2018-09-29 22:46 GMT+02:00, sean darcy <[email protected]>: > On 9/28/18 7:29 PM, Carl Eugen Hoyos wrote: >> 2018-09-28 20:58 GMT+02:00, sean darcy <[email protected]>: >> >>> Also, I used ffprobe: >>> >>> ffprobe -show_frames -select_streams v -i in.mpg 2>&1 | grep -c >>> interlaced_frame=1 >>> 2052 >>> ffprobe -show_frames -select_streams v -i in.mpg 2>&1 | grep -c >>> interlaced_frame=0 >>> 30347 >>> >>> This means there are at least some interlaced frames >> >> No, unfortunately ffprobe cannot tell you (the information above >> is mostly unrelated to the question if the content is interlaced, >> telecined or progressive). >> >> Either use the idet filter or do a visual inspection. >> >> Carl Eugen >> _______________________________________________ > > Never used idet filter before, so don't know how to make use of the info. > > ffmpeg -vf idet -frames:v 5000 -an -f rawvideo -y /dev/null -i in.mpg > ffmpeg version git-snapshot-20180928-RPMFusion Copyright (c) 2000-2018 > the FFmpeg developers > built with gcc 8 (GCC) > configuration: --prefix=/usr --bindir=/usr/bin > --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg > --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 > --optflags='-O2 -ffast-math -march=native -ftree-vectorize > -fomit-frame-pointer -pipe -fPIC' --enable-bzlib --disable-crystalhd > --enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls > --enable-ladspa --enable-libass --enable-libbluray --enable-libcdio > --enable-libfdk-aac --enable-nonfree --enable-indev=jack > --enable-libfreetype --enable-libfribidi --enable-libgsm > --enable-libmp3lame --enable-openal --enable-opencl --disable-libopencv > --enable-opengl --enable-libopenjpeg --enable-libopus --enable-libpulse > --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis > --enable-libv4l2 --enable-libvpx --enable-libwebp --enable-libx264 > --enable-libx265 --enable-avfilter --enable-postproc --enable-pthreads > --disable-static --enable-shared --enable-gpl --enable-version3 > --enable-nonfree --disable-debug --enable-stripping > --shlibdir=/usr/lib64 --enable-runtime-cpudetect > libavutil 56. 19.101 / 56. 19.101 > libavcodec 58. 31.101 / 58. 31.101 > libavformat 58. 18.103 / 58. 18.103 > libavdevice 58. 4.104 / 58. 4.104 > libavfilter 7. 33.100 / 7. 33.100 > libswscale 5. 2.100 / 5. 2.100 > libswresample 3. 2.100 / 3. 2.100 > libpostproc 55. 2.100 / 55. 2.100 > [mpeg2video @ 0x1eef200] Invalid frame dimensions 0x0. > Last message repeated 10 times > Input #0, mpeg, from 'in.mpg': > Duration: 26:09:34.50, start: 1305.384367, bitrate: 91 kb/s > Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, > progressive), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 29.97 fps, > 59.94 tbr, 90k tbn, 59.94 tbc > Stream #0:1[0x81]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s > Stream #0:2[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s > Stream #0:3[0x1bf]: Data: dvd_nav_packet > Stream #0:4[0x22]: Subtitle: dvd_subtitle > Stream #0:5[0x21]: Subtitle: dvd_subtitle > Stream #0:6[0x20]: Subtitle: dvd_subtitle > Stream mapping: > Stream #0:0 -> #0:0 (mpeg2video (native) -> rawvideo (native)) > Press [q] to stop, [?] for help > Output #0, rawvideo, to '/dev/null': > Metadata: > encoder : Lavf58.18.103 > Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x480 > [SAR 8:9 DAR 4:3], q=2-31, 124291 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc > Metadata: > encoder : Lavc58.31.101 rawvideo > More than 1000 frames duplicated= 2191360kB time=00:02:24.44 > bitrate=124280.6kbits/s dup=867 drop=0 speed=72.2x > frame= 5000 fps=2162 q=-0.0 Lsize= 2531250kB time=00:02:46.83 > bitrate=124291.7kbits/s dup=1001 drop=0 speed=72.1x > video:2531250kB audio:0kB subtitle:0kB other streams:0kB global > headers:0kB muxing overhead: 0.000000% > [Parsed_idet_0 @ 0x21f7dc0] Repeated Fields: Neither: 4000 Top: 0 > Bottom: 0 > [Parsed_idet_0 @ 0x21f7dc0] Single frame detection: TFF: 0 BFF: > 0 Progressive: 3894 Undetermined: 106 > [Parsed_idet_0 @ 0x21f7dc0] Multi frame detection: TFF: 0 BFF: 0 > Progressive: 4000 Undetermined: 0 > > As I read this, the idet filter only saw 4000 out of the 5000 frames, of > which 106 couldn't be classified. What about the 1001 duplicated frames ?
This indicates soft-telecine of progressive original. Please test with output option "-r 24000/1001". If that leads to (many) duplicated and dropped frames, there are ways to work-around iirc. Carl Eugen _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
