Mov TimeCode Track Info

[Dave1024]

Hi,

I am looking tools which shows the .mov file timecode track information.(tmcd atom).

What is my thought in .mov files there is usually video audio and a timecode track. The timecode track gives a start time value. This is the timecode value for first video frame and rest of the video frame timecode, calculate with respect to time scale value and duration from the corresponding track header.

Please share a tool to find the start time of .mov file and correct me if any difference in my thought.

Thanks
Dave

[Albert25]

ffmbc (and ffmpeg?) now display the timecode. It cannot change it, and there are bugs when trying to copy the data track to a new file, but it does display it. I couldn't yet test to see if it's really correct.

[Dave1024]

I use ffprobe to understand the anatomy of the file.

ffprobe.exe -show_streams test.mov will give the following info about the timecode track
[STREAM]
index=5
codec_name=unknown
codec_long_name=unknown
profile=unknown
codec_type=data
codec_time_base=1/25
codec_tag_string=tmcd
codec_tag=0x64636d74
id=N/A
r_frame_rate=0/0
avg_frame_rate=0/0
time_base=1/25
start_time=0.000000
duration=52.640000
bit_rate=N/A
nb_frames=1
nb_read_frames=N/A
nb_read_packets=N/A
TAG:language=eng
TAG:handler_name=Apple Alias Data Handler
TAG:timecode=09:59:40:00
[/STREAM]

ffprobe.exe -show_packets test.mov

[PACKET]
codec_type=data
stream_index=5
pts=0
pts_time=0.000000
dts=0
dts_time=0.000000
duration=1316
duration_time=52.640000
convergence_duration=N/A
convergence_duration_time=N/A
size=4
pos=349757537
flags=K
[/PACKET]

Can anybody clarify following questions ?

The issue is when i check the pos = 349757537 in the file i got the value 00 0D B9 AC 00....[Byte value in the file]
The TAG:timecode=09:59:40:00 how can i match this value to the file data.[I suspect endianness change?]
Is there any different meaning for TAG:timecode.?
How can find TAG:timecode value from the file? or TAG:timecode is derived from any other values?

Thanks
Dave

[smrpix]

Quicktime Pro gives you the option to see the timecode track if you click the counter. Not sure about the free version.

What are you actually hoping to accomplish?

[Dave1024]

I tried to read the start time code from the file.
In byte format as it is present in the bit stream.

Regards
Dave