[FFmpeg-user] Pullup old MPEG-2

[Laine Lee]

Thanks.

On 12/18/15, 7:05 PM, "ffmpeg-user on behalf of Carl Eugen Hoyos" <ffmpeg-user-bounces at ffmpeg.org on behalf of cehoyos at ag.or.at> wrote:

Laine Lee <llee040 <at> sbcglobal.net> writes:

 -vf "fieldmatch=order=tff:combmatch=full,fps=24000/1001" 

Where did you find this?

http://ffmpeg-users.933282.n4.nabble.com/FFMpeg-problem-using-fieldmatch-and-decimate-filters-to-IVTC-td4665052i20.html#a4665298

I need to provide a different set of excerpts, and ask my question again, because applying the command, “ffmpeg -i 2023_telecine_source.mpg -pix_fmt yuv420p -c:v libx264 -preset slower -tune film -vf "fieldmatch=order=tff:combmatch=full,fps=24000/1001" -c:a libfdk_aac -b:a 320k -crf 18 -x264opts keyint=40:bitrate=2100:qpmin=8:qpmax=28:qpstep=4 2023_ffmpeg_telecine.m4v” to the source clip I previously provided (https://dl.dropboxusercontent.com/u/42718751/2023_telecine_source.zip) correctly transcodes it.

So here goes.

Here’s my source excerpt:
https://dl.dropboxusercontent.com/u/42718751/2024_telecine_source.zip

Here’s the correctly converted excerpt using mencoder with the command line, "mencoder 2024_telecine_source.mpg -o 2024_mencoder_detelecine.m4v -of lavf -lavfopts format=mp4 -alang en -aspect 4:3 -demuxer lavf -vf filmdint=fast=0/sad_thres=2048,fspp,softskip -mc 0 -noskip  -oac faac -faacopts br=320:mpeg=4:object=2:raw  -ofps 24000/1001 -ovc x264 -x264encopts crf=28:bitrate=2000:nocabac:level_idc=31:bframes=0:global_header:threads=auto:subq=6:frameref=2:partitions=all:trellis=1:chroma_me:qcomp=0.7:qp_step=4:me=umh:weightp=0:8x8dct=0:direct_pred=auto“:
https://dl.dropboxusercontent.com/u/42718751/2024_mencoder_detelecine.zip

Here’s the incorrectly converted excerpt using ffmpeg with the command line, "ffmpeg -i 2024_telecine_source.mpg -pix_fmt yuv420p -c:v libx264 -preset slower -tune film -vf "fieldmatch=order=tff:combmatch=full,fps=24000/1001" -c:a libfdk_aac -b:a 320k -crf 18 -x264opts keyint=40:bitrate=2100:qpmin=8:qpmax=28:qpstep=4 2024_ffmpeg_detelecine.m4v”:
https://dl.dropboxusercontent.com/u/42718751/2024_ffmpeg_detelecine.zip

Please tell me how ffmpeg may be used to correctly detelecine the source so that the output compares favorably with the mencoder output. Thanks.

Laine Lee