with no guidance to the user
  what went wrong.

  3. openh264 has a decoding bug, since the B-slice hierarchy is spec
  compliant here.

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