# Multi-channel export from timeline **URL:** \ **Category:** Flame Questions\ **Created:** [March 17, 2021, 2:27pm UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650 "2021-03-17T14:27:15Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![GParry](https://avatars.discourse-cdn.com/v4/letter/g/a88e57/32.png) [@GParry](https://forum.logik.tv/u/GParry)\ **Post date:** [March 17, 2021, 2:27pm UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650/1 "2021-03-17T14:27:16Z")
Hi all, just checking before I potentially waste an afternoon… I have imported a load of multi-channel EXRs. I put them in a reel and applied a single effect. I rendered them, now I want to export them all again. But when I export multi-channel EXR from the reel the alpha is over-written with white. Am I missing something, or is Flame still missing something? Gareth Parry ---
**Author:** ![La\_Flame](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/la_flame/32/200_2.png) [@La\_Flame](https://forum.logik.tv/u/La_Flame)\ **Post date:** [March 17, 2021, 3:37pm UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650/2 "2021-03-17T15:37:51Z")
What type of TLFX did you put on the EXRs? Did you enable or disable the comp button for each segment? I know there are some alpha issues we have been looking into. Thanks Grant ---
**Author:** ![paul\_round](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/paul_round/32/389_2.png) [@paul\_round](https://forum.logik.tv/u/paul_round)\ **Post date:** [October 1, 2025, 3:24pm UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650/3 "2025-10-01T15:24:09Z")
bringing this back from the dead. Anyway to do this? I have a bunch of mult-channel comps, with several alphas, that have to be published from the timeline as sequences, but they are only appearing as embedded alphas. I don’t want to have to get nuke to do this ---
**Author:** ![Frank](https://avatars.discourse-cdn.com/v4/letter/f/3d9bf3/32.png) [@Frank](https://forum.logik.tv/u/Frank)\ **Post date:** [October 2, 2025, 6:10pm UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650/4 "2025-10-02T18:10:32Z")
Check your write file node. ![Screenshot 2025-10-02 at 2.08.47 PM](https://us1.discourse-cdn.com/flex020/uploads/thedepartmentofexternalservices/original/2X/1/1e7468ecd99a351bc9dcb39fae52147cc1da4d9a.jpeg) ---
**Author:** ![paul\_round](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/paul_round/32/389_2.png) [@paul\_round](https://forum.logik.tv/u/paul_round)\ **Post date:** [October 2, 2025, 6:39pm UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650/5 "2025-10-02T18:39:35Z")
This is publishing from the timeline ---
**Author:** ![Frank](https://avatars.discourse-cdn.com/v4/letter/f/3d9bf3/32.png) [@Frank](https://forum.logik.tv/u/Frank)\ **Post date:** [October 2, 2025, 6:55pm UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650/6 "2025-10-02T18:55:54Z")
Can you take your timeline and stick it inside a BFX+explode? And then pipe the stuff to the write file node? ---
**Author:** ![cnoellert](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/cnoellert/32/559_2.png) [@cnoellert](https://forum.logik.tv/u/cnoellert)\ **Post date:** [October 2, 2025, 11:24pm UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650/7 "2025-10-02T23:24:28Z")
Publishing is working. It seems you may have to match the same compression–although I’m not sure TBH. This is what worked for me. In my case they are of my EXRs were DWAA and multichannel. You can see it in format on one of the source clips in my edit: ![Screenshot 2025-10-02 at 4.19.27 PM](https://us1.discourse-cdn.com/flex020/uploads/thedepartmentofexternalservices/original/2X/e/e2a2aac9a54c26602777d10e57359be6855ca41b.png) Take note of the compression in the Metadata area. Scroll down to find it. Then for my publish settings I made sure that it was the same compression, that multichannel and alpha were selected. ![Screenshot 2025-10-02 at 4.19.03 PM](https://us1.discourse-cdn.com/flex020/uploads/thedepartmentofexternalservices/original/2X/7/733281bfbaf81d7fa9098acb1c1aecee258c9d57.jpeg) The resulting published images were good to go–all channels were preserved: ![Screenshot 2025-10-02 at 4.19.49 PM](https://us1.discourse-cdn.com/flex020/uploads/thedepartmentofexternalservices/original/2X/2/224175c2473d3db8600b4960427a5a7abd094df7.png) Good luck! I haven’t tried adding effects and exporting yet. I’ll do that next. ---
**Author:** ![cnoellert](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/cnoellert/32/559_2.png) [@cnoellert](https://forum.logik.tv/u/cnoellert)\ **Post date:** [October 2, 2025, 11:35pm UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650/8 "2025-10-02T23:35:58Z")
@GParry Adding timeline effects seems to kill Multichannel export of a single clip. You would need to recombine them after (Fusion/Nuke) or use batch’s multichannel exr write node to export the clips–after painstakingly connecting each and every layer from your source to you write node. It’s a perfect python problem to solve. Assuming that now that’s five years later you found a solve though lol. ---
**Author:** ![GParry](https://avatars.discourse-cdn.com/v4/letter/g/a88e57/32.png) [@GParry](https://forum.logik.tv/u/GParry)\ **Post date:** [October 3, 2025, 8:57am UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650/9 "2025-10-03T08:57:25Z")
@cnoellert - thanks so much for the research. I will neither confirm or deny if I found a solution or simply forgot about it and moved on. Autodesk peeps - I would really really love it if the system could support multi-channel in all areas - maybe there is a world where you could promote a clip to BFX, have the connections prebuilt back to the BFX out, and then apply effects per channel where needed ((you wouldn’t want a colour correct to auto apply to your motion pass)? ---
**Author:** ![paul\_round](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/paul_round/32/389_2.png) [@paul\_round](https://forum.logik.tv/u/paul_round)\ **Post date:** [October 3, 2025, 11:13am UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650/10 "2025-10-03T11:13:52Z")
> [@Frank](#): > > Can you take your timeline and stick it inside a BFX+explode? And then pipe the stuff to the write file node? Something to explore, but I have a deadline screaming at me currently, no time for experimentation ---
**Author:** ![TimC](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/timc/32/11881_2.png) [@TimC](https://forum.logik.tv/u/TimC)\ **Post date:** [October 3, 2025, 3:44pm UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650/11 "2025-10-03T15:44:33Z")
you need to do a bit of work up front, namely import separately the channels of your multi channel file and then recombining them in a vertical timeline stack, but this as has worked for a long time. [![](https://us1.discourse-cdn.com/flex020/uploads/thedepartmentofexternalservices/original/2X/8/8b0bf2be719729600f590f2707a99b5ebb866985.jpeg "Exporting Multi-Channel OpenEXRs using the Timeline - Flame 2018.3 Update") ](https://www.youtube.com/watch?v=v0hj4Foc7J4) ---
**Author:** ![paul\_round](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/paul_round/32/389_2.png) [@paul\_round](https://forum.logik.tv/u/paul_round)\ **Post date:** [October 3, 2025, 4:01pm UTC](https://forum.logik.tv/t/multi-channel-export-from-timeline/2650/12 "2025-10-03T16:01:51Z")
Thanks Tim, I’ll check it out