On 2/3/2019 11:58 AM, Ulf Zibis wrote:
But could you please tell me the meaning of "top first" in ffprobe output of the vob file, which is missing after transcoding to mp4.
It's a shortening of "Top Field First" (TFF). With interlaced video you have a choice of whether the top or bottom field (odd numbered lines/even numbered lines) comes before the other in the digital stream.
(I've also found that some software can not work with interlaced content with one or the other (some want TFF, some want BFF, some don't care).)
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