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How to convert fasterq File into fastq files ?

So I have two fasterq files such as :-

20900104398_S66_L001_R1_001.fasterq
20900104398_S66_L001_R2_001.fasterq

I want to convert them into fastq files so that I can start doing downstream analysis in my pipeline. I tried using fasterq-dump (as it was the only thing I found until now). But using that is giving me an error

2022-11-15T07:14:08 fasterq-dump.3.0.0 err: name not found while resolving query within virtual file system module - failed to resolve accession '/mnt/hdd/Data/20900104398_S66_L001_R1_001' - Cannot resolve accession ( 404 )
2022-11-15T07:14:08 fasterq-dump.3.0.0 err: extract_acc2( '/mnt/hdd/Data/20900104398_S66_L001_R1_001' ).VFSManagerExtractAccessionOrOID() -> RC(rcVFS,rcPath,rcConstructing,rcParam,rcIncorrect)
fasterq-dump quit with error code 3

Is there any other tool to convert them?

Thank you!

fastq fasterq

the error looks like more a filesystem problem than a software error

Okay. This is the first time I have encountered this type of filetype. So the error is also confusing.

Just to clarify, are you downloading data from NCBI, because it seems to me that this is data (based on file name) right from a local sequencer?

No, I didn't download the data from NCBI. The client gave it to me.

Then you don't have to run this tool. fasterq-dump is a tool to fetch published NGS data from NCBI. What did you expect would it do?

Does head 20900104398_S66_L001_R1_001.fasterq show binary characters like example here Tools for fasterq file? ?

What does the command file 20900104398_S66_L001_R1_001.fasterq show?

Yes the command head 20900104398_S66_L001_R1_001.fasterq is showing just like the link to attached.

And file 20900104398_S66_L001_R1_001.fasterq is showing 20900104398_S66_L001_R1_001.fasterq: Progressive Graphics image data,

We have two examples of files (one from other thread) in a previously unseen format. What kind of sequencer is this data from (file name seems to be in Illumina format)? I wonder if it is from a new batch of sequencers that were recently announced. If so it may need re-processing to generate sequence data.

1 answer

I know this is an old post, but this answer might help. Fasterq is a compressed file format by petagene. You can look it up here. Using petagene module to decompress should convert the fasterq file back to a fastq file

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