Repository: yt-dlp/yt-dlp
File: yt_dlp/extractor/cda.py (Python)

Code before:
                return
            if video['file'].startswith('uggc'):
                video['file'] = codecs.decode(video['file'], 'rot_13')
                if video['file'].endswith('adc.mp4'):
                    video['file'] = video['file'].replace('adc.mp4', '.mp4')
            elif not video['file'].startswith('http'):
                video['file'] = decrypt_file(video['file'])
            video_quality = video.get('quality')
            qualities = video.get('qualities', {})
            video_quality = next((k for k, v in qualities.items() if v == video_quality), video_quality)
            info_dict['formats'].append({
                'url': video['file'],
                'format_id': video_quality,
                'height': int_or_none(video_quality[:-1]),
            })
            for quality, cda_quality in qualities.items():
                if quality == video_quality:
                    continue
                data = {'jsonrpc': '2.0', 'method': 'videoGetLink',
                        'params': [video_id, cda_quality, video.get('ts'), video.get('hash2'), {}], 'id': 2}
                data = json.dumps(data).encode('utf-8')
                video_url = self._download_json('https://www.cda.pl/video/' + video_id, video_id,
                                                headers={'Content-Type': 'application/json',
                                                         'X-Requested-With': 'XMLHttpRequest'}, data=data,
                                                note=f'Fetching {quality} url',
                                                errnote=f'Failed to fetch {quality} url', fatal=False)
                if try_get(video_url, lambda x: x['result']['status']) == 'ok':
                    video_url = try_get(video_url, lambda x: x['result']['resp'])
                    info_dict['formats'].append({
                        'url': video_url,
                        'format_id': quality,
                        'height': int_or_none(quality[:-1])
                    })

            if not info_dict['duration']:
                info_dict['duration'] = parse_duration(video.get('duration'))

        extract_format(webpage, 'default')

        for href, resolution in re.findall(
                r'<a[^>]+data-quality="[^"]+"[^>]+href="([^"]+)"[^>]+class="quality-btn"[^>]*>([0-9]+p)',
                webpage):
            if need_confirm_age:
                handler = self._download_age_confirm_page
            else:
                handler = self._download_webpage

            webpage = handler(
                urljoin(self._BASE_URL, href), video_id,
                'Downloading %s version information' % resolution, fatal=False)
            if not webpage:

Review comment (bug):
```suggestion
                video_url = self._download_json(
                    f'https://www.cda.pl/video/{video_id}', video_id, headers={
                        'Content-Type': 'application/json',
                        'X-Requested-With': 'XMLHttpRequest'
                    }, data=data, note=f'Fetching {quality} url',
                    errnote=f'Failed to fetch {quality} url', fatal=False)
```

Code after:
                return
            if video['file'].startswith('uggc'):
                video['file'] = codecs.decode(video['file'], 'rot_13')
                if video['file'].endswith('adc.mp4'):
                    video['file'] = video['file'].replace('adc.mp4', '.mp4')
            elif not video['file'].startswith('http'):
                video['file'] = decrypt_file(video['file'])
            video_quality = video.get('quality')
            qualities = video.get('qualities', {})
            video_quality = next((k for k, v in qualities.items() if v == video_quality), video_quality)
            info_dict['formats'].append({
                'url': video['file'],
                'format_id': video_quality,
                'height': int_or_none(video_quality[:-1]),
            })
            for quality, cda_quality in qualities.items():
                if quality == video_quality:
                    continue
                data = {'jsonrpc': '2.0', 'method': 'videoGetLink', 'id': 2,
                        'params': [video_id, cda_quality, video.get('ts'), video.get('hash2'), {}]}
                data = json.dumps(data).encode('utf-8')
                video_url = self._download_json(
                    f'https://www.cda.pl/video/{video_id}', video_id, headers={
                        'Content-Type': 'application/json',
                        'X-Requested-With': 'XMLHttpRequest'
                    }, data=data, note=f'Fetching {quality} url',
                    errnote=f'Failed to fetch {quality} url', fatal=False)
                if try_get(video_url, lambda x: x['result']['status']) == 'ok':
                    video_url = try_get(video_url, lambda x: x['result']['resp'])
                    info_dict['formats'].append({
                        'url': video_url,
                        'format_id': quality,
                        'height': int_or_none(quality[:-1])
                    })

            if not info_dict['duration']:
                info_dict['duration'] = parse_duration(video.get('duration'))

        extract_format(webpage, 'default')

        for href, resolution in re.findall(
                r'<a[^>]+data-quality="[^"]+"[^>]+href="([^"]+)"[^>]+class="quality-btn"[^>]*>([0-9]+p)',
                webpage):
            if need_confirm_age:
                handler = self._download_age_confirm_page
            else:
                handler = self._download_webpage

            webpage = handler(
                urljoin(self._BASE_URL, href), video_id,
                'Downloading %s version information' % resolution, fatal=False)