Guessed Channel Layout for Input Stream #0.4 : mono Guessed Channel Layout for Input Stream #0.3 : mono Guessed Channel Layout for Input Stream #0.2 : stereo File position after avformat_find_stream_info() is 746703 File position before avformat_find_stream_info() is 8447 Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100 Report written to "ffmpeg-20121219-002121.log"įfmpeg -report -y -i fcp_capture.mov -c:v copy -c:a copy -r ntsc output.movįfmpeg version 1.0.git Copyright (c) 2000-2012 the FFmpeg developersīuilt on 23:49:10 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)Ĭonfiguration: -prefix=/usr/local/Cellar/ffmpeg/HEAD -enable-shared -enable-gpl -enable-version3 -enable-nonfree -enable-hardcoded-tables -cc=cc -host-cflags= -host-ldflags= -enable-libx264 -enable-libfaac -enable-libmp3lame -enable-libxvid -enable-ffplay With the output the first frame is 00:59:14 24 but the second is 00:59:14 28. When the input is opened in QuickTime or FCP the first frame of the sample is 00:59:14 24 and the second is 00:59:14 25. When I try to copy the tracks of this input to an output quicktime file the timecode track in the output does not match the input's timecode track.
By reading the sample-to-time table in the video trak the first frame has a duration of 401/2997 and the rest have frame durations of 100/2997. I'm attaching a sample produced by using FCP to capture two frames from a tape. When I try to convert these files in ffmpeg while preserving timecode the results are unexpected. Video capture in Final Cut Pro often creates variable frame rate QuickTime files (where only the first and sometimes last frame deviate have frame durations that deviate from the rest).
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