[FFmpeg-trac] #8756(avformat:new): libavformat/avisynth.c does not set interlacing and field order

FFmpeg trac at avcodec.org
Thu Jun 25 13:35:48 EEST 2020


#8756: libavformat/avisynth.c does not set interlacing and field order
----------------------------------+---------------------------------------
             Reporter:  emcodem   |                     Type:  enhancement
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  unspecified
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 Summary of the bug:
 When using avisynth source (.avs files), the interlacement and field order
 is not being set. I believe st->codec->field_order could be set around
 line 120 in avisynth.c, based on the avisynth values int
 avs_is_field_based
 int avs_is_parity_known
 int avs_is_bff
 int avs_is_tff


 How to reproduce:
 ffmpeg:
 {{{
 % ffprobe.exe -read_intervals "%+#2" -show_entries
 "frame=interlaced_frame,tff" -pretty -print_format json -of json
 test.avs
 }}}

 avisynth test.avs script:
 {{{
 colorbarshd()
 assumefieldbased()
 assumetff()
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/8756>
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