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Question

608 and 708 are not rendering in media encoder 25.4

Forum|Forum|6 months ago
September 8, 2025
3 replies
283 views

Greetings.

I hava a timeline that contains both 608 and 708 caption tracks. The issue I'm having is that both the 608 and 708 cc streams are not embedding in the output file when I export via Media Encoder - Just the 708 stream is being encoded. The file format being rendered to is MXF XDCAM 422 1080i. If, however, I do a direct render from Premiere, both streams are embedded as they should be. Both methods of exporting are using the exact same render preset.

I'm working on a windows 10 system. I have not had this issue previously.

Export

thxapproved2

Inspiring

Hello all!! I’m having the EXACT same issue in Media Encoder. Perhaps this should be a ME topic, but I don’t know where the problem lies. I have a show that I am conforming for distribution. So, I imported the original MXFs with captions. 608 and 708 both show up.

When exporting directly from Premiere 26.0.2, there are no issues. However, there are 26 programs I am prepping and would like to queue them. So, when I send to Media Encoder, with the “Import sequences natively” box checked, nothing will ever happen. Just sits on “processing” for hours.

When I send it to ME with the “Import sequences natively” box unchecked, it processes just fine, but that’s when I am having the same problem as everyone else. It only embeds 708. I open the preset in ME and, according to the dialog box, it thinks it’s embedding both 608 and 708. It just only does 708 (BTW, I am using the “MediaInfo” program to examine. We use it quite often to diagnose issues).

I tried the suggestion of @PaulMurphy to change the track settings, just to have a go. No difference. Media Encoder still says it is embedding two text ancillary data tracks.

So, I do have a workaround. I just won’t be able to utilize Media Encoder for it’s intended purpose.

We are doing a broadcast television conform for distribution and these issues can be really pesky, especially when the distributor keeps coming back and saying my file is wrong. Now I know why.

Any fix to this broken code would be appreciated.

S

Sumeet_Kumar_Choubey

Community Manager

Hi thxapproved2,

We’re sorry about the poor experience. Could you please confirm the OS & the exact version of Media Encoder that you are experiencing this issue with? It will help us properly diagnose the issue at our end.

Thanks,

Sumeet

thxapproved2

Inspiring

Sumeet,

This is a Windows 11 PC with an i9-13900K CPU, 64GB RAM, RTX4090 GPU
the Version of AME = 26.0.2 (Build 2)

brandonp79670526

Participant

Same issue on a Mac. Any changes since last post?

P

PaulMurphy

Community Expert

I was able to reproduce this issue — when exporting a sequence with both 608 and 708 captions, Premiere Pro includes both in the MXF file. However, when exporting through Media Encoder, only the 708 captions were embedded.

This seems to be related to how streams are assigned in Premiere Pro. Try the following:

In the Timeline, right-click each captions track and select Track Settings.
Assign different streams to each track — for example:
- Set the 608 captions to CC1.
- Set the 708 captions to Service 2.

After making this change, both 608 and 708 captions exported correctly through Media Encoder.

Stan Jones

Community Expert

@ARV Super2 @PaulMurphy

I was NOT able to replicate on Win 11 using PR Beta 25.6.0.55. Two caption tracks, one 608 CC1, the other 708 Service 1.

Exporting using the MXF OP1a options. In both PR and after queuing to AME, the captions options are the default for embed: both show as included.

Tested by importing the export back to PR.

I'll try next on PR 25.4.0, but before I test further, anything different in how either of you exported?

Stan

A

ARV Super2Author

Participating Frequently

Hi Stan. Making changes as suggested by Paul did not work -- same issue. I just updated to 25.5, again the same issue. When exporting direct, cc encodes both streams. When exporting through M/E only 1 stream encodes. This has been tried on to different systems -- 1 a windows 10 and the other windows 11. This is proving very frustrating as I require numerous versions of the same program. I can no longe set them all up to export through M/E, I have to manually do one at a time - very time consuming.

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