On Wed, Dec 23, 2015 at 12:47 PM, Carl Eugen Hoyos <ceho...@ag.or.at> wrote: > Nicolas George <george <at> nsup.org> writes: > >> >> Le tridi 3 nivôse, an CCXXIV, Carl Eugen Hoyos a écrit : >> > yuv4mpegpipe used to accept (only) rawvideo as codec. >> > Bug reports indicate that changing this (without any >> > explanation) breaks usage of the muxer. >> >> Seems to work fine here. > > $ ffmpeg -f lavfi -i color -f yuv4mpegpipe -vcodec rawvideo /dev/null > ffmpeg version N-77434-gb18230e Copyright (c) 2000-2015 the FFmpeg developers > built with gcc 4.7 (SUSE Linux) > configuration: --enable-gpl > libavutil 55. 11.100 / 55. 11.100 > libavcodec 57. 19.100 / 57. 19.100 > libavformat 57. 20.100 / 57. 20.100 > libavdevice 57. 0.100 / 57. 0.100 > libavfilter 6. 21.100 / 6. 21.100 > libswscale 4. 0.100 / 4. 0.100 > libswresample 2. 0.101 / 2. 0.101 > libpostproc 54. 0.100 / 54. 0.100 > Input #0, lavfi, from 'color': > Duration: N/A, start: 0.000000, bitrate: N/A > Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x240 [SAR > 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc > File '/dev/null' already exists. Overwrite ? [y/N] > Not overwriting - exiting > cehoyos@lisbeth:~/test/cehoyos/FFmpeg> ./ffmpeg -f lavfi -i color -f > yuv4mpegpipe -vcodec rawvideo -y /dev/null > ffmpeg version N-77434-gb18230e Copyright (c) 2000-2015 the FFmpeg developers > built with gcc 4.7 (SUSE Linux) > configuration: --enable-gpl > libavutil 55. 11.100 / 55. 11.100 > libavcodec 57. 19.100 / 57. 19.100 > libavformat 57. 20.100 / 57. 20.100 > libavdevice 57. 0.100 / 57. 0.100 > libavfilter 6. 21.100 / 6. 21.100 > libswscale 4. 0.100 / 4. 0.100 > libswresample 2. 0.101 / 2. 0.101 > libpostproc 54. 0.100 / 54. 0.100 > Input #0, lavfi, from 'color': > Duration: N/A, start: 0.000000, bitrate: N/A > Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x240 [SAR > 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc > [yuv4mpegpipe @ 0x1f79e80] ERROR: Codec not supported. > Output #0, yuv4mpegpipe, to '/dev/null': > Metadata: > encoder : Lavf57.20.100 > Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x240 [SAR > 1:1 DAR 4:3], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc > Metadata: > encoder : Lavc57.19.100 rawvideo > Stream mapping: > Stream #0:0 -> #0:0 (rawvideo (native) -> rawvideo (native)) > Could not write header for output file #0 (incorrect codec parameters ?): > Invalid data found when processing input >
Just skip the vcodec entirely and it'll work magically, and faster as well - which is the reason for the change, it avoids a costly memcpy of every single video frame. - Hendrik _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
