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Unnecessary Recoding When Merging Formats Into Incompatible Container #13106
Comments
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To be clear, I’m asking that the
This is often 150 times faster, and produces a file with better quality and smaller filesize. It would tremendously benefit a relatively large amount of people, and it shouldn’t require much work to implement for anyone who understands the relevant code. Please fix this behavior. |
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Post the full output of youtube-dl when run with Do not post screenshots of verbose log only plain text is acceptable. The output (including the first lines) contains important debugging information. Issues without the full output are often not reproducible and therefore do not get solved in short order, if ever. |
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@dstftw Was that a bot making that comment? I clearly did that when I opened the issue. |
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Your log is incomplete. Do not remove any output from it. I'm not going to fortune tell what command you are running and what's in your config. |
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Oh, sorry, I have no idea how the top got cut. I’ll run it again and edit the comment, my apologies. |
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@dstftw I’ve replaced the log in my original comment with a more complete one. Again, sorry about that. I’ve used |
## Please follow the guide below
xinto all the boxes [ ] relevant to your issue (like that [x])Make sure you are using the latest version: run
youtube-dl --versionand ensure your version is 2017.05.14. If it's not read this FAQ entry and update. Issues with outdated version will be rejected.Before submitting an issue make sure you have:
What is the purpose of your issue?
The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your issue
If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:
Add
-vflag to your command line you run youtube-dl with, copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):Description of your issue, suggested solution and other information
When recoding downloaded media to MP4 as directed by the
recode-video mp4argument, youtube-dl doesn’t specify to FFMPEG which file is incompatible with MP4 and therefore necessary to convert. As a result, FFMPEG recodes all of the files given as per the defaults, leading to a loss of quality and a massive amount of wasted CPU time.-c:v copyor-c:a copyshould be specified for any formats that are already supported by MP4. It shouldn’t be re-encoding H.264 video just because I downloaded Opus audio.This is a rather serious problem, as it has the potential to tie up a computer’s CPU for hours to no benefit, and can affect anyone using the
recode-videoargument.