* frame rate}. Use
* <code class=prettyprint>format.setString(MediaFormat.KEY_FRAME_RATE, null)</code>
* to clear any existing frame rate setting in the format.
+ * <p>
+ *
+ * The following table summarizes the format keys considered by this method.
+ *
+ * <table style="width: 0%">
+ * <thead>
+ * <tr>
+ * <th rowspan=3>OS Version(s)</th>
+ * <td colspan=3>{@code MediaFormat} keys considered for</th>
+ * </tr><tr>
+ * <th>Audio Codecs</th>
+ * <th>Video Codecs</th>
+ * <th>Encoders</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td>{@link android.os.Build.VERSION_CODES#LOLLIPOP}</th>
+ * <td rowspan=3>{@link MediaFormat#KEY_MIME}<sup>*</sup>,<br>
+ * {@link MediaFormat#KEY_SAMPLE_RATE},<br>
+ * {@link MediaFormat#KEY_CHANNEL_COUNT},</td>
+ * <td>{@link MediaFormat#KEY_MIME}<sup>*</sup>,<br>
+ * {@link CodecCapabilities#FEATURE_AdaptivePlayback}<sup>D</sup>,<br>
+ * {@link CodecCapabilities#FEATURE_SecurePlayback}<sup>D</sup>,<br>
+ * {@link CodecCapabilities#FEATURE_TunneledPlayback}<sup>D</sup>,<br>
+ * {@link MediaFormat#KEY_WIDTH},<br>
+ * {@link MediaFormat#KEY_HEIGHT},<br>
+ * <strong>no</strong> {@code KEY_FRAME_RATE}</td>
+ * <td rowspan=4>{@link MediaFormat#KEY_BITRATE_MODE},<br>
+ * {@link MediaFormat#KEY_PROFILE}
+ * (and/or {@link MediaFormat#KEY_AAC_PROFILE}<sup>~</sup>),<br>
+ * <!-- {link MediaFormat#KEY_QUALITY},<br> -->
+ * {@link MediaFormat#KEY_COMPLEXITY}
+ * (and/or {@link MediaFormat#KEY_FLAC_COMPRESSION_LEVEL}<sup>~</sup>)</td>
+ * </tr><tr>
+ * <td>{@link android.os.Build.VERSION_CODES#LOLLIPOP_MR1}</th>
+ * <td rowspan=2>as above, plus<br>
+ * {@link MediaFormat#KEY_FRAME_RATE}</td>
+ * </tr><tr>
+ * <td>{@link android.os.Build.VERSION_CODES#M}</th>
+ * </tr><tr>
+ * <td>{@link android.os.Build.VERSION_CODES#N}</th>
+ * <td>as above, plus<br>
+ * {@link MediaFormat#KEY_PROFILE},<br>
+ * <!-- {link MediaFormat#KEY_MAX_BIT_RATE},<br> -->
+ * {@link MediaFormat#KEY_BIT_RATE}</td>
+ * <td>as above, plus<br>
+ * {@link MediaFormat#KEY_PROFILE},<br>
+ * {@link MediaFormat#KEY_LEVEL}<sup>+</sup>,<br>
+ * <!-- {link MediaFormat#KEY_MAX_BIT_RATE},<br> -->
+ * {@link MediaFormat#KEY_BIT_RATE},<br>
+ * {@link CodecCapabilities#FEATURE_IntraRefresh}<sup>E</sup></td>
+ * </tr>
+ * <tr>
+ * <td colspan=4>
+ * <p class=note><strong>Notes:</strong><br>
+ * *: must be specified; otherwise, method returns {@code false}.<br>
+ * +: method does not verify that the format parameters are supported
+ * by the specified level.<br>
+ * D: decoders only<br>
+ * E: encoders only<br>
+ * ~: if both keys are provided values must match
+ * </td>
+ * </tr>
+ * </tbody>
+ * </table>
*
* @param format media format with optional feature directives.
* @throws IllegalArgumentException if format is not a valid media format.
/**
* Get the track format at the specified index.
+ *
* More detail on the representation can be found at {@link android.media.MediaCodec}
+ * <p>
+ * The following table summarizes support for format keys across android releases:
+ *
+ * <table style="width: 0%">
+ * <thead>
+ * <tr>
+ * <th rowspan=2>OS Version(s)</th>
+ * <td colspan=3>{@code MediaFormat} keys used for</th>
+ * </tr><tr>
+ * <th>All Tracks</th>
+ * <th>Audio Tracks</th>
+ * <th>Video Tracks</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td>{@link android.os.Build.VERSION_CODES#JELLY_BEAN}</td>
+ * <td rowspan=8>{@link MediaFormat#KEY_MIME},<br>
+ * {@link MediaFormat#KEY_DURATION},<br>
+ * {@link MediaFormat#KEY_MAX_INPUT_SIZE}</td>
+ * <td rowspan=5>{@link MediaFormat#KEY_SAMPLE_RATE},<br>
+ * {@link MediaFormat#KEY_CHANNEL_COUNT},<br>
+ * {@link MediaFormat#KEY_CHANNEL_MASK},<br>
+ * gapless playback information<sup>.mp3, .mp4</sup>,<br>
+ * {@link MediaFormat#KEY_IS_ADTS}<sup>AAC if streaming</sup>,<br>
+ * codec-specific data<sup>AAC, Vorbis</sup></td>
+ * <td rowspan=2>{@link MediaFormat#KEY_WIDTH},<br>
+ * {@link MediaFormat#KEY_HEIGHT},<br>
+ * codec-specific data<sup>AVC, MPEG4</sup></td>
+ * </tr><tr>
+ * <td>{@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}</td>
+ * </tr><tr>
+ * <td>{@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}</td>
+ * <td rowspan=3>as above, plus<br>
+ * Pixel aspect ratio information<sup>AVC, *</sup></td>
+ * </tr><tr>
+ * <td>{@link android.os.Build.VERSION_CODES#KITKAT}</td>
+ * </tr><tr>
+ * <td>{@link android.os.Build.VERSION_CODES#KITKAT_WATCH}</td>
+ * </tr><tr>
+ * <td>{@link android.os.Build.VERSION_CODES#LOLLIPOP}</td>
+ * <td rowspan=2>as above, plus<br>
+ * {@link MediaFormat#KEY_BIT_RATE}<sup>AAC</sup>,<br>
+ * codec-specific data<sup>Opus</sup></td>
+ * <td rowspan=2>as above, plus<br>
+ * {@link MediaFormat#KEY_ROTATION}<sup>.mp4</sup>,<br>
+ * {@link MediaFormat#KEY_BIT_RATE}<sup>MPEG4</sup>,<br>
+ * codec-specific data<sup>HEVC</sup></td>
+ * </tr><tr>
+ * <td>{@link android.os.Build.VERSION_CODES#LOLLIPOP_MR1}</td>
+ * </tr><tr>
+ * <td>{@link android.os.Build.VERSION_CODES#M}</td>
+ * <td>as above, plus<br>
+ * gapless playback information<sup>Opus</sup></td>
+ * <td>as above, plus<br>
+ * {@link MediaFormat#KEY_FRAME_RATE} (integer)</td>
+ * </tr><tr>
+ * <td>{@link android.os.Build.VERSION_CODES#N}</td>
+ * <td>as above, plus<br>
+ * {@link MediaFormat#KEY_TRACK_ID},<br>
+ * <!-- {link MediaFormat#KEY_MAX_BIT_RATE}<sup>#, .mp4</sup>,<br> -->
+ * {@link MediaFormat#KEY_BIT_RATE}<sup>#, .mp4</sup></td>
+ * <td>as above, plus<br>
+ * {@link MediaFormat#KEY_PCM_ENCODING},<br>
+ * {@link MediaFormat#KEY_PROFILE}<sup>AAC</sup></td>
+ * <td>as above, plus<br>
+ * {@link MediaFormat#KEY_HDR_STATIC_INFO}<sup>#, .webm</sup>,<br>
+ * {@link MediaFormat#KEY_COLOR_STANDARD}<sup>#</sup>,<br>
+ * {@link MediaFormat#KEY_COLOR_TRANSFER}<sup>#</sup>,<br>
+ * {@link MediaFormat#KEY_COLOR_RANGE}<sup>#</sup>,<br>
+ * {@link MediaFormat#KEY_PROFILE}<sup>MPEG2, H.263, MPEG4, AVC, HEVC, VP9</sup>,<br>
+ * {@link MediaFormat#KEY_LEVEL}<sup>H.263, MPEG4, AVC, HEVC, VP9</sup>,<br>
+ * codec-specific data<sup>VP9</sup></td>
+ * </tr>
+ * <tr>
+ * <td colspan=4>
+ * <p class=note><strong>Notes:</strong><br>
+ * #: container-specified value only.<br>
+ * .mp4, .webm…: for listed containers<br>
+ * MPEG4, AAC…: for listed codecs
+ * </td>
+ * </tr><tr>
+ * <td colspan=4>
+ * <p class=note>Note that that level information contained in the container many times
+ * does not match the level of the actual bitstream. You may want to clear the level using
+ * {@code MediaFormat.setString(KEY_LEVEL, null)} before using the track format to find a
+ * decoder that can play back a particular track.
+ * </td>
+ * </tr><tr>
+ * <td colspan=4>
+ * <p class=note><strong>*Pixel (sample) aspect ratio</strong> is returned in the following
+ * keys. The display width can be calculated for example as:
+ * <p align=center>
+ * display-width = display-height * crop-width / crop-height * sar-width / sar-height
+ * </td>
+ * </tr><tr>
+ * <th>Format Key</th><th>Value Type</th><th colspan=2>Description</th>
+ * </tr><tr>
+ * <td>{@code "sar-width"}</td><td>Integer</td><td colspan=2>Pixel aspect ratio width</td>
+ * </tr><tr>
+ * <td>{@code "sar-height"}</td><td>Integer</td><td colspan=2>Pixel aspect ratio height</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ *
*/
@NonNull
public MediaFormat getTrackFormat(int index) {