Feature request: DAB, and H.264 with missing some info in its header

Pawel

New member
Would it be possible to support DAB recordings (AC3, MP2, AAC)? As yet VRD refuses to open containers that have audio only stream. The new feature would be particularly useful for AC3 as, if I am aware, there is no tool which allows to cut on the frame level. For MP2 and AAC there is great mp3DirectCut but having all-in-one in VRD would be great.

Another request: in this thread we discussed an H.264 stream that has not set all required parameters in its header, like fps. Such issues have some webcasts, including iTunes. Do you plan to add to VRD5 such fixer?

Thanks,
Pawel
 

Dan203

Senior Developer
Staff member
Opening files with audio only or video only is not currently possible. VRD has a LOT of code designed to maintain A/V sync and it simply does not work properly when either is missing.

v5 has a feature that will automatically determine the frame rate if it's not available in the SPS, this allows it to open files like those captured from a Slingbox.
 

Pawel

New member
Thank you for reply, Dan.

So, you are rather not going to support audio only containers in future releases?

Concerning H.264 with missing parameters, I see that VRD5 process them correctly, at least that I have. However, I wonder if it is possible in a future release to write missing info into the header. As yet the parameter is set in mp4 and mkv only but not as a hard coded one. Output TS lacks such info and cannot be opened in i.e. VRD4.
 

Danr

Administrator
Staff member
Concerning H.264 with missing parameters, I see that VRD5 process them correctly, at least that I have. However, I wonder if it is possible in a future release to write missing info into the header. As yet the parameter is set in mp4 and mkv only but not as a hard coded one. Output TS lacks such info and cannot be opened in i.e. VRD4.
Yes, this will be possible in the future. There are two approaches, add the missing frame rate that is expected in a .ts file, or attempt to determine the frame rate from the time stamps in a .TS file. In either case, we will be open a TS that doesn't have frame rate info stored in the stream header.
 
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