Inverse telecine filter does not work properly under ffmpeg source
Posted: Fri Jul 24, 2020 3:20 am
With MC-0.8.61,when converting 3,2-pulldowned mpeg2-aac TS file(1920x1080,29.97i) into H.264/ac3(1920x1080,23.976p) m2ts file,
inverse telecine filter works properly if input source is Mencoder. Whereas, it does not work properly when ffmpeg is used for input source.
In telecined 29.97fps TS file, frame sequence is described as (1a1b)(2a2b)(2a3b)(3a4b)(4a4b)......
For example, under Mencoder gives 23.976fps 12341234--- product, whereas under ffmpeg gives 23.976fps 12441244--- product.
Parameter settings are below,
video source decoder: Mencoder or ffmpeg
video output format: H.264
video encoder: x.264
video out Rate mode : AVR
audio source decoder: Auto(Default)
audio output format: AC-3
audio encoder: Auto(ffmpeg)
output container: M2TS
Picture Effect from: Source_Filters
IVTC mode select: File -> Settings -> Video_filters -> Inverse_Telecine_Filter -> pullup
As to conversion speed, maybe from the difference of multithread utilyzation, Mencoder is very slow evenif 16core-32thread system is employed.
In typically case, ffmpeg gives 4.0x, Mencoder gives 1.6x. Mencoder gives much slower speed !
Then, I want to get proper imverse-telecined product with ffmpeg, with reasonable speed.
Is there any necessary additional setting ?
inverse telecine filter works properly if input source is Mencoder. Whereas, it does not work properly when ffmpeg is used for input source.
In telecined 29.97fps TS file, frame sequence is described as (1a1b)(2a2b)(2a3b)(3a4b)(4a4b)......
For example, under Mencoder gives 23.976fps 12341234--- product, whereas under ffmpeg gives 23.976fps 12441244--- product.
Parameter settings are below,
video source decoder: Mencoder or ffmpeg
video output format: H.264
video encoder: x.264
video out Rate mode : AVR
audio source decoder: Auto(Default)
audio output format: AC-3
audio encoder: Auto(ffmpeg)
output container: M2TS
Picture Effect from: Source_Filters
IVTC mode select: File -> Settings -> Video_filters -> Inverse_Telecine_Filter -> pullup
As to conversion speed, maybe from the difference of multithread utilyzation, Mencoder is very slow evenif 16core-32thread system is employed.
In typically case, ffmpeg gives 4.0x, Mencoder gives 1.6x. Mencoder gives much slower speed !
Then, I want to get proper imverse-telecined product with ffmpeg, with reasonable speed.
Is there any necessary additional setting ?