Doing some screencaps in VLC but its x264 transcoder is apparently broken on Win8.1 x64 systems, including my own. No problem, I figure: I'll just save the video in raw format (I'm only capturing a 554x65 area so even with raw video the file isn't too big) & transcode it to x264 using ffmpeg. But no...
C:\.DATA>ffprobe test1.avi ffprobe version N-73696-g8250943 Copyright (c) 2007-2015 the FFmpeg developers built with gcc 4.9.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca -- enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena ble-decklink --enable-zlib libavutil 54. 28.100 / 54. 28.100 libavcodec 56. 49.101 / 56. 49.101 libavformat 56. 40.101 / 56. 40.101 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 22.101 / 5. 22.101 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.101 / 1. 2.101 libpostproc 53. 3.100 / 53. 3.100 [avi @ 00000000047d5300] Could not find codec parameters for stream 0 (Video: no ne (RV32 / 0x32335652), none, 540x65, 34097 kb/s): unknown codec Consider increasing the value for the 'analyzeduration' and 'probesize' options test1.avi: Operation not permitted So it looks like ffmpeg can't figure out the file format. I tried forcing "rawvideo" input format with the -f switch & got this: C:\.DATA>ffprobe -f rawvideo -i test1.avi ffprobe version N-73696-g8250943 Copyright (c) 2007-2015 the FFmpeg developers built with gcc 4.9.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca -- enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena ble-decklink --enable-zlib libavutil 54. 28.100 / 54. 28.100 libavcodec 56. 49.101 / 56. 49.101 libavformat 56. 40.101 / 56. 40.101 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 22.101 / 5. 22.101 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.101 / 1. 2.101 libpostproc 53. 3.100 / 53. 3.100 [IMGUTILS @ 000000000023fb50] Picture size 0x0 is invalid [IMGUTILS @ 000000000023f680] Picture size 0x0 is invalid [rawvideo @ 00000000047053e0] Could not find codec parameters for stream 0 (Vide o: rawvideo (I420 / 0x30323449), yuv420p, -4 kb/s): unspecified size Consider increasing the value for the 'analyzeduration' and 'probesize' options test1.avi: Operation not permitted From this point I tried specifying the video frame size with -s, but that didn't work. Any ideas as to how to tell ffmpeg how to read this, or am I going down the wrong path? VLC says the raw format is RV32 & ffmpeg seemed to be able to get the video size correct on that 1st try without the -f switch, so the "-f rawvideo" might be leading ffmpeg astray? Thanks Bob _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
