No audio track in exported movies

Installation and usage on Linux / Installation unter Linux
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Grant_Edwards
Posts: 17
Joined: 11 Nov 2012 03:35
Location: Minneapolis, Minnesota, USA

No audio track in exported movies

Post by Grant_Edwards » 25 Oct 2019 02:43

I'm trying to export a movie of a recording in heli-x v8, and the resulting .mp4 file never has any audio. I've tried various video players/utilities and all of them agree that the .mp4 file simply has no audio track:

Code: Select all

$ ffmpeg -i movie_001.mp4 -hide_banner 
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'movie_001.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 2019-10-25T01:34:16.000000Z
  Duration: 00:00:07.37, start: 0.000000, bitrate: 97895 kb/s
    Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1520x714, 97891 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc (default)
    Metadata:
      creation_time   : 2019-10-25T01:34:16.000000Z
      encoder         : JCodec
I've tried installing heli-x on multiple Linux machines, and they all act the same: the audio plays though the speakers during the export operation, but there's no audio in the .mp4 file. How do I enable exporting of audio in the .mp4 file?

I also tried exporting to .avi, but that doesn't work at all. It only generates ~1400 bytes in the output file, and none of the video players I've tried think it's a valid avi file.

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Michael
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Re: No audio track in exported movies

Post by Michael » 25 Oct 2019 09:13

Yes, the high Resolution Video Export does not include Audio.

You might use the obs broadcaster tool to Export Videos.

Michael

Grant_Edwards
Posts: 17
Joined: 11 Nov 2012 03:35
Location: Minneapolis, Minnesota, USA

Re: No audio track in exported movies

Post by Grant_Edwards » 25 Oct 2019 17:17

Michael wrote:
25 Oct 2019 09:13
Yes, the high Resolution Video Export does not include Audio.
OK thanks. Is that limitation only on Linux, or on all platforms?
You might use the obs broadcaster tool to Export Videos.
I can live without audio if it takes a lot of extra work (it looks like it does).

Is OBS how the videos with audio on the heli-x web site were created?

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Michael
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Re: No audio track in exported movies

Post by Michael » 25 Oct 2019 17:22

With the high resolution video export, there is no audio on all platforms.

In the last years, I used fraps.com. But know the OBS tool seems to work more stable.

In practice, I first make a recoding within HELI-X and the record it with OBS

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