[FFmpeg-trac] #11683(avcodec:new): "libx265" generated videos abnormal frames parsing? (was: Error encoding to H265 (H264 is ok))
FFmpeg
trac at avcodec.org
Sat Aug 2 15:45:16 EEST 2025
#11683: "libx265" generated videos abnormal frames parsing?
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Reporter: rgr | Owner: (none)
Type: defect | Status: new
Priority: important | Component: avcodec
Version: 7.1 | Resolution:
Keywords: libx265 OGOP | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 1 |
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Changes (by MasterQuestionable):
* analyzed: 0 => 1
* cc: MasterQuestionable (added)
* keywords: h265 encoding => libx265 OGOP
* summary: Error encoding to H265 (H264 is ok) => "libx265" generated
videos abnormal frames parsing?
Comment:
͏ I guess the cause might be OGOP (Open GOP).
͏ What are the interpreted encoding configs (returned by "libx265")?
͏ (or "Encoding settings" of MediaInfo)
͏ Should:
͏ `ffmpeg -y -v debug -hide_banner -nostdin -nostats -f lavfi -i
"testsrc2=1920x1080:30:d=15" -c:v libx265 -preset slow -crf 19 "Out.mkv"`
͏ ; reproduce then?
͏ To explicitly disable OGOP, add: `-x265-params "open-gop=0"`
͏ More tools for output analysis:
͏ `ffprobe -v warning -hide_banner -threads 0 -show_entries "frame"
-select_streams v:0 -of "xml" "Out.mkv" -o "Out.mkv.xml"`
͏ https://media-analyzer.pro/app
͏ https://hintfo.com/
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11683#comment:3>
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