[FFmpeg-user] problem with fast seeking and splitting

2022-05-01 Thread Alexander Solonsky via ffmpeg-user
Dear Experts, I'm trying to split an input file into 2 second chunks, transcode and assemble using a concat muxer. And experiencing two problems: major one: 1) when using ffmpeg -ss 00:00:08 -t 2 -i -c:v libx264 instead of seeking to second 8, ffmpeg seeks somewhere to second 15 or so.

Re: [FFmpeg-user] Single-field deinterlace with nnedi

2022-05-01 Thread Paul B Mahol
On 4/30/22, Alexander Zhang wrote: >>> I'm trying to use nnedi to deinterlace a 29.97 fps video without >>> doubling the frame rate. I added the fields=a option which I thought was >>> supposed to make nnedi only use one of the two fields, but the output is >>> still 59.94 fps. Is this a bug or

[FFmpeg-user] how to change the timecode without new encodig - some ideas and questions

2022-05-01 Thread Götz Reinicke
Hi, I do have a bunch of Panasonic EVA1 clips, H.246 MOV and I like to change the timecode to a different value. Googling gave me some hint: ffmpeg -i file.MOV -map 0 -map -0:d -vcodec copy -timecode 16:21:08:10 fiel_newTC.MOV That command runs, but changes somehow the file: a) The size is