[FFmpeg-trac] #11557(avcodec:new): Abnormally choked loading for "non-existing PPS 0 referenced"?

FFmpeg trac at avcodec.org
Thu May 8 08:23:12 EEST 2025


#11557: Abnormally choked loading for "non-existing PPS 0 referenced"?
------------------------------------+-----------------------------------
             Reporter:  wazer       |                    Owner:  (none)
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  h264        |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  1           |
------------------------------------+-----------------------------------
Comment (by MasterQuestionable):

 ͏    The log probably wouldn't be of much use.

 ͏    I guess it's mostly the cause mentioned by Balling:
 ͏    Dependent frames unavailable for the current frame's decoding.
 ͏    (that utilizes Inter-frame compression: a frame may refer arbitrary
 other frames)
 ͏    .
 ͏    Thus it may only continue display at that doesn't depend on previous
 missing frames.
 ͏    (or presenting half-decoded garbage meanwhile)

 ͏    The problem could probably be mitigated by setting "-noaccurate_seek"
 (input)?
 ͏    Or certain fix on the server-side that delivers the stream.

 ͏    ----

 ͏    Off-Topic:
 ͏    Interesting fact:
 ͏    The [ https://i.imgur.com/H7X30ua.png ] here can receive 90%+ size
 reduction via WebP Lossless:
 ͏    `ffmpeg -y -v debug -hide_banner -nostdin -nostats -i "H7X30ua.png"
 -lossless 1 -q 100 -compression_level 6 "H7X30ua.webp"`
 ͏    (188,343 B vs. 13,240 B)
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11557#comment:19>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


More information about the FFmpeg-trac mailing list