I have three videos which I want to concat together the problem it works fine for some videos but when I test a specific video it gives me an error and cause the resulting video to show in a strange way and everything is moving very fast in the video like I was forward up the video
this the code I used to add the video together from a file this the out.txt
file 'D:/Build/start.mp4' file 'D:/Build/a.mp4' file 'D:/Build/Song & Lyrics/2f.mp4' the command i used with ffmpeg
ffmpeg -f concat -safe 0 -i out.txt -c copy -y go.mp4 i faced this error
[mov,mp4,m4a,3gp,3g2,mj2 @ 05c0dbc0] Auto-inserting h264_mp4toannexb bitstream filter Input #0, concat, from 'out.txt': Duration: N/A, start: 0.000000, bitrate: 280 kb/s Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 155 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc Metadata: creation_time : 2018-02-08T13:25:49.000000Z handler_name : ISO Media file produced by Google Inc. Created on: 02/08/2018. Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s Metadata: creation_time : 2018-02-08T13:25:49.000000Z handler_name : ISO Media file produced by Google Inc. Created on: 02/08/2018. Output #0, mp4, to 'go.mp4': Metadata: encoder : Lavf58.7.100 Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 155 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 90k tbc Metadata: creation_time : 2018-02-08T13:25:49.000000Z handler_name : ISO Media file produced by Google Inc. Created on: 02/08/2018. Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s Metadata: creation_time : 2018-02-08T13:25:49.000000Z handler_name : ISO Media file produced by Google Inc. Created on: 02/08/2018. Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #0:1 -> #0:1 (copy) Press [q] to stop, [?] for help [mov,mp4,m4a,3gp,3g2,mj2 @ 05c38840] Auto-inserting h264_mp4toannexb bitstream filter [mp4 @ 061b8f00] Non-monotonous DTS in output stream 0:0; previous: 624624, current: 88735; changing to 624625. This may result in incorrect timestamps in the output file. [mp4 @ 061b8f00] Non-monotonous DTS in output stream 0:0; previous: 624625, current: 89247; changing to 624626. This may result in incorrect timestamps in the output file. [mp4 @ 061b8f00] Non-monotonous DTS in output stream 0:0; previous: 624626, current: 89759; changing to 624627. This may result in incorrect timestamps in the output file. ..... [mov,mp4,m4a,3gp,3g2,mj2 @ 05c38840] Auto-inserting h264_mp4toannexb bitstream filtereed=69.7x frame= 8991 fps=2903 q=-1.0 Lsize= 8378kB time=00:05:58.22 bitrate= 191.6kbits/s speed= 116x video:2469kB audio:5625kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.500685% so what the problem make this error. the problem appear when i use this new start.mp4 to be merge with my videos i tried on other ones and it worked fine.
Update
i tested to convert the videos to MTS formate then concate them as an answer to similar problem but the problem is when i convert the mp4 videos to this formate the size of the file be too large from 6 MB to 42 MB!! so if there is a better answer. or a way to make the file still same size or less the linke of the answer is here but it worked fine Thanks in advance
