On 10/08/15 11:53, Andy Furniss wrote: > MrNice wrote: > >> I use the following command. I am not sure if the output file is >> interlaced because mediainfo says nothing about that for FFV1 >> encoder. >> >> ./ffmpeg -debug 1 -f pulse -ar 44100 -ac 2 -channel_layout stereo >> -thread_queue_size 512 -i alsa_input.pci-0000_00_14.2.analog-stereo >> -f v4l2 -ts mono2abs -channel 1 -video_size 720x576 -pix_fmt yuyv422 > > Different issue, but as you are using 422 if you ever want to make a dvd > or something that needs 420 you will need to be very careful to make > sure you do an interlaced aware conversion. > > -vf scale=interl=1,format=pix_fmts=yuv420p > > for example. > > Historically at least there are potential issues with this. > > IIRC it just won't(didn't) work if you use > > ffmpeg ..... -target pal-dvd -flags +ilme+ildct ... as a scaler gets > auto inserted and does a progressive conversion even if you try to > specify interlaced. > > This may not apply now - or there may have always been a way I didn't > find. (what I did was avoid using target of course, but that meant > working out the other params the target set). > > >
I did a test with FFV1 input file and x264 output: ./ffmpeg -debug 1 -i /Store3/Test/t_20150810_1016.mkv -c:v libx264 -preset slow -qp 0 -flags +ilme+ildct -aspect 4:3 -pix_fmt yuv422p -c:a wmav2 /Store3/Test/test2_interlaced.mkv ffprobe says: interlaced_frame=1 Very good, I keep FFV1 encoder for intermediate files I'll no bake dvds but record mp4 or mkv files in dvd supports. Many thanks to all of you _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
