I am trying to convert a video to images.
ffmpeg -i foo.avi -r 1 -s WxH -f image2 foo-%03d.jpeg
But every time it shows error in Windows CMD :
Invalid frame size: WxH.
The full Error code is posted below
C:\Users\HP\Desktop\New folder>ffmpeg -i "C:\Users\HP\Desktop\foo.mp4" -r 1 -s WxH -f image2 afoo-%03d.jpeg
ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 7.2.0 (GCC)
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\HP\Desktop\foo.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.40.101
Duration: 00:00:45.05, start: 0.000000, bitrate: 1163 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 854x480 [SAR 1:1 DAR 427:240], 1032 kb/s, 25.02 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
Metadata:
handler_name : SoundHandler
Invalid frame size: WxH.I tried with multiple video formats and video sizes but still not working :(
I've checked whether it is really 'x' and I typed it by hand. This question implies about the 'x' problem and mine is different.
As Gyan mentioned, you need to specify the actual width (W) and (x) height (H).
You should also update your ancient FFMPEG version.
ffmpeg -i foo.avi -r 1 -s WxH -f image2 foo-%03d.jpeg
should be changed to (assuming you want 1280x720):
ffmpeg -i foo.avi -r 1 -s 1280x720 -f image2 foo-%03d.jpeg
You can also specify the size like this:
ffmpeg -i foo.avi -r 1 -filter:v "scale=1280:720" -f image2 foo-%03d.jpeg
If you want to Not force both a width And height and keep the aspect ratio you could use:
ffmpeg -i foo.avi -r 1 -filter:v "scale=1280:-2" -f image2 foo-%03d.jpeg
ffmpeg -i foo.avi -r 1 -filter:v "scale=-2:720" -f image2 foo-%03d.jpeg
The -2 will auto resize that dimension (W or H) to the correct size (Mod 2) to maintain the aspect ratio.
This page may be worth reading: FFMPEG Scaling