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MKV - Could not write header for output - error #4608

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opened 2026-02-21 02:15:28 -05:00 by deekerman · 2 comments

deekerman commented

2026-02-21 02:15:28 -05:00

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Originally created by @AdamDanischewski on GitHub (May 9, 2015).

I am trying to download the following YouTube video:
https://www.youtube.com/watch?v=9ZVMViSx6Ek

$ youtube-dl --version
2015.05.04

It is stored in a mkv container yet it won't convert, here is the result:
youtube-dl "https://www.youtube.com/watch?v=9ZVMViSx6Ek" --merge-output-format mkv
[youtube] 9ZVMViSx6Ek: Downloading webpage
[youtube] 9ZVMViSx6Ek: Extracting video information
[youtube] 9ZVMViSx6Ek: Downloading DASH manifest
[download] Destination: Hiatus Kaiyote - Breathing Underwater-9ZVMViSx6Ek.f248.webm
[download] 100% of 13.91MiB in 00:11
[download] Destination: Hiatus Kaiyote - Breathing Underwater-9ZVMViSx6Ek.f141.m4a
[download] 100% of 10.53MiB in 00:08
[ffmpeg] Merging formats into "Hiatus Kaiyote - Breathing Underwater-9ZVMViSx6Ek.mkv"
WARNING: Your copy of avconv is outdated, update avconv to version 10-0 or newer if you encounter any errors.
ERROR: Could not write header for output file #0 (incorrect codec parameters ?): Operation not permitted

I have the latest stable mkvtoolnix (for mkv conversion, other packages required?):
Installed: 6.7.0-1
Candidate: 6.7.0-1

I have the latest stable libav-tools (package containing avconv):
Installed: 6:9.18-0ubuntu0.14.04.1
Candidate: 6:9.18-0ubuntu0.14.04.1

Originally created by @AdamDanischewski on GitHub (May 9, 2015). I am trying to download the following YouTube video: https://www.youtube.com/watch?v=9ZVMViSx6Ek $ youtube-dl --version 2015.05.04 It is stored in a mkv container yet it won't convert, here is the result: youtube-dl "https://www.youtube.com/watch?v=9ZVMViSx6Ek" --merge-output-format mkv [youtube] 9ZVMViSx6Ek: Downloading webpage [youtube] 9ZVMViSx6Ek: Extracting video information [youtube] 9ZVMViSx6Ek: Downloading DASH manifest [download] Destination: Hiatus Kaiyote - Breathing Underwater-9ZVMViSx6Ek.f248.webm [download] 100% of 13.91MiB in 00:11 [download] Destination: Hiatus Kaiyote - Breathing Underwater-9ZVMViSx6Ek.f141.m4a [download] 100% of 10.53MiB in 00:08 [ffmpeg] Merging formats into "Hiatus Kaiyote - Breathing Underwater-9ZVMViSx6Ek.mkv" WARNING: Your copy of avconv is outdated, update avconv to version 10-0 or newer if you encounter any errors. ERROR: Could not write header for output file #0 (incorrect codec parameters ?): Operation not permitted I have the latest stable mkvtoolnix (for mkv conversion, other packages required?): Installed: 6.7.0-1 Candidate: 6.7.0-1 I have the latest stable libav-tools (package containing avconv): Installed: 6:9.18-0ubuntu0.14.04.1 Candidate: 6:9.18-0ubuntu0.14.04.1

deekerman closed this issue

2026-02-21 02:15:33 -05:00

deekerman commented

2026-02-21 02:15:36 -05:00

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@dstftw commented on GitHub (May 9, 2015):

libav in ubuntu repos is outdated, you have to update it at least to 10 as stated in warning (latest ffmpeg will work as well). Alternatively, you can use -f best if you are ok with non overall best quality.

@dstftw commented on GitHub (May 9, 2015): libav in ubuntu repos is outdated, you have to update it at least to 10 as stated in warning (latest ffmpeg will work as well). Alternatively, you can use `-f best` if you are ok with non overall best quality.

deekerman commented

2026-02-21 02:15:36 -05:00

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@AdamDanischewski commented on GitHub (May 9, 2015):

Thanks that worked!!

(Guess, that was a good warning message! =)

youtube-dl -f best "https://www.youtube.com/watch?v=9ZVMViSx6Ek" --merge-output-format mkv
[youtube] 9ZVMViSx6Ek: Downloading webpage
[youtube] 9ZVMViSx6Ek: Extracting video information
[youtube] 9ZVMViSx6Ek: Downloading DASH manifest
[download] Destination: Hiatus Kaiyote - Breathing Underwater-9ZVMViSx6Ek.mp4
[download] 100% of 30.08MiB in 00:23

$ ls
Hiatus Kaiyote - Breathing Underwater-9ZVMViSx6Ek.mp4

@AdamDanischewski commented on GitHub (May 9, 2015): Thanks that worked!! (Guess, that _was_ a good warning message! =) youtube-dl -f best "https://www.youtube.com/watch?v=9ZVMViSx6Ek" --merge-output-format mkv [youtube] 9ZVMViSx6Ek: Downloading webpage [youtube] 9ZVMViSx6Ek: Extracting video information [youtube] 9ZVMViSx6Ek: Downloading DASH manifest [download] Destination: Hiatus Kaiyote - Breathing Underwater-9ZVMViSx6Ek.mp4 [download] 100% of 30.08MiB in 00:23 $ ls Hiatus Kaiyote - Breathing Underwater-9ZVMViSx6Ek.mp4

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