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View Full Version : File Source (Async.)::Output


Tobiwan
12th November 2021, 19:41
Hope the category is ok here for my problem. I have been putting this off for years and am now making a new attempt to fix the problem.

I can't play some old video files anymore, when I start the files with MPC-HC I get the following message:

File Source (Async.)::Output

Media Type 0:
--------------------------
Unknown

AM_MEDIA_TYPE:
majortype: MEDIATYPE_Stream {E436EB83-524F-11CE-9F53-0020AF0BA770}
subtype: Unknown GUID Name {08E22ADA-B715-45ED-9D20-7B87750301D4}
formattype: TIME_FORMAT_NONE {00000000-0000-0000-0000-000000000000}
bFixedSizeSamples: 1
bTemporalCompression: 0
lSampleSize: 1
cbFormat: 0


Media Type 1:
--------------------------
Unknown

AM_MEDIA_TYPE:
majortype: MEDIATYPE_Stream {E436EB83-524F-11CE-9F53-0020AF0BA770}
subtype: TIME_FORMAT_NONE {00000000-0000-0000-0000-000000000000}
formattype: TIME_FORMAT_NONE {00000000-0000-0000-0000-000000000000}
bFixedSizeSamples: 1
bTemporalCompression: 0
lSampleSize: 1
cbFormat: 0

MPV player can't display the file at all, nothing happens.

MediaInfo shows the following information about the video file:

Allgemein
Complete name : N:\*****.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 18,9 GiB
Duration : 6 h 21 min
Overall bit rate mode : variabel
Overall bit rate : 7 097 kb/s
Writing application : Lavf58.26.101

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Ja
Format settings, Reference frames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 6 h 21 min
Bit rate : 4 931 b/s
Width : 1 920 Pixel
Height : 1 080 Pixel
Display aspect ratio : 16:9
Frame rate mode : variabel
Frame rate : 0,001 FPS
Minimum frame rate : 0,000 FPS
Maximum frame rate : 62,500 FPS
Original frame rate : 60,000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : progressiv
Bits/(Pixel*Frame) : 2.378
Stream size : 495 GiB
Source stream size : 780 GiB
mdhd_Duration : 22873884
Codec configuration box : avcC

Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 6 h 21 min
Bit rate mode : variabel
Bit rate : 154 Mb/s
Nominal bit rate : 126 kb/s
Maximum bit rate : 128 kb/s
Channel(s) : 2 Kanäle
Channel layout : L R
Sampling rate : 44,1 kHz
Frame rate : 43,066 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 410 GiB
Default : Ja
Alternate group : 1

I tried to open the file with HandBrake, but the file is not recognized and does not open in HandBrake.

My idea was to use HandBrake to re-encode the file so it would work again, but that didn't work for another file that is also broken but has a different problem.

Is there a program I can use to "fix" the video file or does anyone have an idea what the error may be?

I'm using LAV-Filters and madVR.

Selur
14th November 2021, 07:43
Those headers are strange.

Allgemein
...
File size : 18,9 GiB
...
Duration : 6 h 21 min
...


Video
...
Frame rate : 0,001 FPS
Minimum frame rate : 0,000 FPS
Maximum frame rate : 62,500 FPS
Original frame rate : 60,000 FPS
Stream size : 495 GiB
Source stream size : 780 GiB
...

Audio
...
Stream size : 410 GiB...

first thing I would try is remuxing the file by first extracting the raw streams and then muxing the raw streams again.
(not correct, if the file was downloaded and not created by me the first thing I would do is look with a hex editor at the file since it looks like a dummy file with some headers added,..)
If you are sure you could play this before, you might have a problem with your hard drive.

Tobiwan
16th November 2021, 16:29
Those headers are strange.

If you are sure you could play this before, you might have a problem with your hard drive.

The video files are downloaded VODs from Twitch with the TwitchLeecher tool (https://github.com/Franiac/TwitchLeecher), there you can also edit the downloaded VODs, i.e. cut away parts, which I have done often. Maybe that's why the files are so strange.

For a while I used O&O Defrag, that's when the problems first appeared back then, not only video files are affected, I also "lost" image files.
I would not recommend O&O Defrag to anyone, as I fear it may have corrupted the files.

The hard drives do not show any errors or problems that could be repaired, Windows also works normally. Only certain files are affected.

Some video files I can still half play, then there is nothing more of the video, it shows data, but no video to it.

I was hoping it might just be a codec problem or a problem with the files that could be fixed with something, since the data seems to still be there.