On Wed, Jul 28, 2021 at 7:15 PM Suporte JM <jmgeosupo...@gmail.com> wrote:
> Hi, > > I have a Garmin 66W dashcam for my work (street mapping surveyor) which > produces several 1min. MP4 videos of my journey (60 min. = 60 videos). All > these videos have telemetry data on it as metadata (GPS location, speed, > etc...). > > I want to concatenate every 5 files excluding the audio but preserving the > video and the telemetry in the metadata. > > What I have tried so far: > > > - Export GPS information as GPX file (result: successful) > > *exiftool -p gpx.fmt -ee X:\video_place\videos_1m\GRMN0005.mp4 > > GRMN0005.gpx* > > > - Merge MP4 videos as a single MP4 video (result: partially successful) > > *ffmpeg -f concat -safe 0 -i X:\video_place\videos_1m\mylist.txt -c copy > X:\video_place\videos_1m\GRMN0005to0011.mp4* > > When I use the above command on ffmpeg *I lose all my telemetry data*. > > I tried in several different ways for days, searching on several forums, I > even tried to export all GPS data from each single 1min. file merge them, > and then merge the videos and put the telemetry back. > > The ffprobe output of my 1min. video is as following: > > > > > > > > > > > > > > > > > > > > > > *Metadata:major_brand : avc1minor_version : 0compatible_brands: > avc1isomcreation_time : 2021-07-26T17:08:23.000000ZDuration: 00:01:00.06, > start: 0.000000, bitrate: 19553 kb/sStream #0:0(eng): Video: h264 (Main) > (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 19182 kb/s, 29.97 fps, > 29.97 tbr, 30k tbn (default)Metadata:creation_time : > 2021-07-26T17:08:23.000000Zhandler_name : Ambarella AVCvendor_id : > [0][0][0][0]encoder : Ambarella AVC encoderStream #0:1(eng): Audio: aac > (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 128 kb/s > (default)Metadata:creation_time : 2021-07-26T17:08:23.000000Zhandler_name : > Ambarella AACvendor_id : [0][0][0][0]Stream #0:2(eng): Subtitle: mov_text > (text / 0x74786574), 0 kb/s (default)Metadata:creation_time : > 2021-07-26T17:08:23.000000Zhandler_name : Ambarella EXT* > > I have tried as well with following code, but none of them seems to work: > > > *ffmpeg -f concat -safe 0 -i X:\video_place\videos_1m\mylist.txt -c copy > -scodec copy X:\video_place\videos_1m\GRMN0005to0011_scodec.mp4* > > > *ffmpeg -f concat -safe 0 -i X:\video_place\videos_1m\mylist.txt -c:s copy > -c:v copy X:\video_place\videos_1m\GRMN0005to0011.mp4* > > *ffmpeg -f concat -safe 0 -i X:\video_place\videos_1m\mylist.txt -c copy > -c:s mov_text X:\video_place\videos_1m\GRMN0005to0011.mp4* > > What am I missing? > > Thanks. > Rodrigo > MP4 files are not concatenable by nature by the concat DEMUXER. You can use the concat FILTER or demux them to MPEG-TS and then use the concat demuxer. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
