[FFmpeg-user] How to see what mediainfo sees prores.mov
adf.lists at gmail.com
Thu Feb 18 14:04:30 CET 2016
Moritz Barsnick wrote:
> Hi Andy,
> On Thu, Feb 18, 2016 at 12:07:44 +0000, Andy Furniss wrote:
>> Just idle messing around, wanted to make an interlaced prores just to
>> see how players/deinterlacers handled it.
> Disclaimer: I know very little about interlace stuff.
>> I know the command is "wrong" for colour etc - just a minimal test.
>> ffmpeg -f image2 -pattern_type glob -framerate 25 -i '02*.sgi' -vf setfield=tff -c:v prores 1080i25.mov
> There are two things:
> a) The encoder needs to support interlaced encoding.
> b) You need to tell it to do so using flags.
> a) From what I found using Google and the source code, only the encoder
> prores_ks does support it. See
> and search for AV_CODEC_FLAG_INTERLACED_DCT in libavcodec/.
> The encoder "prores" you use is "prores_aw".
> b) The flags to add to the command line are "-flags +ildct", or even
> "-flags +ilme+ildct". See also
Thanks, TBH I should have known to try that (though it would be good if
it were documented).
I temporarily stopped looking into that aspect after being distracted by
the mediainfo "issue".
>> Scan type : Interlaced
>> Original scan type : Progressive
>> Scan type, store method : Interleaved fields
>> Scan order : Top Field First
> We don't know what mediainfo is looking at here. I may be wrong and
> mediainfo right. ;-)
I think you are right and will test later, but I still think I should
know how to get
ffmpeg/ffprobe to show such fundamental info.
I guess this is in the container and it bugs me having to use mediainfo
to see it.
I know mediainfo can probe more than ffmpeg in certain cases - but I
consider interlaced/field order
to be quite fundamental and expected there to be a way to see it that I
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