Multiple Audio Input/Output streams

  • Issue

    If the source files contain more than 1 video and 1 audio stream (e.g. an MP4 source file with 1 video and 2 audio) then Voukoder 10.2 with Premiere Connector 1.10.0 cannot be used to render that file to a proxy clip (lower quality/resolution copy of the source file).

    The selected preset does not support the audio channel type of the clip #1.mp4

    Example of unsupported input stream configuration:


    Currently, Adobe Media Encoder 22.2–and Adobe Premiere Pro 22.0.0 by extension–only supports outputting multiple audio streams to the QuickTime container format.

    When exporting to the QuickTime format, the Audio settings tab has a section titled "Audio Channel Configuration". (Image 1)

    "Stream" entries are incremented with the "+" button and decremented with the "-" button.

    "Output Channels" dropdown (Image 2) provides the following configurations. FFMpeg could provide similar or vastly different options depending on the audio format and codec. Because Adobe Media Encoder does not provide a "match source" example for audio channels and streams, it may be difficult to implement the ability to pass source audio streams to Voukoder as-is.

    "Source Channels" is inferred from the "Stream" and "Output Channels" settings.

    "Channel Layout" can be configured when more there are multiple streams.


    Normally, one would request this feature to be implemented by Adobe for all applicable container formats, but I get the feeling that they're contractually obligated to not do so.

  • Vouk

    Approved the thread.
  • I would love for Vegas Pro to be able to output a single render which Voukoder would simultaneously encode into multiple output formats using hardware NVENC. In my specific case, I would be encoding a 1080p24 Vegas output into AVC (video only), h.265 (video and audio), and AC3 (audio only).

  • Sorry, I posted about this in the "future of Voukoder" thread before I saw this!

    Ideally, I'd like to be able to output as many tracks as there are in the original source file. We work with a lot of network TV shows and films and they will sometimes send us show masters containing 24 tracks of audio. Sometimes the sources will have only 5 mono channels, containing split-audio tracks (dialogue, sound effects, music etc on separate mono channels). So flexibility in the amount of channels is important.

    We need to transcode these sources to lower-quality ProRes Proxy media for editing in Adobe Premiere (we prefer to use Resolve for making these proxies), and the audio channel configuration of the proxies must match the original sources EXACTLY, in order to use the proxy workflow in Premiere.

    There will be an exciting update on this in 2023. How many tracks do you need? ;)