ffmpeg vs ffprobe frame count speed

[Anime4000]

I comparing FFmpeg vs FFprobe to get total frame given input,
I found FFmpeg (using null output) count frame much faster then FFprobe,
So, there are way to count frame faster in FFprobe?

[poisondeathray]

what commandline are you using? ffmpeg will decode a/v, and be much slower than ffprobe (you can speed it up slightly if you disable audio -an)

you can use ffprobe to output the framecount directly, but they are not decoded, thus essentially instant. (In theory this might be less accurate than decoding frame by frame, so it depends what context you need this for)

ffprobe -i "INPUT.ext" -select_streams v:0 -show_entries "stream=nb_frames"

[ndjamena]

Have you tried using the threads switch?

ffprobe -threads %NUMBER_OF_PROCESSORS%*1.5 -v quiet -pretty -print_format csv -select_streams v:0 -count_frames -show_entries "stream=nb_frames,nb_read_frames"

-That's not mine, I stole it from another thread-

[Anime4000]

Command-line i use is:

ffmpeg.exe -i "D:\Users\Anime4000\Videos\Raptr\Company of Heroes 2\2015_12_08_22_05_18-man.mp4" -map 0:0 -vcodec copy -f null - 2> gg.txt

Result: http://pastebin.com/CWmnikpz

I can say using ffprobe very-very slow, it took 10 minute! meanwhile ffmpeg.exe just 33 second!

[poisondeathray]

When you use -vcodec copy, the frames are not decoded or counted individually, thus very fast. Remove the -vcodec copy and it will decode and count them frame by frame

IF you use ffprobe in the mode described above, it will be as fast or faster than ffmpeg. That's equivalent to -vcodec copy (ie. in that mode it doesn't decode frames individually) .

The faster method for either ffmpeg or ffprobe, in theory can give you errors , as it doesn't count them frame by frame. So again, it depends on the context or why you are doing this

[Anime4000]

ffprobe -i "INPUT.ext" -select_streams v:0 -show_entries "stream=nb_frames"

This command, some MP4s did provide total frame, so very fast since no -count_frames

ffprobe -threads %NUMBER_OF_PROCESSORS%*1.5 -v quiet -pretty -print_format csv -select_streams v:0 -count_frames -show_entries "stream=nb_frames,nb_read_frames"

This works fine~

This because I ran multi pass x265, when I give wrong frame count, x265 cannot continue...

[crazybytes]

Best method:

Cmd ->

ffprobe.exe -v error -select_streams v:0 -show_entries stream=r_frame_rate,duration -of default=nw=1 "d:\movies\The.Matrix.1999.1080p.BrRip.x264.YIFY.d ut.mp4"

Result ->

r_frame_rate=24000/1001
duration=8177.794625

Calculation ->

Frames=24000/1001*8177.794625=196071

Proof ->

ffmpeg -i "d:\movies\The.Matrix.1999.1080p.BrRip.x264.YIFY.d ut.mp4" -f null /dev/null
ffmpeg version N-92938-g0aaaca25e0-ffmpeg-windows-pacman Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8.2.0 (GCC)
configuration: --pkg-config=pkg-config --pkg-config-flags=--static --extra-version=ffmpeg-windows-pacman --enable-version3 --disable-debug --disable-w32threads --arch=x86_64 --target-os=mingw32 --cross-prefix=/opt/sandbox/cross_compilers/mingw-w64-x86_64/bin/x86_64-w64-mingw32- --enable-libcaca --enable-gray --enable-libtesseract --enable-fontconfig --enable-gmp --enable-gnutls --enable-libass --enable-libbluray --enable-libbs2b --enable-libflite --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libzimg --enable-libzvbi --enable-libmysofa --enable-libaom --enable-libopenjpeg --enable-libopenh264 --enable-liblensfun --enable-nvenc --enable-nvdec --extra-libs=-lm --extra-libs=-lpthread --extra-cflags=-DLIBTWOLAME_STATIC --extra-cflags=-DMODPLUG_STATIC --extra-cflags=-DCACA_STATIC --enable-amf --enable-libmfx --enable-gpl --enable-avisynth --enable-frei0r --enable-filter=frei0r --enable-librubberband --enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxvid --enable-libxavs --enable-avresample --extra-cflags='-march=core2' --extra-cflags=-O2 --enable-static --disable-shared --prefix=/opt/sandbox/cross_compilers/mingw-w64-x86_64/x86_64-w64-mingw32 --enable-nonfree --enable-decklink --enable-libfdk-aac
libavutil 56. 25.100 / 56. 25.100
libavcodec 58. 43.100 / 58. 43.100
libavformat 58. 25.100 / 58. 25.100
libavdevice 58. 6.101 / 58. 6.101
libavfilter 7. 47.100 / 7. 47.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 4.100 / 5. 4.100
libswresample 3. 4.100 / 3. 4.100
libpostproc 55. 4.100 / 55. 4.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'd:\movies\The.Matrix.1999.1080p.BrRip.x264.YIFY.d ut.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.25.100
Duration: 02:16:17.91, start: 0.000000, bitrate: 2497 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x800 [SAR 1:1 DAR 12:5], 2397 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 93 kb/s (default)
Metadata:
handler_name : GPAC ISO Audio Handler
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> wrapped_avframe (native))
Stream #0:1 -> #0:1 (aac (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
Output #0, null, to '/dev/null':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.25.100
Stream #0:0(und): Video: wrapped_avframe, yuv420p, 1920x800 [SAR 1:1 DAR 12:5], q=2-31, 200 kb/s, 23.98 fps, 23.98 tbn, 23.98 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc58.43.100 wrapped_avframe
Stream #0:1(und): Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s (default)
Metadata:
handler_name : GPAC ISO Audio Handler
encoder : Lavc58.43.100 pcm_s16le

HERE!!! ->

frame=196071 fps=331 q=-0.0 Lsize=N/A time=02:16:17.90 bitrate=N/A speed=13.8x

video:102631kB audio:1408772kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
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