[FFmpeg-user] Showinfo bug?

[Paul B Mahol]

On 3/4/20, Mark Filipak <markfilipak.windows+ffmpeg at gmail.com> wrote:
> Is this a showinfo bug, or am I misinterpreting the results?
>
> For VOBs that are known to be 23.976 FPS, soft-telecined, this command:
> 'ffprobe -f lavfi movie=VTS_01_1.VOB,showinfo'
> reports that they're 59.94 FPS.
>
> The first & last lines of output show this:
> "[Parsed_showinfo_1 @ 000001d381f6dc80] config in time_base: 1/90000,
> frame_rate: 60000/1001"
> "    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x480
> [SAR 1:1 DAR 3:2], 59.94 tbr, 90k tbn, 90k tbc"
>
> This seems to be a rather big error, if indeed it is an error. At
> question is the reliability of ff*.
>

I trust more ff* than you.

> In contrast, as expected, 29.97 FPS, hard-telecined videos are reported
> as 29.97 FPS.
> "[Parsed_showinfo_1 @ 00000222eeb2dc80] config in time_base: 1/90000,
> frame_rate: 30000/1001"
> "    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x480
> [SAR 1:1 DAR 3:2], 29.97 fps, 29.97 tbr, 90k tbn, 90k tbc".
>
> Please comment. I'm not particularly knowledgeable regarding ff*.
>
> Regards,
> Mark.
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