Ahh nevermind, what you said works when I use the concat filter and not "ffmpeg -f concat -i file.txt...". I had assumed they would work the same
On Mon, Jul 17, 2017 at 4:37 PM, Tony Lambropoulos <[email protected]> wrote: > Hey Gyan, > I've ensured the SAR ratios and resolutions match up. The results are > still pretty funky, however. The first video last far longer than it's > supposed to and the second video is running in slow motion. Is there > nothing else that should match up? > > Here are the specs on the two input videos (first and second respectively): > > tony@ubuntu:/mnt/hgfs/vloop/transcoding$ ffmpeg -i /tmp/here2.mp4 > > ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers > > built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3) > > configuration: --prefix=/home/tony/ffmpeg_build > --pkg-config-flags=--static --extra-cflags=-I/home/tony/ffmpeg_build/include > --extra-ldflags=-L/home/tony/ffmpeg_build/lib --bindir=/home/tony/bin > --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype > --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis > --enable-libvpx --enable-libx264 --enable-nonfree > > libavutil 55. 34.101 / 55. 34.101 > > libavcodec 57. 64.101 / 57. 64.101 > > libavformat 57. 56.101 / 57. 56.101 > > libavdevice 57. 1.100 / 57. 1.100 > > libavfilter 6. 65.100 / 6. 65.100 > > libswscale 4. 2.100 / 4. 2.100 > > libswresample 2. 3.100 / 2. 3.100 > > libpostproc 54. 1.100 / 54. 1.100 > > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/here2.mp4': > > Metadata: > > major_brand : isom > > minor_version : 512 > > compatible_brands: isomiso2avc1mp41 > > encoder : Lavf57.56.101 > > Duration: 00:00:05.00, start: 0.000000, bitrate: 104 kb/s > > Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, > 720x260 [SAR 1:1 DAR 36:13], 93 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc > (default) > > Metadata: > > handler_name : VideoHandler > > Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, > stereo, fltp, 2 kb/s (default) > > Metadata: > > handler_name : SoundHandler > > At least one output file must be specified > > tony@ubuntu:/mnt/hgfs/vloop/transcoding$ ffmpeg -i /tmp/ > 6d41bcedfe4849cf5a9a244ce159d0bd.mp4 > > ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers > > built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3) > > configuration: --prefix=/home/tony/ffmpeg_build > --pkg-config-flags=--static --extra-cflags=-I/home/tony/ffmpeg_build/include > --extra-ldflags=-L/home/tony/ffmpeg_build/lib --bindir=/home/tony/bin > --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype > --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis > --enable-libvpx --enable-libx264 --enable-nonfree > > libavutil 55. 34.101 / 55. 34.101 > > libavcodec 57. 64.101 / 57. 64.101 > > libavformat 57. 56.101 / 57. 56.101 > > libavdevice 57. 1.100 / 57. 1.100 > > libavfilter 6. 65.100 / 6. 65.100 > > libswscale 4. 2.100 / 4. 2.100 > > libswresample 2. 3.100 / 2. 3.100 > > libpostproc 54. 1.100 / 54. 1.100 > > Input #0, mpegts, from '/tmp/6d41bcedfe4849cf5a9a244ce159d0bd.mp4': > > Duration: 00:00:09.02, start: 1.456711, bitrate: 1003 kb/s > > Program 1 > > Metadata: > > service_name : Service01 > > service_provider: FFmpeg > > Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), > yuv420p(progressive), 720x260 [SAR 1:1 DAR 36:13], 29.97 fps, 29.97 tbr, > 90k tbn, 59.94 tbc > > Stream #0:1[0x101]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, > stereo, s16p, 384 kb/s > > > Thanks, > > Tony > > On Mon, Jul 17, 2017 at 2:20 PM, Gyan <[email protected]> wrote: > >> On Tue, Jul 18, 2017 at 12:37 AM, Tony Lambropoulos <[email protected]> >> wrote: >> >> > >> > Does anyone have a specific list of these attributes to ensure the >> concat >> > command is successful? >> > >> >> For video streams, resolution and SAR have to match. Pixel format and >> frame >> rate need not match. Since the filter operates upon decoded frames, >> inputs' >> bitstream syntax i.e. codec is not relevant. >> _______________________________________________ >> ffmpeg-user mailing list >> [email protected] >> http://ffmpeg.org/mailman/listinfo/ffmpeg-user >> >> To unsubscribe, visit link above, or email >> [email protected] with subject "unsubscribe". > > > _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
