Hi Peter, you can use "-map_metadata 0". It copies all possible metadata from input to output.
-Ulf Am 18.03.20 um 07:49 schrieb Peter B.:
Hi everyone! Is it possible to ask/force FFmpeg to keep as many metadata fields as technically possible when transcoding or rewrapping? I understand that not all (container-)formats support the same metadata fields, but I've noticed for example that when rewrapping, not all metadata fields that were populated in the input are then present in the output - even if the format is identical. Here is an example of rewrapping MOV to MOV where I've noticed the following data missing in the output (commandline and output see below): * color information (smpte170m/bt470bg/bt709) * creation_time (*) I'm grateful for any hints or suggestions! Thank you in advance, Peter (*) Copying "creation_time" may be controversial, but it would be amazing to be able to preserve this information in the output (e.g. map it to a different field?). Files were created with the following command: // ------------------------ $ ffmpeg -i in.mov -c copy -map 0 out.mov // ------------------------ Then metadata checked as follows: // ------------------------ $ ffmpeg -i in.mov -i out.mov -hide_banner // ------------------------ Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'in.mov': Metadata: major_brand : qt minor_version : 0 compatible_brands: qt creation_time : 2012-01-18T12:50:53.000000Z Duration: 00:03:54.80, start: 0.000000, bitrate: 30453 kb/s Stream #0:0(und): Video: dvvideo (dvcp / 0x70637664), yuv420p(smpte170m/bt470bg/bt709, bottom coded first (swapped)), 720x576 [SAR 16:15 DAR 4:3], 28800 kb/s, SAR 59:54 DAR 295:216, 25 fps, 25 tbr, 25k tbn, 25 tbc (default) Metadata: creation_time : 2012-01-18T12:50:53.000000Z handler_name : Core Media Video encoder : DV - PAL timecode : 00:37:50:04 Stream #0:1(und): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s (default) Metadata: creation_time : 2012-01-18T12:50:53.000000Z handler_name : Core Media Audio Stream #0:2(und): Data: none (tmcd / 0x64636D74) Metadata: creation_time : 2012-01-18T12:50:53.000000Z handler_name : Core Media Time Code reel_name : 2001-11-10_KveldsseteKaarvatn timecode : 00:37:50:04 Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'out.mov': Metadata: major_brand : qt minor_version : 512 compatible_brands: qt encoder : Lavf58.33.100 Duration: 00:03:54.84, start: 0.000000, bitrate: 30333 kb/s Stream #1:0: Video: dvvideo (dvcp / 0x70637664), yuv420p(bottom coded first (swapped)), 720x576 [SAR 16:15 DAR 4:3], 28800 kb/s, SAR 59:54 DAR 295:216, 25 fps, 25 tbr, 25k tbn, 25 tbc (default) Metadata: handler_name : Core Media Video encoder : DV - PAL timecode : 00:37:50:04 Stream #1:1: Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s (default) Metadata: handler_name : Core Media Audio Stream #1:2: Data: none (tmcd / 0x64636D74) Metadata: handler_name : Core Media Time Code reel_name : 2001-11-10_KveldsseteKaarvatn timecode : 00:37:50:04 At least one output file must be specified _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
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