Silent mp4 files

[VanderHua]

Is the mp4 data downloaded through the script silent? I downloaded part of the training data through the provided script and found that the mp4 files were all silent. I confirmed that there was no problem with my device player.

[tsaishien-chen]

Hi @VanderHua, Thanks for bringing this into attention! I am working on the support of audio downloading. The code will be published tomorrow.

[VanderHua]

Great update! Thanks!

[kuno989]

Has this issue been resolved?

[tsaishien-chen]

Hi @kuno989, Yes, the current codebase will download the video with audio by default. You can change the config file here to download videos only if you want.

[kuno989]

Thanks @tsaishien-chen, I'll check it out!

[kuno989]

HI @tsaishien-chen . I used the latest update version to work on it, but I still found that all the videos didn't contain sound. Has anyone faced the same problem as me?

Below is the config.yaml I used.

subsampling: {}

reading:
    yt_args:
        download_size: 360
        download_audio: True
        yt_metadata_args:
            writesubtitles:  True
            subtitleslangs: ['en']
            writeautomaticsub: True
            get_info: True
    timeout: 60
    sampler: null

storage:
    number_sample_per_shard: 100
    oom_shard_count: 5
    captions_are_subtitles: False

distribution:
    processes_count: 32
    thread_count: 32
    subjob_size: 10000
    distributor: "pyspark"

[tsaishien-chen]

Hi @kuno989, Could you please check these line. +ba is the command option to download video with audio. Could you also check whether this option is activated during downloading?

[kuno989]

Thank you for your answer. Yes, I checked it, but there's no difference.

[tsaishien-chen]

@kuno989, could you print video_format_string during the downloading and see whether the string includes +ba?

[kuno989]

Yes, I checked that it went in normally. That's weird.

print("video_format_string", video_format_string)
video_format_string   wv*[height>=360][ext=mp4]+ba/w[height>=360][ext=mp4]+ba/bv/b[ext=mp4]+ba

[tsaishien-chen]

@kuno989, could you please try to also add +ba after bv? It could be a bug.

[kuno989]

The IP of the instance I'm using was blocked, so it took some time. I modified it as below, but the video still doesn't include sound.

video_format_string = (
            f"wv*[height>={self.video_size}][ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba+bv' if self.download_audio else ''}/"
            f"w[height>={self.video_size}][ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba+bv' if self.download_audio else ''}/"
            f"bv/b[ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba+bv' if self.download_audio else ''}"
        )

[tsaishien-chen]

No, please try:

    video_format_string = (
        f"wv*[height>={self.video_size}][ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba' if self.download_audio else ''}/"
        f"w[height>={self.video_size}][ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba' if self.download_audio else ''}/"
        f"bv[ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba' if self.download_audio else ''}/"
        f"b[ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba' if self.download_audio else ''}"
    )

[kuno989]

I've confirmed that it's working now! Maybe the code hasn't been updated or anything else. Thanks!

[VanderHua]

Audio is now available for download.