Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am trying to fix the metadata of some old videos, so i would like to copy all streams audio video and subtitle and merge the metadata from a txt file.

I first dump the metadata with: avconv -i out.mp4 -f ffmetadata metadata.txt

and then try to copy with the metadata: avconv -i MOV_0732.mp4 -f ffmetadata -i metadata.txt -c:v copy -c:a copy -c:s copy -map 0 out.mp4

But the final metadata is untouched, if i move the metadata arguments to the end avconv does not start:

[buffer @ 0x2128d40] w:1280 h:720 pixfmt:yuv420p
[mpeg4 @ 0x2124660] Invalid pixel aspect ratio 65536/65536, limit is 255/255
Output #0, mp4, to 'out.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 0
    compatible_brands: isom3gp4
    creation_time   : 1947-03-24 14:12:20
    Stream #0.0(eng): Video: mpeg4, yuv420p, 1280x720 [PAR 65536:65536 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 90k tbc
    Metadata:
      creation_time   : 1947-03-24 14:12:20
    Stream #0.1(eng): Audio: [0][0][0][0] / 0x0000, 48000 Hz, mono, s16, 200 kb/s
    Metadata:
      creation_time   : 1947-03-24 14:12:20
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> mpeg4)
  Stream #0:1 -> #0:1 (aac -> libvo_aacenc)
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
share|improve this question
up vote 1 down vote accepted

After reading the documentation and lots of searches i finally got the answer i wanted, the final command is:

avconv -i IN.mp4 -i METADATA.txt -map_metadata 1 -codec copy -map 0 OUT.mp4

This means:

  • use the inputs: IN.mp4 and METADATA.txt
  • map the metadata from input 1 (METADATA.txt)
  • copy all codecs (no transcoding)
  • map all streams from input 0 (IN.mp4)
  • write to OUT.mp4
share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.