I'm running ffmpeg xxxx on fedora 20 64 bit. I've been using the following command with success to encode a (live camera) dv input to rtmp stream :
# dvgrab -format dv1 - | ffmpeg -deinterlace -f dv -i - -f flv -vcodec flv -s 320x240 -r 10 -b:v 1000k -vcodec libx264 -preset veryfast -crf 25 -maxrate 3000k -bufsize 6000k -g 20 -c:a libfdk_aac -ac 1 -ab 32k -ar 22050 'rtmp://xxx.xxx.xxx.xxx:1935/live/livestream1' however I'd like to make an mp4 recording of the stream as well, so following the instructions at https://trac.ffmpeg.org/wiki/Creating%20multiple%20outputs I've tried the following command # dvgrab -format dv1 - | ffmpeg -deinterlace -f dv -i - -f flv -vcodec flv -s 320x240 -r 10 -b:v 1000k -vcodec libx264 -preset veryfast -crf 25 -maxrate 3000k -bufsize 6000k -g 20 -c:a libfdk_aac -ac 1 -ab 32k -ar 22050 -f tee -map 0:v -map 0:a 'recording.mp4|rtmp://xxx.xxx.xxx.xxx:1935/live/livestream1' but it doesn't work, I get: 'Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument' this is the console output from the above command: ---------------------- $ dvgrab -format dv1 - | ffmpeg -deinterlace -f dv -i - -f flv -vcodec flv -s 320x240 -r 10 -b:v 1000k -vcodec libx264 -preset veryfast -crf 25 -maxrate 3000k -bufsize 6000k -g 20 -c:a libfdk_aac -ac 1 -ab 32k -ar 22050 -f tee -map 0:v -map 0:a 'recording.mp4|rtmp://xxx.xxx.xxx.xxx:1935/live/livestream1' ffmpeg version 2.5.3 Copyright (c) 2000-2015 the FFmpeg developers built on Jan 22 2015 21:08:41 with gcc 4.8.3 (GCC) 20140911 (Red Hat 4.8.3-7) configuration: --prefix=/home/user/ffmpeg_build --extra-cflags=-I/home/user/ffmpeg_build/include --extra-ldflags=-L/home/user/ffmpeg_build/lib --bindir=/home/user/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libx264 --enable-libfreetype --enable-libfontconfig libavutil 54. 15.100 / 54. 15.100 libavcodec 56. 13.100 / 56. 13.100 libavformat 56. 15.102 / 56. 15.102 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 Found AV/C device with GUID 0x002011011501d694 Waiting for DV... Capture Started Input #0, dv, from 'pipe:': Duration: N/A, start: 0.000000, bitrate: 28800 kb/s Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 16:15 DAR 4:3], 28800 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s [libx264 @ 0x3638960] using SAR=1/1 [libx264 @ 0x3638960] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64 [libx264 @ 0x3638960] profile High, level 3.0 [flv @ 0x3c1dae0] Codec for stream 0 does not use global headers but container format requires global headers [flv @ 0x3c1dae0] Codec for stream 1 does not use global headers but container format requires global headers [NULL @ 0x3c27440] Unable to find a suitable output format for 'rtmp://xxx.xxx.xxx.xxx:1935/live/livestream1' Output #0, tee, to 'recording.mp4|rtmp://xxx.xxx.xxx.xxx:1935/live/livestream1': Metadata: encoder : Lavf56.15.102 Stream #0:0: Video: h264 (libx264), yuv420p, 320x240 [SAR 1:1 DAR 4:3], q=-1--1, 1000 kb/s, 10 fps, 10 tbn, 10 tbc Metadata: encoder : Lavc56.13.100 libx264 Stream #0:1: Audio: aac (libfdk_aac), 22050 Hz, mono, s16, 32 kb/s Metadata: encoder : Lavc56.13.100 libfdk_aac Stream mapping: Stream #0:0 -> #0:0 (dvvideo (native) -> h264 (libx264)) Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (libfdk_aac)) Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument -------------------------- can anyone see what the problem is here? I've tried different file extensions on the file name but no joy. Thanks for any pointers. _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
