Hello, Why it is not possible to use overlay filter with negative y coordinates? It works when x is negative but not y. How this can be fixed?
stack trace: ffmpeg -i in3.flv -vfilters "[in]setpts=PTS-STARTPTS,[T1]overlay=-20+13*atan(N/40):-20+14*atan(N)[out];movie=0:flv:in2.flv,scale=487:365,setpts=PTS-STARTPTS[T1]" out.avi FFmpeg version SVN-r20390, Copyright (c) 2000-2009 Fabrice Bellard, et al. built on Nov 3 2009 21:51:11 with gcc 4.4.1 configuration: --enable-libmp3lame --enable-libvorbis --disable-mmx --enable-shared --enable-nonfree --enable-libtheora --enable-avfilter-lavf --enable-avfilter libavutil 50. 3. 0 / 50. 3. 0 libavcodec 52.37. 1 / 52.37. 1 libavformat 52.39. 2 / 52.39. 2 libavdevice 52. 2. 0 / 52. 2. 0 libavfilter 1. 6. 0 / 1. 6. 0 libswscale 0. 7. 1 / 0. 7. 1 Seems stream 0 codec frame rate differs from container frame rate: 60.00 (60/1) -> 29.97 (30000/1001) Input #0, flv, from 'in3.flv': Duration: 00:00:30.80, start: 0.000000, bitrate: 414 kb/s Stream #0.0: Video: h264, yuv420p, 480x360 [PAR 1:1 DAR 4:3], 414 kb/s, 29.97 tbr, 1k tbn, 60 tbc Stream #0.1: Audio: aac, 44100 Hz, stereo, s16 Metadata duration : 31 starttime : 0 totalduration : 31 width : 480 height : 360 videodatarate : 404 audiodatarate : 107 totaldatarate : 513 framerate : 30 bytelength : 2009597 canseekontime : true sourcedata : B4A7D0AC6 purl : pmsg : Output #0, avi, to 'out.avi': Stream #0.0: Video: mpeg4, yuv420p, 480x360 [PAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 29.97 tbn, 29.97 tbc Stream #0.1: Audio: mp2, 44100 Hz, stereo, s16, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press [q] to stop encoding *** glibc detected *** ffmpeg: munmap_chunk(): invalid pointer: 0x00000000009e0190 *** ======= Backtrace: ========= /lib/libc.so.6[0x7fefb158ddd6] /usr/local/lib/libavfilter.so.1(avfilter_default_free_video_buffer+0xc)[0x7fefb2f1bb3c] /usr/local/lib/libavfilter.so.1(avfilter_unref_pic+0x1a)[0x7fefb2f1a91a] ffmpeg[0x40893d] ffmpeg[0x40d094] ffmpeg[0x40ddb1] /lib/libc.so.6(__libc_start_main+0xfd)[0x7fefb1536abd] ffmpeg[0x404859] ======= Memory map: ======== 00400000-00415000 r-xp 00000000 08:01 67199 /usr/local/bin/ffmpeg 00614000-00616000 r--p 00014000 08:01 67199 /usr/local/bin/ffmpeg 00616000-00617000 rw-p 00016000 08:01 67199 /usr/local/bin/ffmpeg 00617000-0061c000 rw-p 00000000 00:00 0 006d2000-00a93000 rw-p 00000000 00:00 0 [heap] 7fefb03df000-7fefb03f5000 r-xp 00000000 08:01 839 .... _______________________________________________ FFmpeg-soc mailing list FFmpeg-soc@mplayerhq.hu https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-soc
