Hello, It seems there is a bug in zoompan. If we use an overlay filter on the output of zoompan, the zoom progress stops at 2 seconds whatever the 'd' parameter of the zoompan. If we remove the overlay fliter, it works.
Here is the command; ffmpeg -loglevel info -y -f lavfi -r 25 -i color=black -loop 1 -r 25 -i pic.png -filter_complex " \ [0:v]scale=640x480[background]; [\ 1:v]scale=640x480,zoompan=z='zoom+0.001':x='ow/2':y='oh/2':s=640x480:d=250,setpts=PTS-STARTPTS+1/TB [vshot2]; \ [background][vshot2] overlay[vfinal]" \ -strict -2 -c:v h264 -b:a 96k -aspect 640/480 -pix_fmt yuv420p -t 10 -map [vfinal] final.mp4 Here are some logs: ffmpeg version N-41370-gb4d8724- http://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2014 the FFmpeg developers built on Nov 24 2014 00:39:29 with gcc 4.8 (Debian 4.8.3-13) configuration: --enable-gpl --enable-version3 --disable-shared --disable-debug --enable-runtime-cpudetect --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-fontconfig --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --enable-libopus --disable-ffserver --enable-libass --enable-gnutls --cc=gcc-4.8 libavutil 54. 15.100 / 54. 15.100 libavcodec 56. 13.100 / 56. 13.100 libavformat 56. 15.100 / 56. 15.100 libavdevice 56. 3.100 / 56. 3.100 libavfilter 5. 2.103 / 5. 2.103 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 3.100 / 53. 3.100 ... [swscaler @ 0x9fe99e0] Warning: data is not aligned! This can lead to a speedloss [Parsed_overlay_4 @ 0xa044e40] [framesync @ 0xa044ee4] Buffer queue overflow, dropping. Last message repeated 184 times [Parsed_overlay_4 @ 0xa044e40] [framesync @ 0xa044ee4] Buffer queue overflow, dropping. Last message repeated 185 times rgds Jean _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
