#310 YUV422P16 output doesn't work correctly

[Anonymous]

If output format is set to "4:2:2 planar YCbCr 16-bit" in "Output format to compressor" dialog in order to output uncompressed YUV422P16 (Y3[10][16]) clip, the actual output format becomes P216, not YUV422P16. Similar behavior exists for YUV444P16 (->v410) and YUV420P16 (->P016).

It is same in vcf script. e.g.:

VirtualDub.Open("input.avi");
VirtualDub.video.SetMode(3);
VirtualDub.video.SetInputFormat(0);
VirtualDub.video.SetOutputFormat(59);
VirtualDub.video.SetCompression();
VirtualDub.SaveAVI("output-yuv422p16le.avi"); <- output is P216, not YUV422P16

I have first found this problem in build 44220. According to my manual bisect, build 43073 is OK and build 43602 is NG.

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umezawatakeshi

[Anton Shekhovtsov]

Thanks, I checked code and the reason for this is I blacklisted certain uncompressed formats which "do not belong" to AVI. This started from cleaning up the way uncompressed rgb is stored in MOV, MKV. At the time I checked whether FFMPEG accepts each format for storing in AVI and disabled these:
XRGB64
Y16
YUV420_Planar16
YUV422_Planar16
YUV444_Planar16
all planar RGB
Also when exact match is not found the format is replaced by something similar.

Now I recall that you use it for testing. I can add an option to accept "non-standard" formats.

[Anonymous]

Thanks.

I understand as:

Because the above mentioned uncompressed formats are non-standard (= not widely used) in AVI files, the support of those formats as
- uncompressed output formats (to AVI) is dropped and replaced to similar standard uncomressed formats.
- output/input formats to/from codecs is not dropped.
- uncompressed input formats (from AVI) is not dropped either.
This behavior change is intended, i.e. this is to avoid unintentionally output non-standard uncompressed format AVI files.

Is it right?

As far as VD2 supports those formats as output format to codecs, I want to still support them in UtVideo. If it is not very difficult to add an option to accept non-standard uncompressed formats, I hope the option, for generating test clips.

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umezawatakeshi

[Anton Shekhovtsov]

Yes, all is correct.

[Anton Shekhovtsov]

build 44282:
You can find the option in Preferences->AVI

[Anonymous]

I have confirmed its behavior. Thanks.

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umezawatakeshi