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26th August 2017, 00:44 | #1 | Link |
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Which file is better quality?
Hello all,
I used jdownloader and youtube-dlg to download a youtube video: https://www.youtube.com/watch?v=5HFIsez-nYo Here is the mediainfo for both programs. Can someone tell me which program retained the highest quality of the video and audio after conversion? Thanks for anyone's help in this! Youtube-dlg Code:
General Format : Matroska Format version : Version 4 / Version 2 File size : 513 MiB Duration : 13mn 3s Overall bit rate : 5 491 Kbps Writing application : Lavf57.71.100 Writing library : Lavf57.71.100 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.2 Format settings, CABAC : Yes Format settings, ReFrames : 2 frames Codec ID : V_MPEG4/ISO/AVC Duration : 13mn 3s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 59.940 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Default : Yes Forced : No Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.601 HANDLER_NAME : VideoHandler DURATION : 00:13:03.883000000 Audio ID : 2 Format : Opus Codec ID : A_OPUS Duration : 13mn 3s Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Bit depth : 32 bits Compression mode : Lossy Language : English Default : Yes Forced : No DURATION : 00:13:03.921000000 Code:
General Format : MPEG-4 Format profile : Base Media Codec ID : isom File size : 513 MiB Duration : 13mn 3s Overall bit rate : 5 493 Kbps Movie name : Hellblade PC vs PS4/Pro: Graphics Comparison 1080p60 Settings Tweak Guide! Performer : DigitalFoundry Recorded date : 2017 Writing application : Lavf55.49.100 Comment : https://www.youtube.com/watch?v=5HFIsez-nYo Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.2 Format settings, CABAC : Yes Format settings, ReFrames : 2 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 13mn 3s Bit rate : 5 351 Kbps Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Variable Frame rate : 59.940 fps Minimum frame rate : 59.920 fps Maximum frame rate : 59.960 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.043 Stream size : 500 MiB (97%) Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.601 Audio ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 13mn 3s Bit rate mode : Constant Bit rate : 126 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 44.1 KHz Compression mode : Lossy Stream size : 11.7 MiB (2%) |
26th August 2017, 20:46 | #2 | Link |
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It's same video stream , just two different containers (mkv versus mp4).
Containers (avi, mkv, mp4 etc) just combine video and audio tracks and subtitles and chapter information and metadata into single files, which video players can then decode and play. The video and audio streams should be identical in both files, as they're taken out of the containers. |
27th August 2017, 23:29 | #3 | Link | |
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Quote:
Also the audio encoding seems be different as well. Can you see which program uses higher quality settings? |
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28th August 2017, 00:02 | #4 | Link |
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They don't encode, only download. There is no indication that one is constant bitrate. Like mariush said they are identical.
Audio: one is AAC, the other Opus. Both offer very good quality at these bitrates. I doubt you would be able to hear any difference (I don't). |
29th August 2017, 15:40 | #5 | Link | |
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Under Video->Frame rate mode for youtube dlg it states constant. Under Video->Frame rate mode for jdownloader it states variable. Last edited by magus; 29th August 2017 at 15:43. |
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29th August 2017, 17:14 | #6 | Link |
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Frame rate isn't bitrate. The frame rate difference shown by MediaInfo is only some minor jitter. There is jitter in mkv as well, it's just that MediaInfo ignores it to some extent. The picture quality is 100% identical because the H.264 bitstream is identical. Just muxed in a different container.
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29th August 2017, 21:48 | #7 | Link | |
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Ok sounds good. Thanks. |
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