Remuxing DV to AVI

[lpmaskman]

I want to remux DV extension file to AVI file. The file is captured from a miniDV camcorder but the DV container is pain in the ass on Windows. The file was received, I don't own neither the camcorder nor the tape. I tried to remux it into AVI with ffmpeg with the -c copy command.

But the ffmpeg said

[dv @ 000002449145bd00] Detected timecode is invalid
[dv @ 000002449145bd00] Estimating duration from bitrate, this may be inaccurate

And the result is audio and video are totally out of sync.

Input file mediainfo:

Format                      : DV
Commercial name             : DVCPRO
File size                   : 16.7 GiB
Duration                    : 1 h 23 min
Overall bit rate mode       : Constant
Overall bit rate            : 28.8 Mb/s
Recorded date               : 2004-08-03 21:24:24.000

Video
Format                      : DV
Commercial name             : DVCPRO
Duration                    : 1 h 23 min
Bit rate mode               : Constant
Bit rate                    : 24.4 Mb/s
Width                       : 720 pixels
Height                      : 480 pixels
Display aspect ratio        : 4:3
Frame rate mode             : Constant
Frame rate                  : 29.970 (29970/1000) FPS
Standard                    : NTSC
Color space                 : YUV
Chroma subsampling          : 4:1:1
Bit depth                   : 8 bits
Scan type                   : Interlaced
Scan order                  : Bottom Field First
Compression mode            : Lossy
Bits/(Pixel*Frame)          : 2.357
Time code of first frame    : 00:00:03;21
Time code source            : Subcode time code
Stream size                 : 14.2 GiB (85%)
Encoding settings           : wb mode= / white balance= / fcm=manual focus

Audio
ID                          : 0
Format                      : PCM
Format settings             : Big / Signed
Duration                    : 1 h 23 min
Bit rate mode               : Constant
Bit rate                    : 1 536 kb/s
Channel(s)                  : 2 channels
Sampling rate               : 48.0 kHz
Bit depth                   : 16 bits
Stream size                 : 912 MiB (5%)

What would be the best solution to remux it without sync errors?

[ProWo]

Try

ffmpeg -fflags +genpts -i your.dv -c copy output.avi

[jagabo]

So you used a command like this?

ffmpeg -i input.dv -c copy output.avi

That's always worked for me. How is your audio out of sync? The fixed amount all the way through the video? Or does the sync get further and further off over the duration of the video? And do all DV files result in the same amount of async?

[lpmaskman]

Try

ffmpeg -fflags +genpts -i your.dv -c copy output.avi

Thanks but no success.

[lpmaskman]

So you used a command like this?

ffmpeg -i input.dv -c copy output.avi

That's always worked for me. How is your audio out of sync? The fixed amount all the way through the video? Or does the sync get further and further off over the duration of the video? And do all DV files result in the same amount of async?

I tried this first. The out ot sync is like audio and video are playing at different speed. Like there are seconds of drift.

[jagabo]

So you used a command like this?

ffmpeg -i input.dv -c copy output.avi

That's always worked for me. How is your audio out of sync? The fixed amount all the way through the video? Or does the sync get further and further off over the duration of the video? And do all DV files result in the same amount of async?

I tried this first. The out ot sync is like audio and video are playing at different speed. Like there are seconds of drift.

Can you upload a sample of your problematic DV files? Or at least post a mediainfo report for the AVI file created from the DV in your first post.

[Cornucopia]

Something is certainly messed up. Have these been processed in any way? As the 1st audio stream should say something like "muxed in dv" or similar. Makes me think it is using a copy of audio, but cannot see the original audio (and it should).


Scott

[lpmaskman]

So you used a command like this?

ffmpeg -i input.dv -c copy output.avi

That's always worked for me. How is your audio out of sync? The fixed amount all the way through the video? Or does the sync get further and further off over the duration of the video? And do all DV files result in the same amount of async?

I tried this first. The out ot sync is like audio and video are playing at different speed. Like there are seconds of drift.

Can you upload a sample of your problematic DV files? Or at least post a mediainfo report for the AVI file created from the DV in your first post.

Due to this I cannot extract a part of it. So here is the medainfo of remuxed file:

Format                      : AVI
Format/Info                 : Audio Video Interleave
Commercial name             : DVCPRO
Format profile              : OpenDML
File size                   : 17.6 GiB
Duration                    : 1 h 23 min
Overall bit rate mode       : Constant
Overall bit rate            : 30.3 Mb/s
Recorded date               : 2004-08-03 21:24:24.000
Writing application         : Lavf58.45.100

Video
ID                          : 0
Format                      : DV
Commercial name             : DVCPRO
Codec ID                    : dvsd
Codec ID/Hint               : Sony
Duration                    : 1 h 23 min
Bit rate mode               : Constant
Bit rate                    : 24.4 Mb/s
Width                       : 720 pixels
Height                      : 480 pixels
Display aspect ratio        : 4:3
Frame rate mode             : Constant
Frame rate                  : 29.970 (30000/1001) FPS
Original frame rate         : 29.970 (29970/1000) FPS
Standard                    : NTSC
Color space                 : YUV
Chroma subsampling          : 4:1:1
Bit depth                   : 8 bits
Scan type                   : Progressive
Original scan type          : Interlaced
Original scan order         : Bottom Field First
Compression mode            : Lossy
Bits/(Pixel*Frame)          : 2.357
Time code of first frame    : 00:00:03;21
Time code source            : Subcode time code
Stream size                 : 16.7 GiB (95%)
Encoding settings           : wb mode= / white balance= / fcm=manual focus

Audio
ID                          : 1
Format                      : PCM
Format settings             : Little / Signed
Codec ID                    : 1
Duration                    : 1 h 22 min
Bit rate mode               : Constant
Bit rate                    : 1 536 kb/s
Channel(s)                  : 2 channels
Sampling rate               : 48.0 kHz
Bit depth                   : 16 bits
Stream size                 : 906 MiB (5%)
Alignment                   : Aligned on interleaves
Interleave, duration        : 34  ms (1.01 video frame)

[jagabo]

The only thing I see that's unusual is the "Time code of first frame". Your video starts at about 3 seconds. All the .dv file that I have start at 0. The AVI file has retained the same start time but maybe your player/editor isn't honoring that.

[aedipuss]

some apple product messed that up good. video and audio length are off by a minute. only the original tape and a new capture will fix it.