I'm fairly at loss here, I have 2 "almost" identical video files: mp4 container, 2 stereo AAC (320kbps) audio tracks. Only difference is that one has video encoded with h264, the other with h265
The h264 encoded file works as you'd expect in VMSP 16 (build 175), when dropped onto timeline both audiotracks are added
When I drop the h265 file on the timeline, only the first audiotrack is added. The video properties also only shows the first audiotrack, but other software (eg. VLC player, ffmpeg) show both. And in VLC I can also hear the other audio track when I change the playing track on the file.
I made both videos the same way: recorded using OBS Studio (version 25.0.4), using following encoders for video: nvenc_hevc for h265 and nvenc_h264 for h264. Matroska container, although I did also test with mp4 container, same results.
The matroska files I tried remuxing with OBS Studio, and manually with ffmpeg (ffmpeg -i foo.mkv -c copy -map 0 out.mp4), same results.
screenshots: https://imgur.com/a/l2GgMyU - just in case.
and the video clip properties from VMSP
h264 video:
General Name: h264.mkv.mp4 Folder: R:\Rec_OBS\test Type: AVC Size: 4,01 MB (4 106 816 bytes) Created: Monday, April 6, 2020, 4:35:17 PM Modified: Monday, April 6, 2020, 4:35:17 PM Accessed: Monday, April 6, 2020, 4:48:23 PM Attributes: ArchiveStreams Video: 00.00.17,768, 59,942 (VFR) fps progressive, 2560x1440x32, AVC Audio 1: 00.00.17,705, 48 000 Hz; Stereo, AAC Audio 2: 00.00.17,705, 48 000 Hz; Stereo, AACSummary [TCFM]: 8ACID information ACID chunk: no Stretch chunk: no Stretch list: no Stretch info2: no Beat markers: no Detected beats: noOther metadata Regions/markers: no Command markers: noMedia manager Media tags: noPlug-In Name: so4compoundplug.dll Folder: C:\Program Files\VEGAS\Movie Studio Platinum 16.0\FileIO Plug-Ins\so4compoundplug Format: AVC Version: Version 1.0 (Build 8532) Company: MAGIX Computer Products Intl. Co.
h265 video:
General Name: h265.mkv.mp4 Folder: R:\Rec_OBS\test Type: Intel HEVC Size: 6,03 MB (6 177 871 bytes) Created: Monday, April 6, 2020, 4:35:21 PM Modified: Monday, April 6, 2020, 4:35:21 PM Accessed: Monday, April 6, 2020, 4:49:07 PM Attributes: ArchiveStreams Video: 00.00.19,398, 59,953 fps progressive, 2560x1440x32, HEVC Audio: 00.00.19,348, 48 000 Hz; Stereo, AACACID information ACID chunk: no Stretch chunk: no Stretch list: no Stretch info2: no Beat markers: no Detected beats: noOther metadata Regions/markers: no Command markers: noMedia manager Media tags: noPlug-In Name: mxhevcplug.dll Folder: C:\Program Files\VEGAS\Movie Studio Platinum 16.0\FileIO Plug-Ins\mxhevcplug Format: Intel HEVC Version: Version 1.0 (Build 8532) Company: MAGIX Computer Products Intl. Co.
and finally; https://www.dropbox.com/s/rqwyyzlrnnfewx3/h264_and_h265_clips.zip?dl=0 the video clips in question, if anyone wants to doublecheck this.
So, am I doing something wrong here? Why doesn't the second audiotrack on the h265 file show at all in VMSP?