I have a bunch of MP4 files that were purchased to incorporate into a Halloween project. Most import into Vegas (Sony Vegas Pro 13) just fine, but a few import without audio. I used Handbrake to convert them to MP4 files and that fixed the project. Is there any ideas why a few of the MP4 files would not import the audio track?
@Steve said: "Is there any ideas why a few of the MP4 files would not import the audio track?"
Not without seeing a MediaInfo report for the subject file(s) or a sample file. Others on the forum are good, but not clairvoyant. I'm just a dullard but would take a scientific approach to helping you solve your dilemma.
Thanks for the reply.
The mediainfo for the "failing" imports is, except for the filesize, identical.
In these files, Addams Family does not import the audio, Sleepy Hollow does.
General Complete name : Z:\Halloween\All Pumpkin Videos\Monster Mash_Trio_Pumpkin.mp4 Format : MPEG-4 Format profile : Base Media / Version 2 Codec ID : mp42 (mp42/mp41) File size : 227 MiB Duration : 3 min 26 s Overall bit rate mode : Variable Overall bit rate : 9 202 kb/s Frame rate : 30.000 FPS Encoded date : 2021-08-05 22:55:37 UTC Tagged date : 2021-08-05 22:55:39 UTC TIM : 00:00:00:00 TSC : 30 TSZ : 1 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.2 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 4 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 3 min 26 s Bit rate : 8 996 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 30.000 FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.145 Stream size : 222 MiB (98%) Language : English Encoded date : 2021-08-05 22:55:37 UTC Tagged date : 2021-08-05 22:55:37 UTC Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Codec configuration box : avcC Audio ID : 2 Format : AAC LC Format/Info : Advanced Audio Codec Low Complexity Codec ID : mp4a-40-2 Duration : 3 min 26 s Source duration : 3 min 26 s Bit rate mode : Variable Bit rate : 192 kb/s Maximum bit rate : 286 kb/s Channel(s) : 2 channels Channel layout : L R Sampling rate : 48.0 kHz Frame rate : 46.875 FPS (1024 SPF) Compression mode : Lossy Stream size : 4.67 MiB (2%) Source stream size : 4.67 MiB (2%) Language : English Encoded date : 2021-08-05 22:55:37 UTC Tagged date : 2021-08-05 22:55:37 UTC
General Complete name : Z:\Halloween\All Pumpkin Videos\JOLJ3_Sleepy Hollow_Trio_Pumpkin.mp4 Format : MPEG-4 Format profile : Base Media / Version 2 Codec ID : mp42 (mp42/mp41) File size : 352 MiB Duration : 5 min 20 s Overall bit rate mode : Variable Overall bit rate : 9 209 kb/s Frame rate : 30.000 FPS Encoded date : 2021-08-06 00:16:01 UTC Tagged date : 2021-08-06 00:16:04 UTC TIM : 00:00:00:00 TSC : 30 TSZ : 1 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.2 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 4 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 5 min 20 s Bit rate : 8 998 kb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 30.000 FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.145 Stream size : 344 MiB (98%) Language : English Encoded date : 2021-08-06 00:16:01 UTC Tagged date : 2021-08-06 00:16:01 UTC Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Codec configuration box : avcC Audio ID : 2 Format : AAC LC Format/Info : Advanced Audio Codec Low Complexity Codec ID : mp4a-40-2 Duration : 5 min 20 s Source duration : 5 min 20 s Bit rate mode : Variable Bit rate : 192 kb/s Maximum bit rate : 291 kb/s Channel(s) : 2 channels Channel layout : L R Sampling rate : 48.0 kHz Frame rate : 46.875 FPS (1024 SPF) Compression mode : Lossy Stream size : 7.23 MiB (2%) Source stream size : 7.23 MiB (2%) Language : English Encoded date : 2021-08-06 00:16:01 UTC Tagged date : 2021-08-06 00:16:01 UTC
Both of your video files are Variable Bitrate, which is often problematic or unreliable, especially with older Vegas versions including yours.
The standard fix is to re-encode them in Handbrake, using "Same as Source" and "Constant Bitrate" in the video tab.
The oddity is that the same source files (atmosfx.com) were used in prior years with the same version of Vegas. The reason that I use the older version of Vegas is that I retired and rarely use Vegas much these days.
Steve, the fact that you report that one file opens and one does not probably indicates some inconsistencies at their end, and not anything we could pin down for you, since I can find no obvious differences in your MediaInfo.
That said, the conversion of all VFR files to CFR is the very first step at my house, regardless of their source, regardless of the Vegas version I'm using, and even if they open as native VFR.
It's just a troublesome format, designed only to save storage space, not to make our lives easier.
Thanks for marking my reply as The Solution
;?)