[FFmpeg-user] Fwd: png to mp4 conversion error.

[ನಾಗೇಶ್ ಸುಬ್ರಹ್ಮಣ್ಯ (Nagesh S)]

The identify command does show difference but, I am not sure, I understand
them. For example, ffmpeg says, "unspecified pixel format". But, the image
properties do not list anything specific to pixel format. Apart from that,
the image that does not transcode successfully shows a histogram in its
output whereas, this histogram is not seen with the image that works.