Re: [FFmpeg-user] ffmpeg and use of the ildct flag in progressive encoding

2023-12-18 Thread Nik Armstrong
On 2023-12-17 13:22, Bouke / Videotoolshed wrote: On 17 Dec 2023, at 20:44, Nik Armstrong wrote: On 2023-12-16 15:01, Erik Dobberkau wrote: The ildct flag appears only to be making the output file "think" it is interlaced, when it is, in fact, progressive. It does not seem to be doing

Re: [FFmpeg-user] ffmpeg and use of the ildct flag in progressive encoding

2023-12-17 Thread Erik Dobberkau
Sometimes it’s wanted / needed to have all files ’the same’. > If that is interlaced, it’s interlaced. Codec should say ‘interlaced’, no > matter the actual content. > > For Avid media, that might (depending on the version of MC) be important > for a ‘fast import’, or omitting adapters you don’t

Re: [FFmpeg-user] ffmpeg and use of the ildct flag in progressive encoding

2023-12-17 Thread Bouke / Videotoolshed
> On 17 Dec 2023, at 20:44, Nik Armstrong wrote: > > On 2023-12-16 15:01, Erik Dobberkau wrote: >> The ildct flag appears only to be making the output file "think" it is >>> interlaced, when it is, in fact, progressive. It does not seem to be doing >>> anything to change the footage

Re: [FFmpeg-user] ffmpeg and use of the ildct flag in progressive encoding

2023-12-17 Thread Nik Armstrong
On 2023-12-16 15:01, Erik Dobberkau wrote: The ildct flag appears only to be making the output file "think" it is interlaced, when it is, in fact, progressive. It does not seem to be doing anything to change the footage (quality-wise and it's still progressive). Since someone other than myself

Re: [FFmpeg-user] ffmpeg and use of the ildct flag in progressive encoding

2023-12-16 Thread Erik Dobberkau
The ildct flag appears only to be making the output file "think" it is > interlaced, when it is, in fact, progressive. It does not seem to be doing > anything to change the footage (quality-wise and it's still progressive). > Since someone other than myself set the flag on this command, I am

Re: [FFmpeg-user] ffmpeg and use of the ildct flag in progressive encoding

2023-12-16 Thread Nik Armstrong
On 2023-12-14 12:50, Nik Armstrong wrote: I've encountered a scenario where someone else has programmed an ffmpeg encoding command with flags that seem puzzling, and I'm having difficulty understanding their purpose. The command in question is: ffmpeg -loglevel info -y -r 29.97 -start_number 0

[FFmpeg-user] ffmpeg and use of the ildct flag in progressive encoding

2023-12-14 Thread Nik Armstrong
I've encountered a scenario where someone else has programmed an ffmpeg encoding command with flags that seem puzzling, and I'm having difficulty understanding their purpose. The command in question is: ffmpeg -loglevel info -y -r 29.97 -start_number 0 -i image_sequence_%4d.png -vcodec dnxhd