[FFmpeg-user] does -vdt option work?
aviad rozenhek
aviadr1 at gmail.com
Mon Jun 24 20:05:12 CEST 2013
I'm trying to extract images from input file, and some processing power by
only looking at keyframes, using the -vdt:v 32 option
however I'm seeing that these two command lines take exactly the same time
and output exactly the same frames.
am I doing something wrong?
ffmpeg -vdt:v 32 -i espn.ts -vf fps=1 espn_%09d.jpg
vs
ffmpeg -i espn.ts -vf fps=1 espn_%09d.jpg
attached is uncut output
--
Aviad Rozenhek
-------------- next part --------------
ffmpeg version N-54161-gc329713 Copyright (c) 2000-2013 the FFmpeg developers
built on Jun 23 2013 14:19:12 with gcc 4.7.3 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 37.101 / 52. 37.101
libavcodec 55. 16.100 / 55. 16.100
libavformat 55. 9.100 / 55. 9.100
libavdevice 55. 2.100 / 55. 2.100
libavfilter 3. 77.101 / 3. 77.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[h264 @ 024c9a00] non-existing PPS referenced
[h264 @ 024c9a00] non-existing PPS 0 referenced
[h264 @ 024c9a00] decode_slice_header error
[h264 @ 024c9a00] no frame!
[mpegts @ 024cb9a0] Stream #3: not enough frames to estimate rate; consider increasing probesize
[mpegts @ 024cb9a0] Could not find codec parameters for stream 3 (Unknown: none ([134][0][0][0] / 0x0086)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[NULL @ 024ccf60] start time is not set in estimate_timings_from_pts
[mpegts @ 024cb9a0] PES packet size mismatch
Input #0, mpegts, from 'espn.ts':
Duration: 00:01:17.25, start: 64378.226244, bitrate: 18831 kb/s
Program 1
Stream #0:0[0x20]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn, 119.88 tbc
Stream #0:1[0x21](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 448 kb/s
Stream #0:2[0x22](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 192 kb/s
Stream #0:3[0x31]: Unknown: none ([134][0][0][0] / 0x0086)
Output #0, image2, to 'espn_%09d.jpg':
Metadata:
encoder : Lavf55.9.100
Stream #0:0: Video: mjpeg, yuvj420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 1 tbc
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> mjpeg)
Press [q] to stop, [?] for help
[h264 @ 04ef1860] Missing reference picture, default is 0
[h264 @ 04ef1860] decode_slice_header error
[h264 @ 04ef1c40] Missing reference picture, default is 0
[h264 @ 04ef1c40] decode_slice_header error
[h264 @ 04ef2020] reference picture missing during reorder
[h264 @ 04ef2020] Missing reference picture, default is 0
[h264 @ 04ef2020] decode_slice_header error
[h264 @ 04ef2800] mmco: unref short failure
[h264 @ 04ef2020] mmco: unref short failure
frame= 3 fps=0.0 q=0.0 size=N/A time=00:00:02.00 bitrate=N/A
frame= 7 fps=7.0 q=0.0 size=N/A time=00:00:06.00 bitrate=N/A
frame= 10 fps=6.6 q=0.0 size=N/A time=00:00:09.00 bitrate=N/A
frame= 14 fps=7.0 q=0.0 size=N/A time=00:00:13.00 bitrate=N/A
frame= 17 fps=6.8 q=0.0 size=N/A time=00:00:16.00 bitrate=N/A
frame= 20 fps=6.6 q=0.0 size=N/A time=00:00:19.00 bitrate=N/A
frame= 24 fps=6.8 q=0.0 size=N/A time=00:00:23.00 bitrate=N/A
frame= 27 fps=6.7 q=0.0 size=N/A time=00:00:26.00 bitrate=N/A
frame= 31 fps=6.9 q=0.0 size=N/A time=00:00:30.00 bitrate=N/A
frame= 34 fps=6.8 q=0.0 size=N/A time=00:00:33.00 bitrate=N/A
frame= 38 fps=6.9 q=0.0 size=N/A time=00:00:37.00 bitrate=N/A
frame= 42 fps=7.0 q=0.0 size=N/A time=00:00:41.00 bitrate=N/A
frame= 45 fps=6.9 q=0.0 size=N/A time=00:00:44.00 bitrate=N/A
frame= 48 fps=6.8 q=0.0 size=N/A time=00:00:47.00 bitrate=N/A
frame= 51 fps=6.8 q=0.0 size=N/A time=00:00:50.00 bitrate=N/A
frame= 55 fps=6.8 q=0.0 size=N/A time=00:00:54.00 bitrate=N/A
frame= 58 fps=6.8 q=0.0 size=N/A time=00:00:57.00 bitrate=N/A
frame= 61 fps=6.7 q=0.0 size=N/A time=00:01:00.00 bitrate=N/A
frame= 65 fps=6.8 q=0.0 size=N/A time=00:01:04.00 bitrate=N/A
frame= 68 fps=6.8 q=0.0 size=N/A time=00:01:07.00 bitrate=N/A
frame= 71 fps=6.7 q=0.0 size=N/A time=00:01:10.00 bitrate=N/A
frame= 75 fps=6.8 q=0.0 size=N/A time=00:01:14.00 bitrate=N/A
error while decoding MB 56 36, bytestream (-6)
[h264 @ 04ef1c40] concealing 713 DC, 713 AC, 713 MV errors in B frame
frame= 77 fps=6.8 q=0.0 Lsize=N/A time=00:01:17.00 bitrate=N/A
video:6504kB audio:0kB subtitle:0 global headers:0kB muxing overhead -100.000330%
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