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check sample rate and lower if too high

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Trent 2020-06-25 02:22:34 -07:00 committed by Lex Berezhny
parent 1e478e3545
commit 8c25f65024
1 changed files with 6 additions and 1 deletions
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7
lbry/file_analysis.py
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@ -195,10 +195,13 @@ class VideoFileAnalyzer:
if stream["codec_type"] != "audio":
continue
codec = stream["codec_name"]
sample_rate = stream['sample_rate']
log.debug(" Detected audio codec is %s", codec)
if not {"aac", "mp3", "flac", "vorbis", "opus"}.intersection(codec.split(",")):
return "Audio codec is not in the approved list of AAC, FLAC, MP3, Vorbis, and Opus. " \
f"Actual: {codec} [{stream['codec_long_name']}]"
if sample_rate > "48000":
return "Sample rate out of range"
return ""
@ -410,7 +413,7 @@ class VideoFileAnalyzer:
# the plan for transcoding:
# we have to re-encode the video if it is in a nonstandard format
# we also re-encode if we are h264 but not yuv420p (both errors caught in video_msg)
# we also re-encode if our bitrate is too high
# we also re-encode if our bitrate or sample rate is too high
try:
transcode_command = [f'-i "{file_path}" -y -c:s copy -c:d copy -c:v']
@ -433,6 +436,8 @@ class VideoFileAnalyzer:
if volume_msg:
volume_filter = await self._get_volume_filter()
transcode_command.append(volume_filter)
if audio_msg == "Sample rate out of range":
transcode_command.append(" -ar 48000 ")
else:
transcode_command.append("copy")